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Table of Content

    28 December 2013, Issue 6
    Integrated Management and Administration
    Considerations on Related Issues of Forest Resource Monitoring
    ZENG Weisheng, YAN Hongwei
    2013,(6):  15-18. 
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    Starting from the concept of forest resources monitoring,this paper expounds the position and composition of forest resources monitoring system and analyzes four relations between national monitoring and local monitoring,between technical system and administrative system,between inheritance and innovation,and between monitoring and evaluation/examination,which should be well handled for improving the current forest resources monitoring system.Finally,it suggests efforts on development of forest resources monitoring system in the near future.
    Research on the Market Coordination Relationship between Bamboo Forest Management Certification and Bamboo Forest Carbon Sequestration in China
    XIA Enlong, JIANG Zehui, LI Zhiyong
    2013,(6):  19-22. 
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    As a special type of forest,bamboo forest plays a very important and unique role in the development of climate change and sustainable development.From many aspects this paper analyzes the differences and relations between bamboo forest management certification and bamboo forest carbon sequestration. The result shows that both of them can be developed in a coordinated way.Finally the article gives a new developmental idea of bamboo forest management certification and bamboo forest carbon sequestration in China.
    Current Situation and Countermeasure of the Functions and Duties of the Rural Forest Rangers
    CHEN Ke
    2013,(6):  23-27. 
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    The managerial system is being executed by some local governments to protect ecological public welfare forest at present.The trend of the functions of the forest rangers being void and weak has already been exposed in the rural areas in recent years.The actual cause is that there is an imbalance between rangers’ duties and reward and lack of an effective control mechanism.To meet the demand of forestry development and strengthen ecological public welfare forest management,forms of self-management,contracted management and commission management should be adopted for market mechanisms in a long run.The responsibilities of the local government are to supervise the effects of forest management and protection and provide comprehansive services.
    Discussion on the Situation and Development of Township Forestry Stations in the New Period
    CHENG Xiaoling
    2013,(6):  28-32. 
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    In different periods of forestry development,township forestry stations have played different roles in functions and work emphases.This article shows that the township forestry stations are facing new opportunities in construction of ecological civilization,reform of collective forest right system,protection and management of forest resources,and fulfillment of public duties in the new period.And this article brings forward development priorities and relevant countermeasures for township forestry stations.
    Information Resource Development and Utilization in the Wisdom Forestry Times
    LIU Guangping, LIU Bo, TENG Yiyan
    2013,(6):  33-36. 
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    This paper has analyzed the problem of the information resource development and utilization,studied the meaning,goal and feasibility of the information resource development and utilization in the wisdom forestry period.Some reasonable suggestions about how to realize information resource development and utilization in the wisdom forestry period have been put forward so as to speed up the development of the forestry informatization.
    The Main Problems and Countermeasures of the Development of Private Forests in China
    DENG Libin
    2013,(6):  37-39. 
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    With the advancement of collective forest land reform,the private forest has become an important part of forestry in our country.This paper analyzes the main contradictions and problems in the development process of the private forest in our country at the present stage,and on this basis puts forward the countermeasures and suggestions of the private forest development so as to provide reference for the establishment of forestry policies in China.
    Study on Supervision and Management of Forest Ecological Projects
    XIONG Lian
    2013,(6):  40-42. 
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    After large-scale afforestation,the forest ecological projects have entered the management and maintaining stage.This article analyzes the current problems of the management and maintaining in forestry ecological projects in our country,and also discusses the main contents and procedures of the supervision of this stage.
    Research Advances of Health Assessment of Urban Forests
    ZHAO Yan, XU Zhengchun, WEN Xiujun, XU Songjun, HUANG Xiaorui, MA Dan
    2013,(6):  43-47. 
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    Urban forest health assessment is an important prerequisite for the development of urban forest health.Based on a brief overview of urban forests,urban forest health and urban forest health assessment,the paper summarized the research progress of urban forest health assessment,including choices of evaluation scale,determination of evaluation and assessment methods,classification of the evaluation results and so on.The problems of urban forest health assessment are raised,such as the unclear concepts,imperfect evaluation,immature evaluation methods and insufficient research.And then the paper proposes the future trend of the current research.
    Discussion on Forest Ecological Benefit Compensation in Guangdong Province
    XU Xiuyu, ZENG Feng
    2013,(6):  48-52. 
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    Present situation and problems of compensation for ecological benefits of non-commercial forests in Guangdong Province are analyzed in terms of legislation,area,compensation capital investment and benefits.Some suggestions of compensation of non-commercial forests for Guangdong Province were put forward,including speeding up the legislative process,enlarging the area of non-commercial forests,establishing incentive compensation mechanism,and other support and control measures and so on.
    Discussion on Problems and Strategies of the Eco-compensation Mechanism of Coastal Shelterbelt in Hebei Province
    HE Xin, ZHAO Zhongbao, QI Lu
    2013,(6):  53-56. 
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    The paper introduces some basic facts about coastal protection forests in Hebei Province and analyzes the problems of eco-compensation of coastal shelter forests,such as low compensation standards,lack of a supervision mechanism,single subject and standard.To deal with the problems,the paper presents a detailed analysis and puts forward measures and strategies,hoping to provide ideas and reference for the construction and healthy development of eco-compensation.
    Yuxiushan National Forest Park Construction and Forest Eco-tourism Development Countermeasures
    TANG Hong, WANG Zhiying
    2013,(6):  57-61. 
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    This paper introduces the basic situation of Yuxiushan National Forest Park and discusses the forest park construction and forest ecological tourism development,the protection and development,scenic area planning and layout,improvement of the quality of forest,forest landscape,rich cultural connotation,standards of project construction,establisbment of tourism facilities and forest ecological tourism development countermeasures.
    Scientific Research
    The National Wetland Inventory Technique System Design and Result Analysis
    TANG Xiaoping, WANG Zhichen, ZHANG Yangwu, ZHOU Tianyuan
    2013,(6):  62-69. 
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    In order to meet the needs of national wetland conservation and management,the Chinese government launched the second National Wetland Inventory (NWI) in 2009 and completed it in 2012. The second NWI was in accordance with the wetland classification of the Ramsar Convention and the minimum inventory area was more than 8 hm2. The inventory method combined “3S” technologies and field investigations,and the inventory contents included wetland wildlife,wetland hydrology and water quality,ecological environment,conservation and management status,threats in all the important wetlands. This article describes the technical features and management system in the second NWI,shows some of the inventory results and analyses the dynamic changes of the wetland resources and ecological status during the first and second NWIs.
    Volume Growth Models for Korean Pine Plantations in the Changbai Mountain Region of Northeast China
    SUN Shiren, SU Dongkai, XIE Xiaokui, YANG Ming, ZHAO Yue, TANG Yu, LI Bin
    2013,(6):  70-75. 
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    Twelve growth models with 3 parameters were used to simulate the volume of Korean pine plantations in the Changbai Mountain region of Northeast China.Data for model construction was based on forest resource planning and design inventory of 1078 subcompartments in Jilin Province.The functions with the highest correlation coefficient (R2)and lowest root mean square error (RMSE)were used to compare the different models,enabling biological significance to be assessed via extrapolation.Results revealed a pattern of “slow-strong-slow” growth for Korean pine.Models developed by Richards and Gompertz proved to be superior to others in simulating the Korean pine growth with higher accuracy and better biological significance,yielding growth curves displaying a typical “S” shape characteristics of slow-growing tree species.Annual increment model was got by derivation on volume growth model and it showed that the annual increment of Korean pine plantations reached the maximum near the age of 29a.The effectiveness of volume growth models at depicting the growth process of Korean pine plantations suggest their utility for predicting forest growth as an aid to optimal forest management in Changbai Mountain region.
    Biomass and Increment of Pinus elliottii Plantation in High Altitude Area of Northern Fujian
    YE Gongfu, GAO Wei, ZHENG Zhaofei, ZHANG Mingyou, ZHU Xiangjin, XU Qingzhong, CAO Qingyu, ZHANG Yuanfa
    2013,(6):  76-80. 
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    The biomass and increment of Pinus elliottii plantation in high altitude area of northern Fujian were studied using method of stem analysis.The results showed that the biomass order of Pinus elliottii organs was stem>branch>root>leaf>fruit,and the distribution of moisture was root>stem>leaf>branch,the average moisture content of single plant was 56.19%.The total biomass of 33-year-old Pinus elliottii plantation was 396 735kg·hm-2,and its net productivity was 12 022.27 kg·hm-2·a-1.The height,DBH and the volume of single plant have reached 21m、24.6cm and 0.3805m3.There was 3 pinnacle in DBH growth and 4 pinnacle in height growth,the high growth rate and low growth rate of DBH are consistent with the year of height growth.The annual growth curve of height intersected with the average growth curve multiple times and changed drastically,the volume changed relatively and it did not reach the age of quantitative maturity.The total increment models of height,DBH and volume of Pinus elliottii was established through SPSS 13.0 with high accuracy.
    Research on the Accuracy of Polygon Sample Plots
    GUO Zhiwen, YUE Depeng, CAO Rui, YANG Sihan
    2013,(6):  81-85. 
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    In this paper we selected 20 Chinese pine standard sample plots and,according to the principle of the polygon sample plot layout,set up 100 polygon sample plots.The measuring factors include the average height,DBH,mean density and forest stock volumes.comparing with the data of standard plots we can get the accuracy of the polygon plots.The results show that the accuracy of polygon plot method in artificial forests is higher than that in natural forests.The accuracy of forest stock volume can reach 92.8% in artificial forests and 89.2% in natural forests.
    Abandoned Quarry Vegetation Restoration and Construction of Plant Landscape in Beijing
    DAI Na
    2013,(6):  86-91. 
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    Combined with the Beijing quarry restoration project,research work was conducted on the restoration concept and principle of the vegetation restoration,plant species selection,plant landscape space construction,color matching,spatial and temporal sequence with an aim to provide reference for the abandoned quarry vegetation restoration and landscape construction in Beijing.
    Comparative Analysis on Spatial Structures of Different Rhizophora stylosa Communities in Techeng Island
    HUANG Jianjian, LI Jiping, LIU Suqing, HAN Weidong, ZENG Qunying
    2013,(6):  92-95. 
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    We take different Rhizophora stylosa communities as the object of study in Techeng Island,and use the mingling,health index,neighborhood comparison,competition index,neighborhood pattern and spatial density index to analyze and compare the spatial structures of different Rhizophora stylosa communities.The results show that the second community is a highly mixed,the first community and the third one belongs to moderately mixed forest,the forth community is pure forest; the DBH neighborhood comparison of the forth community is the least.The tree height neighborhood comparison of the first community is the least.All the communities are greater than 0.517 in the stand spatial distribution pattern,which is slug distribution.Rhizophora stylosa and Bruguiera gymnorrhiza mixed community health is better than pure mangrove community.Pure Rhizophora stylosa community competition index minimum is in a dominant position.The three community average spatial density index is smaller than other communities and growth is better.
    Effects of Different Stand Improvement Measures on Community Stability of Larix principis-rupprechtii Plantation
    ZHANG Shuzi, LI Mei, ZHANG Zhidong, CUI Lihong, HUANG Xuanrui, WANG Dongzhi
    2013,(6):  96-101. 
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    Based on the subordinate function values calculated by fuzzy comprehensive evaluation,13 indices were selected,and community stability of Larix principis-rupprechtii plantations and the efficiency of different management measures were evaluated in north mountains of Hebei Province.The results showed that forest community stability presented the order of artificial promoting regeneration>strip clear-cutting>gap selective logging>close grazing>unclosed area.Each selected index is significantly different between managed and unmanaged forests.
    Dynamic Analysis on Provincial-scale Forest Ecosystem Diversity —A Case Study in Hunan Province
    LI Mingyang, YU Chao, SHI Yu, YANG Yufeng
    2013,(6):  102-107. 
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    Spatial hotspot detection,dynamic analysis of forest ecosystem types,trend surface analysis and geographical weighted regression analysis were applied to analyze the change of forest ecosystem diversity from 2005 to 2009 in Hunan Province.Study results show that:1)the counties with a large number of disappeared forest ecosystem types (cold spots)were mainly distributed in the northwest of the study area,while the counties with a large number of emerging ecosystem types (hotspots)were concentrated in the eastern part of the province; 2)the disappeared forest ecosystem types in Hunan Province from 2005 to 2009 were deciduous broadleaved forest,shrub,grassland,bare land,while the emerging types were mixed broadleaved and needle-leaved forest and mosaic grassland and forest; 3)the spatial pattern of the number of disappeared forest ecosystem types showed a sloping trend from north to south,while the pattern for emerging types showed a sloping trend from west to east; 4)the change number of ecosystem types was negatively correlated with the average altitude and poverty rate,positively correlated with population density.
    Ecotourism Resources Evaluation Model Development and Case Study —Take 36 ecotourism areas in Jiangsu Province as an example
    SHEN Suyan, GUO Jianying, YIN Lijie
    2013,(6):  108-113. 
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    Traditional tourism resources evaluation model overemphasizes the value of tourism resources themselves.It has been unable to meet the needs of ecotourism resources evaluation,which should pay more attention to ecological environment.Based on the literature review,an ecotourism resources evaluation model is proposed.The model includes four factors,i.e.,the value of ecotourism resources,regional conditions,development potentials and ecological environmental health.Using a combination weighting method,which combines entropy and AHP method,empirical research is made by collecting data from related experts on evaluating 36 major ecotourism areas in Jiangsu Province.Furthurmore,cluster analysis is used to classify these 36 case areas.The result confirms the operability of the evaluation model proposed in the paper and the guiding value for developing ecotourism.
    Study on Biodiversity in Natural Secondary Poplar-birch Forests of Different Ages in Mengluan Forest Farm
    CUI Lihong, ZHANG Shuzi, HUANG Xuanrui
    2013,(6):  114-120. 
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    This article takes natural secondary poplar-birch forests in Mengluan Forest Farm of Mulan Forestry administration as the research object.Species composition of forests of different ages(9 years,18 years and 28 years)and different layers(tree layer,shrub layer and grass layer) were investigated,biodiversity indexes were calculated with Excel and Forstat,and differences between different indexes were analyzed with SPSS17.0.The results show that there are 155 species,belonging to 50 families and 104 categories,and the number of species of 18-years-old forest is the largest,which is 120.Betula platyphylla,Populus davidiana Dode and Betula dahurica are dominant species of tree layer,Corylus mandshurica is dominant species of shrub layer,Phlomis umbrosa and Carex ussuriensis are dominant species of grass layer; Shannon-Wiener index,Simpson index and evenness index of tree layer all show that 9 year<28year<18year; indexes of shrub layer show that 18 year<9 year<28year; indexes of grass layer show that 28 year<9 year<18 year,moreover,they are all greater than indexes of tree layer and shrub layer.
    Assessment on Sediment Environmental Quality of Mangrove Forest in Qinglan Harbour,Hainan Province
    GUO Julan, ZHU Yaojun, WU Gaojie, GUO Zhihua
    2013,(6):  121-126. 
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    Using the potential ecological risk index,the heavy metal pollution of mangrove sediment in nearly 20 years is evaluated.The result shows that average content of single heavy metal is sequenced as Cr>Zn>Pb>As>Cu.The total content of heavy metal is sequenced as Wxiapo village >Wbaitouwei village >Wguanyuan>Wdanchang village >Wgangdong village >Wxiachang village. The average value of plots is sequenced as As>Pb>Cr >Cu>Zn.The RI value is sequenced as Xiapo village>Baitouwei village>Guanyuan>Danchang village>Gangdong village>Xiachang village.The ecological hazards of each site are slight.The average content of heavy metal and ecological risk of Xiapo village and Baitouwei village is significantly higher than the other four plots.The main ecological risk of heavy metal pollutant is As,followed by Pb.
    Analysis on Spatial Distribution Pattern of Diameter-class Structure for Natural Picea crassifolia Forest Stand in Qilian Mountains
    WANG Mei, DA Guangwen, WANG Yingcheng, XU Kaisheng, ZHU Jinyu, ZHOU Guangjun, LI Jianghai
    2013,(6):  127-132. 
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    Analysis has been made on the distribution of diameter class structure of trees in 24 permanent sample plots of Picea crassifolia at the eastern section of Qilian Mountains.The followings are the results we have concluded.The small diameter trees (6~12cm) of natural Picea crassifolia forest Stand in Qilian Mountains occupy a big proportion,but the large diameter trees (26~36cm)and the larger diameter trees(≥38cm)occupy a small proportion.The distribution of diameter class structure of trees shows irregular shape in sample plots with low altitude or density.With the increase of altitude and density,the proportion of the small diameter trees in general is gradually increasing,the proportion of the large diameter trees and the larger diameter trees decreases gradually.Forest tree diameter class structure shows a reverse J-type distribution.Using a linear function fitting on tree diameter class distribution,it has been showed that the cubic function well fits the forest tree diameter class structure and the curve is the J-type.The correlation coefficients between tree average DBH and density is-0.513,which has showed significant negative correlation and the correlation coefficient between average DBH and altitude is 0.018,the correlation is not obvious.
    The Re-distribution Pattern of Pinusdensata Forest Precipitation in Tibet Sejila Mountains
    Wujin Danzeng, ZHENG Weilie, ZHANG Kunlin, LU Jie
    2013,(6):  133-136. 
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    The relationship between Pinusdensata interception loss,P.densata canopy interception,stem flow and atmospheric rainfall in Tibet Sejila Mountains were studied.The result shows that during the observation period,the total precipitation reached 337.90mm,among which,the canopy interception was 82.17mm with retention rate as 24.32% and amplitude of variation 13.19%~68.72%.Through fall precipitation was 215.76mm with penetration rate at 63.85% and change in the range of 1.67%~13.57% and stem flow was 39.97mm with stem flow rate at 11.83% and change range being 29.70%~73.26%.The fitted functions which represents the relationship between canopy interception,through fall,stem flow and rainfall were a power function,a linear function and second order function,respectively.The occurrence of canopy interception and precipitation was synchronous while that of penetration and stem flow not.The through fall and stem flow won’t appear until precipitation reaches certain level,starting with small amount and increasing gradually.
    Comparative Analysis on Soil Nutrients of Six Types of Natural Forest Stands in North Mountains of Hebei
    HUANG Qiuxian, ZHANG Jianhua, YANG Xinbing, ZHAO Xinmiao
    2013,(6):  137-143. 
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    This article aims at studying spatial distribution of soil nutrients,variability and nutrient correlation of six different forest types. The forest types include Black birch (Betula dahurica),birch (Betula platyphylla),Shanyang (Populus)tabulaeformis (Pinus),Mongolian oak (Quercus)and Acer mono (A.elegantulum).The result shows:1)The pH value of soil ranged from 5.04 to 6.47;the content of organic matter,available K,total N,alkaline hydrolysis N,total P is lowest in the tabulaeformis,while the content of available P is the lowest in Mongolian oak.In addition,the content has a decreasing trend with the increasing soil depth on the whole.2)The coefficient of variation of the pH value of the soil surface is 0.107,and the coefficient of variation of the other sectional level is less than 0.1,belonging to weak variability.The largest coefficient of variation soil ranged from 40 cm to 60cm in the indicators of soil nutrients.And the largest coefficient of variation of the available P belongs to strong variability.Other nutrient content layers present moderate variability.3)The pH,organic matter,total N,available N and available P between of them have a highly significant positive correlation.The available N,available P and total P also have a highly significant positive correlation .The pH value has a significant positive correlation with organic matter and available N.The total P has a significant positive correlation with organic matter and available K.The relation between available P,organic matter,total N,available N available K is obvious.
    Initial Study on Combustibility of New Leaves of 11 Garden Woody Species in Kunming
    ZHANG Yuyao, ZHOU Jinfeng, LI Luliang, LI Shiyou, WANG Qiuhua
    2013,(6):  144-147. 
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    To understand the new leaves combustibility of different garden woody species,combustion experiments of 11 woody species new leaves and 2 comparison trees old leaves were conducted during the peak fire season.The combustion experiments measured such factors as moisture content,mass area ratio,burning linear rates,burning area rates,burning mass loss rates,vein damage degree,area damage degree,mass damage degree,etc.The results showed that the burning rates and damage degree of Osmanthus fragrans,Chimonanthus praecox,Acer davidii,Liriodendron chinensis were stronger than the others,the difference of the remaining 7 kinds of plants burning rates and damage degree were not significant.The burning rates and damage degree of Exbucklandia populnea and Camptotheca acuminate were the lowest,the burning rates and damage degree of Osmanthus fragrans old leaves and Chimonanthus praecox old leaves were stronger than their new leaves.
    Selection of Elite Poplar Varieties for Forestation with Stump Grafting
    SONG Jiqin
    2013,(6):  148-153. 
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    With Populus Simonii as root stock,we set up three testing grounds for three comparison tests in Beijing Daxing district.This paper chose seven different poplar varieties including Populus×euramericanacv.Neva,Populus×euramericanacv.Guariento,Populus×euramericanacv.Bellotto,Populus×canadensis Moenchcv.Sacrau 79,P.del.CL.Xinshiji-1,Populus×euramericana cl.Zhonglin 2001 and Populusnigracl.Shiji for stump grafting.The results showed that:1)P.del.CL.Xinshiji-1was the lowest rate of survival and preservation,while the remaining six varieties of scion survival and preservation rates were 80% and 90%.2)Neva,Guarientoand Bellotto were grafted in testing ground 1,the average diameter at breast height,tree height and individual volume of them were larger,and there were no significant differences in data among them;Neva and Sacrau 79 were grafted in intesting ground 2.Compared to P.del.CL.Xinshiji-1,there were no significant data of differences in average diameter at breast height,and tree height.The differences of Neva and Sacrau 79 were not significant in average diameter at breast height,tree height,and individual volume Neva was grafted in testing ground 3.Compared with Zhonglin 2001 and Populusnigra cl.Shiji,the average diameter at breast height,tree height and individual volume were significant,but there was no obvious difference between Zhonglin 2001 and Populusnigra cl.Shiji.3)Comprehensive analysis shows that Neva,Guariento,Bellotto and Sacrau 79 are fine varieties for planting with poplar stump grafting.
    The Clone Selection of High Taxane Content of Taxus wallichiana var.wallichiana
    WANG Lei, ZHANG Jinfeng, YANG Dejun, LI Yongpeng, GENG Yunfen, WANG Daming, MA Saiyu, CAO Jianxin
    2013,(6):  154-156. 
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    There were three superior clones of Taxus wallichiana var.wallichiana were obtained by comparing the taxane contents of clones from the clonic nursery,which was based on the superior trees selection in the natural areas and the plantations of the species.It was believed that the extension of excellent clones of Taxus wallichiana var.wallichiana will be conducive to the conservation of natural resources.
    Technical Application
    Lessons for China from America Combating Dust Storms
    TU Zhifang
    2013,(6):  157-161. 
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    This essay introduces the status of dust storms in the Great Plains of America in 1930s and their damage to the country and analyzes the causes of the dust storms,the measures and policies on combating dust storms carried out by the US government.Finally,this essay gives some suggestions to China to combat desertification.
    Research on Forest Resources Co-management Application System Construction
    LIU Yongjie
    2013,(6):  162-167. 
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    This paper mainly makes a study on development of the forest resource co-management application system,which achieves the coordination among business applications through all kinds of business information standardization and integrated management of forest resources.The application system achieved basic data for forest resources and unified organization,updating and management of business thematic data on forest resources .And,for forest resources,it can effectively supervise the growth and decline of forest resources through achieving the management coordination of the different departments and different levels.
    Xinjiang Forest Pest Management Information System Based on MapObjects
    ZHANG Yuan, ZHENG Jianghua, LIU Ping, CHEN Meng, LIU Zhongjun, SHENG Zhaohu, SU Yanle
    2013,(6):  168-173. 
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    The paper introduces a thematic GIS-based information application.COM technology was adopted to develop a desktop application by integrating Visual Basic 2008,ACCESS and ESRI MapObjects.The system has the abilities including map control,data query,data statistics and thematic map and some other functions for decision support of Xinjiang forest pest management.
    Research on Development of the GIS-based Forest Pests and Diseases Monitoring System
    LIAO Zhenfeng, PAN Jie, ZHANG Heng
    2013,(6):  174-179. 
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    The forest diseases and pests monitoring system based on GIS technology can timely and effectively detect the occurrence and progress of forest pests and diseases,and greatly reduce the loss caused by pests and diseases.This paper firstly reviews the current development modes based on GIS technology for diseases and pests monitoring and forecasting system.Then,the research status of existing monitoring systems and applications of the ES,DSS,desktop-GIS and WebGIS technologies to the system development was presented.Finally it gives the prospects for development and research of the pest and disease monitoring system.
    Introduction and Prospects of the “Forest Watcher” Forest Fire Monitoring and Early Warning System
    SONG Yuwen
    2013,(6):  180-183. 
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    This article introduces the functions and application of the“Forest Watcher” Forest Fire Monitoring and Early Warning System in Songjianghe Forestry Bureau and prospects for the application of the system.
    Investigation on Fresh Weight of Bamboo at Different Developmental Stages and Economic Benefit Analysis
    GAO Xiaomei, HE Huiqin
    2013,(6):  184-190. 
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    Based on the five point method,four species of bamboo which are widely distributed in Yibin named Bambusa rigida,Bambusa pervariabilis,Neosinocalamus affinis and Bambusa intermedia were investigated.According to the fresh weight,total fresh weight and economic benefit analysis,the conclusions were drawn as follows:1)The mean total fresh weight of the four species of bamboo was presented as:Neosinocalamus affinis>Bambusa pervariabilis>Bambusa intermedia>Bambusa rigida.When the fresh weight of different stages annual,biennial and perennial one were compared,the annual bamboo fresh weigh was at the highest while the perennial was the lowest.2)The total fresh weight and the different stage fresh weight showed highly correlation where the total fresh weight and the biennial weight of Bambusa intermedia presented the significant correlation with the correlation coefficient 0.943.3)The economic benefit result showed that the Neosinocalamus affinis was the best,and the Bambusa pervariabilis was not economical.The other two species of bamboo were at almost the same condition.Further analysis showed that the economic benefit ratio of the annual Bambusa pervariabilis was as high as 44.58%,and the perennial stage accounted for the smallest proportion 22.78%.