Table of Content

28 October 2011, Issue 5

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Management and Administration

Study and Application of Initial Involvement for Feasibility Report Compilation on Forest Land Requisition and Occupation

WANG Hongbo, WANG Jibin, CHEN Zhe, LI Caiwen, RAO Riguang

2011,(5):  1-5. 

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The problem faced by the forest land requisition and occupation of the key construction projects is how to prepare the scientific and effective feasibility reports.In this paper,we choose the construction project of Chengdu-Chongqing high-speed railway as the study area and provide the theory,method and skills of initial involvement in the compilation of feasibility report.The results indicate that the methods of initial involvement in the preparation of feasibility report for key construction project are feasible.Its application will save and use the forest land rationally and promote forest land modernization management and sustainable development.

Some Ideas on Sampling Method for Forest Resources Inventory in Plain Regions

ZENG Weisheng, HUANG Guosheng, CHEN Xinyun

2011,(5):  6-8. 

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It has become widely concerned whether or not forest resources inventory results in plain regions can reflect the achievements of afforestation.Firstly,the distribution features of forest resources in plain regions were analyzed in this paper.Then,the main problems existing in current sampling method were elaborated.Finally,some suggestions were presented to improve the sampling method for forest resources inventory in plain regions.

The Strategic Choice of Economy Change of Forestry Resource City——Taking Yichun for an Example

LI Erbin, BAI Xiaodong, SUN Yanhua

2011,(5):  9-14. 

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Taking Yichun for an example and aiming at the development of the economy change of forestry resources city and the problems of the economy change of forestry resources city,the model of the economy change of forestry resources city was raised. The development of forest carbon sequestration is taken as the core of developing substitute industry. The industry extension mode is taken as the core of developing circular economy.Forestry tourism in developed into the core of comprehansive industry,timber deep-processing industry will take a lead in giving full play to industry advantage and exploitation of mineral resources will be used as the core for tapping the potential of industry advantages.

Study on Practical Assessment Issues in Forest Right Transfer

GAO Qinghao, ZENG Huafeng

2011,(5):  15-19. 

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With the deepening of the reform of collective forest right system,the farmers’ concept of market economy has improved,the amount of forest right transactions significantly has increased and forest right assessment has been paid more attention.On the basis of the basic analysis of the forest right transformation and forest right assessment,the importance of evaluation of forest right transfer has been elaborated,and some problems in the forest transfer assessment process were pointed out.Then new ways are put forward to address these issues and the key points to address these issues after the reform of collective forest right system.

Model of Forest Right Mortgage Loan and Its Innovation in Sichuan Province—Based on the Investigation of Three Pilot Counties

PU Yuecheng, WANG Lei, BAI Xue, SU Ting, LUO Xiao, JIANG Yuansheng

2011,(5):  20-24. 

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Forest Right Mortgage Loan is a double innovation of both Rural Property Right Reform and rural credit.It liquidizes the forest resources as well as provides necessary funds for forestry development.Questionnaire surveys have been conducted and several local governmental officials and bank managers interviewed in three counties which pilot in the Collective Forest Right System Reform in Sichuan Province.It is concluded that the development of Forest Right Mortgage Loan in Sichuan is still at a low level,partly because of the failure of the diversification of its model.On the basis of analyzing the existing models of the forest right mortgage loan in Sichuan,as well as drawing lessons from the experiences of other provinces,this paper proposes two innovative models:“forestation base+company+group lending+collective forest insurance” and “wholesale loan+CDM”.

Conflicts and Coordination in Forest Management Planning Based on Public Participation

WANG Lili, LI Weizhong

2011,(5):  25-29. 

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The conflicts in forest management plan have been analyzed. The result indicates that there has been less or no public participation in forest management plan.The communication between stakeholders is not enough according to the analysis of the reasons of conflicts.This paper proposes the public participation procedures based on forest management plan and indicates that the public participation can coordinate the conflicts and improve the quality and feasibility of management plan.

Study on the Protection and Development of Ecological Barrier in Guangxi Beibu Gulf

QIN Jiake, FU Rucan, NONG Shengqi, ZHENG Yongkui, YU Maoyuan, MA Yilin, WEN Juan

2011,(5):  30-35. 

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The construction of ecological barrier is significant measures to maintain ecological security for Beibu Gulf.This paper analyzed the existing problems and offered the proposal to construct the nature barrier of Beibu Gulf.The concrete proposal included the protection of natural ecosystem and area of habitat degradation, water conservation region,water and soil conservation region and windbreak and sand fixation area. By constructing the multi-level ecological security barrier,the ecological functions of the ecosystem was enhanced.It is important to maintain the ecological security of Guangxi Beibu Gulf.

Science and Technology

Analysis of Impacts of Slope Positions on Soil Carbon Storage in Prescribed Burning of Pinus Kesiya

GAO Zhongliang, ZHOU Ruliang, LI Zhi, LONG Tengteng, CUI Fei, TONG Yanmin

2011,(5):  36-40. 

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Comparison was done on three slopes of conventional and prescribed burning forest of humus layer thickness,load and organic carbon storage of upper,middle and bottom slope,and 0~60cm levels soil organic carbon content and storage. This paper elaborated the impacts of slope positions on soil organic carbon storage in prescribed burning of Pinus Kesiya.The experimental data showed that after prescribed burning,humus layer,load and organic carbon storage of three slope increased obviously (P<0.05),which increased 0.55cm,2.317t/hm² and 1.479t/hm². 0~60cm level soil average organic carbon content and storage in the same slope position increased highly and significantly (P<0.01). The increase amplitude was bottom slope> middle slope> upper slope with increase rate being 0.581,0.505,0.482,and 44.218,41.696,32.492t/hm².The experimental data showed that prescribed burning can increase forest soil organic carbon storage,selected bottom and middle slope prescribed burning can obtain better efficiency of carbon sequestration.

Analysis of Variation Characteristics of Soil Organic Carbon Content along the Qinghai-Tibet Railway

LI Xiaoming, CUI Ming, ZHOU Jinxing, FANG Jianmei

2011,(5):  41-46. 

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Soil organic carbon is the main part of terrestrial carbon reservior.The dynamic change of soil organic carbon storage of the Tibetan Plateau,as one of the most sensitive areas in the world,plays an essential role in the study of global change.The paper reports a research that attempts to analyze the variation characteristics of soil organic carbon content along the Qinghai-Tibet railway between Ge’ermu and Damxung.Data from 177 soil profiles of 20 transects,through field investigation and laboratory analysis,were collected,including altitude,vegetation coverage,soil organic carbon content,soil pH values,soil texture,and soil temperature.And the variance and stepwise regression analysis were employed to analyze the relationship of soil organic carbon content with soil depth,soil pH values,altitude,soil texture,soil temperature and vegetation coverage.The results indicated that soil organic carbon content along the Qinghai-Tibet Railway was primarily affected by the soil pH value and vegetation coverage.This study also provides data to support the further analysis of soil organic carbon dynamic change along the Qinghai-Tibet Railway and the impact of its running on the environment alongside.

The Density Structure of Dominant Species in Plant Community of Riparian Zones and Its Adjacent Uplands of Wenyuhe Watershed Upstream

ZHANG Dongxu, GUO Jinping, GUO Yuedong

2011,(5):  47-52. 

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The population index of dominant species,such as number,density,age structure and distribution pattern, was conducive to evaluating the strength of community interference,determining the trend of community succession.In this paper,we systematic ouy studied the composition and density structure of dominant species of the three reaches and its six different habitat conditions of the Upstream of Wenyuhe Watershed. The results showed that:(1) the vegetation of Picea wilsonii forest reach was in the succession stages of climax community or near climax community,had minimal human disturbance,and had been in a typical zonal vegetation types;(2) If human disturbance could be avoided or reduced in Betula platyphylla reach,the riparian forests would develop to Picea meyeri forest and upland forests would stayed in the mixed coniferous stage in a very long time;(3) the riparian vegetation of farmland reach had quit basically out of natural succession,the Lair principis-rupprechtii upland forests would remain a steady-state in a long period.The paper also raised some vegetation management measures for every reach in Wenyuhe Watershed Upstream.

Application Research of Data Mining of Spatial Knowledge of Forest Biomass——A Case Study in Xixia of Henan Province

LI Mingyang, ZHANG Xiangyang, WU Wenhao, LIU Fang

2011,(5):  53-59. 

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Xixia,a key forest county in Henan province,was selected as the case study area,while spatial dataset of forest resources continuous inventory in 2003 was collected as the main information sources of data mining.Spatial hot explore,trend analysis,geographically weighted regression (GWR) and C5.0 decision tree analysis were performed on the platform of ArcGIS 9.3 and Clemintine 12.0 to mining spatial knowledge of forest biomass in Xixia county.Research shows that:(1) the spatial distribution of forest biomass is closely related with gradient of elevation,showing a tilting ladder pattern from north to south;(2) forest biomass is positively correlated with average tree height and slope,negatively with soil thickness and light brightness value;(3) the importance of the four major factors is as follows:average tree height (0.30)>light brightness value (0.24)>slope (0.23)>soil thickness (0.22).

Research Progress of Effects of Artificial Afforestation on Soil Quality

BAI Song, TANG Ya, HUANG Chengmin

2011,(5):  60-64. 

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Artificial afforestation has significant effect on physical,chemical,and biological characteristics of soils,but the influence degree is closely related to afforestation methods,tree species,soil preparation,stand age and fertilization.In order to solve the problems of recent research in this field,comparative analysis,study of time series,testing for repeated sampling and simulation study are combined organically for research on the evolution mechanism of soil quality of artificial forest,and providing scientific basis for building and management of plantation.

Resource Investigation and Distribution Pattern of Three Armeniaca Species

WANG Libing

2011,(5):  65-70. 

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For better exploitation and utilization of wild apricot resources,this study made clear the definite distribution regions in China on the basis of a systematic and comprehensive investigation of its resource distribution,and made regionalization according to the forest stand concentrated degree and types.The results are as follows:(1) Three kinds of wild apricot distribute vastly in our country.The Armeniaca sibirica scatters in warm zone and warm temperate zone in 11 provinces of China.The Armeniaca mandshurica scatters in northeast 3 provinces of China.The geographic distribution of Armeniaca vulgaris var.ansu is most broad and is found everywhere in 20 provinces of China.(2)The wild apricot can be seen in the most regions in northeast,northwest,north and southwest China.The upper and lower bounds of vertical distribution of the Armeniaca sibirica and Armeniaca vulgaris var.ansu appears a trend of gradual fall from west toward east in China,while the trend of Armeniaca mandshurica is not so obvious.(3) The most centralized region of wild apricot in China is distributed in the southeast foot of Daxinganling mountains.It is the best region of development and exploitation of wild apricot.

Effects of Site Preparation Mode on the Productivity of Larix principis-rupprechtii Plantation in Saihanba

JIA Zhongkui, GONG Ningning, YAO Kai, SI Ruixue, CHENG Sun, WANG Lidong, YOU Weibin, ZHANG Tiantian, LIU Jie, WANG Xiyang

2011,(5):  71-78. 

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Larix principis-rupprechtii plantation growth conditions,biomass and productivity under diffe-rent site preparation mode were investigated.The results show that successive diameter trees,mean diameter growth increment under mechanical soil preparation conditions is greater than manual site preparation;the total forest tree layer biomass per hectare change is 166.94 t (34a) under mechanical soil preparation condition,the total forest tree layer biomass change is 156.34 t/hm² (35a) under manual site preparation,stand biomass of mechanical soil preparation condition is larger than manual site preparation.Under different soil preparation modes,carbon content of each component has small difference,the carbon content of the trunk is in about 45t/hm²,approximately 50% of the total carbon storage.Carbon content of each component and productivity under mechanical site preparation is larger.Mechanical site preparation can increase average productivity 12.4% more than manual site preparation.

Statistic Analysis on Planted Robinia Pseudoacacia Forest Dieback in the Yellow River Delta

LIU Qingsheng, LIU Gaohuan, HUANG Chong

2011,(5):  79-83. 

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On the basis of field plot survey data,characteristics of planted Robinia pseudoacacia forest dieback were statistically analyzed.The results showed that total dieback or dead ratio of planted Robinia pseudoacacia forest was 41.4%.According to tree height and breast diameter data,239 Robinia pseudoacacia trees were classified into three classes, which indicated the dieback ratio increased from 18.2% to 36.3% with tree age.The dieback degree matched normal distribution with parameters of (4.04,2.27),and moderate and severe dieback and dead Robinia pseudoacacia was 66.7 percent of all dieback and dead Robinia pseudoacacia,which indicated that the planted Robinia pseudoacacia forest in the Yellow River Delta was in the status of severe dieback,and needed monitoring of the dieback status and the mechanism needed to be studied and managed synthetically.

Study on the Coupling Relationship between Structure and Function of Water Conservation Forests in Mountainous Area of Beijing

LUO Mei, WANG Wei, ZONG Xue, ZHENG Xiaoxian

2011,(5):  84-88. 

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This paper adopts field investigation and mathematical simulation methods,chooses 7 stand structure factors (the species composition,age,canopy density,origin,level of forest,biomass,soil thickness) to establish the coupling relationship model between the structure and function of water conservation forest in mountainous area of Beijing.Using the model to compare 8 types of Water Conservation Forest in the upper reaches of Beijing Miyun Reservoir,the results show that 1) soil and water conservation function:Broad-leaved mixed forest>Birch forest>Mongolian oak forest>Populus forest>Pine forest>Locust forest>Orientalis forest>Larch forest.2) water conservation function:Populus forest>Mongolian oak forest>Birch forest>Broad-leaved mixed>Larch forest>Orientalis forest>Pine forest>Locust forest.3) improving water quality function:Birch forest>Mongolian oak forest>Populus forest>Broad-leaved mixed forest>Orientalis forest>Locust forest>Pine forest>Larch forest.

Analysis of Land Use Type Changing of Qingshuihe Watershed in Loess Plateau and Ecosystem Service Value

WANG Xiaoyan, SONG Qingfeng, BI Huaxing, GAO Lubo, LIU Lixia, ZHU Yue, XU Huasen, BAO Biao

2011,(5):  89-93. 

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In order to explore land use type changes that were caused by human intervention in Qingshuihe watershed of Loess Plateau and its impact on ecosystem services,the value of ecosystem services was studied with land use type of Qingshuihe watershed in1959,1986 and 2007.Results show that:97% of the total area of Qingshuihe watershed is woodland,grassland and farmland in three times;Land use showed that forest area increased,the area of grassland and farmland decreased;Three kinds of ecosystem service value in addition to the waste disposal and food production,the value of other services from 1959-2007 showed increase,an increase in descending order:gas regulation,raw materials,water conservation,biodiversity protection,soil formation and protection,climate regulation and entertainment culture.Therefore,on the basis of the pursuit of the total value of ecosystem services this watershed could not pursue forest area increase during the construction of the ecological environment but should fully consider local water resources and economic development.

Investigation of Eco-Environment in Chishui Alsophila Natural Reserve

YANG Guangbin, LI Yiqiu, TU Yulin

2011,(5):  94-100. 

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Eco-environment investigation of the Nature Reserve is the basis for its protection,management,sustainable development and utilization.Eco-environment in Chishui Alsophila Natural Reserver was investigated through traditional method and RS & GIS technology.The results show that eco-environment of the Natural Reserve is very weak because of the high hills,steep slopes,broken landform,and the poor corrosion resistance.The contradiction between protection and exploitation is outstanding,and the human interference is increasing.Global climate change will also produce uncertain effects.In view of the present situation of eco-environment of the Nature Reserve,we should focus on the natural reserve protection and development needs,continue to improve the ecological environment research system,guide the construction of the nature reserves, do an active job in the community construction,and establish a new-style harmonious dependence relationship between the community and Nature Reserve.

Study on Water Physiological Characteristics of the Seedlings of five Hippophae rhamnoides Varieties in Semi-arid Area

LIU Qingbai, LIU Mingguo, MENG Hanning, DING Ruijun, YU Qingfu

2011,(5):  101-106. 

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Five Hippophae rhamnoides varieties of (Liaofu1,Liaofu2,Chuyi,Xiangyang,andAlieyi) seedlings were selected for an research object in semi-arid area,Fuxin of Liaoning province,China.Some parameters of water physiological Characteristics of different Hippophae rhamnoides varieties were observed and analysed.The results showed that,during the whole growth season,the leaf water content of the varieties of Hippophae rhamnoides had little change,rangng from 63.60 percent to 72.04 percent;the hydraulic potential change ranges from -0.4 MPa to-0.8MPa,and the regular pattern representation that the higher in the morning and in the dusk,then the lower in the noon;the change range of the stomatal conductance is from 0.16μmolH₂O/m²·Sto 0.42μmolH₂O/m²·S,and the tendency representation was bimodal curve;the change range of the water metabolize coefficient is from 0.992to 1.307; the time of ability of leaf water maintaining is from twenty-eight hours to thirty hours;the change range of the water use efficiency is from 0.964 to 1.587. According to the analysis on the parameters,of the five varieties of Hippophae rhamnoides,the drought resistance of Chuyi was the strongest,Xiangyang andAlieyi were in the middle and Liaofu1 and Liaofu2 were weaker than others.

Study on High Spatial Resolution Forest Fire Risk Zoning in Lianyungang Huaguo Mountain Scenic Spot

FEI Xianyun, GAO Xiangwei, ZHUANG Wenfeng, WANG Hongbo

2011,(5):  107-111. 

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Using 10cm aerial images,based on forest resources surveying,the forest vegetation types and their characteristics were obtained in this paper.At the same time,various topography factors were obtained by the digital DEM.Fire risk indexes were calculated by weighted overlay method and the forest area was divided into five level fire risk zones.They are level Ⅰ(no danger), level Ⅱ(low danger), level Ⅲ(moderate danger), level Ⅳ(high danger),and level Ⅴ(extremely high danger).The result showed that:1) level Ⅰ risk zone had least area quantity that accounted for 3.98% of total study area;2) level Ⅱ risk zone owned largest area quantity and it accounted for 32.25% of total study area;3) level Ⅲ risk zone accounted for 21.05%;4) the ration of level Ⅳ and level Ⅴ was 22.14% and 20.58% respectively,and the sum accounted for 42.72% in entire study area,so fire preventing task was hard in the study area;5) fuel types played an important role in fire risk zone division.Among them,Oak and tea tree played positive action for fire prevention.The distribution area of pine,bamboo and wild grass was very crucial for fire prevention and should be managed and monitored closely.

Research on Industrialization of Application of Domestic Remote Sensing Image in Forest Resources Survey and Disaster Assessment

WU Fayun, XU Zehong, YANG Xueqing

2011,(5):  112-117. 

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In order to reverse the current situation that the forestry remote sensing data mainly depended on imports and to promote the industrial applications of domestic satellite data,this article has studied the overall framework,the application model and the system constitution of application of domestic remote sensing image in forest resources survey and disaster assessment,and has carried out the construction of national and provincial pilot demonstration,and has basically established a process,technicalization,industrialization demonstration system.

Research and Development of the Forest Land Quota Management System

HE Tao, WANG Hongbo, FU Changjie, HU Changru

2011,(5):  118-121. 

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Forest land is an important part of forest resources and how to effectively manage forest lands is important to achieve the General Secretary Hu Jintao's forest dual increase goal that is in 2020 China's forest area and volume compared to 2005 increase by 40 million hectares and 13 billion cubic meters.The forest land quota management is an important part of forest land management,Now the forest land quota management mainly relies on province artificial case by case accounting and report at the end of months.Not only there is a certain lag,but also an over-use of the forest land quota.To solve the above drawbacks,this paper analyses and researches the forest land subdivision rules deeply,and proposes a Service-Oriented Architecture(SOA)-based forest quota management system.This system not only solve the delay,which can achieve real-time management and monitoring of the forest land quota,but also can be flexible to solve some special problems in the forest quota management.

Discussion on the Functions of Modifying Forest Subcompartments Based on ArcEngine

TAN Wei, ZHANG Yan, XU Huarong

2011,(5):  122-130. 

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Compiling sub-compartment polygon is essential for establishing the forest resources database.On the basis of Visual Studio 2005 platform and by use of ArcEngine 9.3 software development module,this study discussed the functions of creation of new polygon and modification and edition for the existing polygon.Furthermore,the functions for the forest updating due to forest logging,forest fire,forest pest,landslide and other project construction,were also discussed,and then the convenient,efficient and intelligent development scheme was proposed.As a result,the efficiency and accuracy of compiling forest sub-compartments were improved.Finally,it was conclude that,(1) The method for seamlessly creating adjacent sub-compartments was proposed under the hypothesis that the start node and end node must be in the adjacent polygons;(2) the scheme for seamlessly compiling the shared border of adjacent polygons was introduced by appending,delete and moving the nodes with the attributes of features unchanged;(3) the updating method and case study for expediently managing forest resources when the sub-compartment was changed by polygon objects,including the geometry object and attributes.

Study on Development of an Active Forestry Information Push System Based on Web GIS Data Mining

JIANG Linsheng, TIAN Wenya

2011,(5):  131-134. 

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There are massive data about woodland resources and access rights of forest farmers in forest ownership management information system,while special websites contain plenty of service information on forest production and management.Mining and comparing the two groups of data,we can achieve the information of coordination of supply and demand.The supply information is pushed to the demander and vice versa,thus realizing the contact between two sides.