Table of Content

28 February 2009, Issue 1

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Discussion on Development of Forestry Data Table System in China

BAI Weiguo, WANG Zhuxiong

2009,(1):  1-7.  doi:10.13466/j.cnki.lyzygl.2009.01.006

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This paper presents a description on the development process of forestry data table (FDT) and analysis on present situation, existing problems and causes.Some development strategies are put forw ard such as int roducing new idea and knowledge, improving the system frame of FDT, programming the FDT development reasonably, managing the FDT in a scientific way, enhancing the support of technology for FDT and carrying out experiments and demonstration for nationwide extension and dissemination.

Issues and Countermeasures of Collective Forest Tenure System Reform in Beijing

ZHANG Xiuli, XU Jide, WANG Lijun

2009,(1):  8-10.  doi:10.13466/j.cnki.lyzygl.2009.01.021

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The paper analyses the major issues in collective forest tenure system reform work in Beijing and puts forward relevant countermeasures for the work.

New Situation and Measures for Management of Forestry Land after Reform of Collective Forest Tenure System

LIU Guoshun, WANG Bin, DUAN Shaoguang

2009,(1):  11-13.  doi:10.13466/j.cnki.lyzygl.2009.01.022

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Reform of collective forest tenure system is under way nationwide in China.Such a reform involves lots of stakeholders, units and entities related to forestry with forest farmers as the major component in forest management.This paper analyses the new situation in forest management after the reform in terms of disaster control, technial management, seedling production, etc.and puts fo rw ard some relevant suggestions on forest land managment.

Review and Study of Collective Forest Tenure Reform in China

HAN Lida, XU Huaiwei

2009,(1):  14-18.  doi:10.13466/j.cnki.lyzygl.2009.01.023

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This article carries out a review on the path of collective forest tenure change in China.Then it brings a narrative of the collectively-ow ned forest tenure reform situation at present.The article pointes out the issues which have existed in the collective forest tenure reform, and makes an analysis on the reasons of those issues, and puts forward some suggestions about taking forest farmers as the main body in forest management, involvng forest workers' in the reform, promotion of forest land and foresttrading, developing the ecological forestscientifically and reasonably, reforming forest cutting quota system and forestry taxes system and establishment of the platform of forest tenure trading.

Thoughts on Development of Enterprise's Raw Material Forests in Jiangxi Province

WANG Lianmao,CHENG Baodong, SONG Weiming, LI Ran

2009,(1):  19-22.  doi:10.13466/j.cnki.lyzygl.2009.01.024

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This paper studies the raw material forest const ruction of the leading enterprises in Jiangxi Province and analyzes the development status of the raw material forest construction in terms of the size, const ruction and financing mode, on the basis of which the main existing problems are summarized, such as high forest land transaction fee, low degree of intensive management, poor financing and investment,weak innovation capacity, and soon.Lastly, this paper concludes with the relevant countermeasures, which give some reference to other domestic regions.

Some Thoughts on the Sustainable Forest Management Plan

ZHANG Wen

2009,(1):  23-26.  doi:10.13466/j.cnki.lyzygl.2009.01.007

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Sustainable development is the main development concept at present.Sustainable forestry development is an inevi table choice and requirement with the current development theme.Drawing up the sustainable forest management plan is an important guarantee for the sustainable development of forestry.Based on the review on t raditional forest management, the author studied the gap between the information needs of the sustainable forest management plan and the traditional forestry resources investigation, analyzed the status and role of sustainable forest management plan in current forest management and major issues in preparation of sustainable forest management plan.Additionally, the author also gives some advices on the planning combined with the current stage of forest resources survey and management.

Impacts of the Property Right Law on Wild Plant Management

LUO Yanping, WEN Yali

2009,(1):  27-30.  doi:10.13466/j.cnki.lyzygl.2009.01.017

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The unclear property right of wild plant resources led to the overuse of wild plants and difficulties in the management.To deal with such a situation, Property Rig ht Law was issued in 2007.It was the first time that the property right of wild plants was mentioned in a law.The Law will be helpful to make clear the property right of wild plants.Whereas, the lack of auxiliary law s or regulations to the Property Right Law will also cause some issues in the management and utilization, such as lack of compensation to the owners of wild plants who have the responsibility to protect wild plants.In the paper, the effects of the Property Right Law on wild plant management are analy sed and some suggestions are given.

Discussion on the Issues Arising from Following the Code for Forest Asset Assessment

WANG Hongwei, HUO Zhenbin, ZHAO Jianping

2009,(1):  31-34.  doi:10.13466/j.cnki.lyzygl.2009.01.025

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With th practical experiences of following the Code for Forest Asset Assessment, the authors have found some limits in the application of the Code.Based on their own understanding of the Code and professional knowledge on forest asset assessment, the authors propose some remedies for the Code.It is highly recommended that the Code should be revised.

Dynamics of Net Production of Chinese Forest Vegetation Based on Forest Inventory Data

WANG Bin, LIU Moucheng, ZHANG Biao

2009,(1):  35-43.  doi:10.13466/j.cnki.lyzygl.2009.01.008

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According to the net primary productivity data of 1 266 samples about different forest ty pes in China, the functional relationship between biomass, volume, community g row th and annual li tter fall about Chinese major forest types were established and the net production and dynamic changes about Chinese forest ecosystems were studied by using the data from six NFIs of China from 1973 to 2003.The results showed that the net production of Chinese forest vegetation was 1 360.64×10⁶t/a during the 6th NFI, and the average net primary productivity was 9.53 t/hm².a.The net production was composed mainly of young and middle-age forests and had some differences between dif ferent regions with the net production hig her in northeast and southwest, and lower in other reg ions.From 1973 to 2003, the net production of Chinese forest vegetation increased from 790.13×10⁶t/a to 1 360.64×10⁶t/a.The net production was the low est before 1970s and then increased gradually. Whereas the average net primary productivity of Chinese forest vegetation was higher before 1970s and decreased until the end of 1990s and then increased again.

Study on Natural Regeneration of Larix gmelinii in Cold-temperate Zone

XI Qinghu, TIE Niu, SHU Mei, LIU Wenjun

2009,(1):  44-48.  doi:10.13466/j.cnki.lyzygl.2009.01.009

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Research work was conducted on the size-class structure and the spatial distribution pattern of the natural regeneration seedlings, which belong to the virg in forest, successive cutting forest and clear cutting forest of Larix gmelinii in north Daxing' anling in Inner Mongolia.The results show that the size-class st ructure of the natural regeneration seedlings bo th in the virgin forest and in the successive cutting forest belong to the stable structures of the population, which favors the continuous regeneration of the population, w hereas the size-class seructure of the natural regeneration seedlings in the clear cutting forest belongs to the declined st ructure of the population, which goes against the continuous regeneration of the population.The spatial distribution pattern of the natural regeneration seedlings in the three typs of forests assumes an aggreg ate distribution.And by the degree of agg regate distribution the highest of the three forest types is the virgin forest, the clear cutting forest comes second, the successtive cutting forest third.This paper also puts forw ard some sug gestions about management of Larex gmelinii.

Development and Apraisal of the Sustainable Forest Management Index System for Erdos Forest Farm

SHEN Hong xia, QIAO Jiaoqi, QIAO Mudan, ZHANG Qiuliang

2009,(1):  49-53.  doi:10.13466/j.cnki.lyzygl.2009.01.010

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Development of sustainable forest management index systems for different forest management units is the foundation for realization of forestsustainable management.This article, based on Erdos Forest Farm management practice and using the target method and ex pert consultancy, gives a description on a forest farm-level sustainable forest management index system which contains 30 indicators at 4 levels.Then the current condition of Erdos Fo rest Farm has been appraised with the index system, The resultshows that the comprehensive index is 0.778, The tendency of the management is basically sustainable.The key factors of forestsustainable management are found according to the appraisal. Those factors include forest ecosystem diversity indices, utilization rate of forest land, unit area increment growth of forest land, annual incidence rate of pests and rat disasters of forest and soon.

The Forest Health Assessment Indicator System Based on the Biodiversity for the Quercus Mongolica Forest in Beijing Area

ZHANG Lingli, LIU Yi, LI Jingwen, PENG Cheng, SU Min

2009,(1):  54-59.  doi:10.13466/j.cnki.lyzygl.2009.01.011

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Based on field investig ation in the main distribution area of Quercus Mongolica forest, under the guidance of the principles of completeness, maneuverability, comparability and applicabili ty, this article aims at establishment of a forest health assessment indicator system and assessment method for Quercus Mongolica forest with the help of the complex st ructure and function indicator method, and thus of fering the scient ific theory for forest health management of the Quercus Mongolica forest in Beijing area after a comprehensive survey of the Quercus Mo ngolica forest health in the area above-mentio ned.In this study, biodiversity, vigo r, resilience and soil condition are taken as the indicators to evaluate forest ecosystem and the latest research of Quercus Mongolica forest and the natrual conditions and forest vegetation in Beijing are taken into consideration as well.

Study on the Structure Characteristics of Populus euphratica Community in Tarim Basin

PENG Jie,HAN Lu, WANG Haizhen, MA Chunhui, Pang Xinan

2009,(1):  60-64.  doi:10.13466/j.cnki.lyzygl.2009.01.012

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There are few plants in the community of populus euphratica and the vegetation st ructure is simple, forming the desert galleria landscape.In terms of genus geographical elements, many of them are distributed in cosmopolitan.According to Raunkiaer's statistics of life-form, the number of phaenerophy te life-form of this community is of dominant type, followed by the hemicryptophy te.The characteristics of the community leaf is mainly microphyll, simple, leathery and unentire.The vertical structure of communi ty is relatively simple which can be divided into tree layers, shrub layer and herb layer as well as a definite number of interst ratum plants.The species diversity increases prog ressively from tree, shrub to herb layer.The age structure of populus euphratica is stable.

Evaluation on Ecological Security in Shiyanghe Valley, Gansu

GAO Junfeng, YANG Yuejun

2009,(1):  65-69.  doi:10.13466/j.cnki.lyzygl.2009.01.001

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The evaluation of ecological security and controlling of desertification are focus of domestic and overseas researchers.In the paper, with the Shiyanghe valley of Gansu as an example, indexes of ecological security were const ructed, the ecological security was evaluated, and countermeasures of controlling desertification were put forw ard.Result s show that the ecological security of Shiyanghe valley was at a moderate level, that of the north of valley was w orse, and the area of oasis, economic development, utilization of water resources were main factors affecting the valley ecologcial security, and the natural and human factors were primary drivers of valley ecological security and desert ification.This paper is aimed at providing some theorical basis and reference to other regions of Gansu in terms of ecological security and desertification combating.

Study on Landscape Changes of Huairou Reservoir Watershed in Recent 15 Years

XIA Bing, YU Xinxiao, LU Shaowei, SUN Qingyan, NING Jinkui

2009,(1):  70-75.  doi:10.13466/j.cnki.lyzygl.2009.01.019

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Based on RS and G IS techniques and using remote sensing images of 1990-2005 period as a source, the landscape dynamic characteristics of Huairou Reservoir w atershed during the 1990-2005 period were collected and analyzed by ARCGIS.The development and transforming of landscape ty pes of Huairou Reservoir watershed were simulated and comprehended with Markov model.And the resultshowed that landscape pattern of watershed formed mostly of shrub forest and broad leaved forest was comparatively steady.The proportion of area of broad leaved forest, boreal forest and mixed plantations was enlarged, and the area of shrub forest was descended.The area of other landscape type decreased in past 15 years, but there was no big change in farmland type.

Study on the Landscape Spatial Pattern Evolution of Natural Forest in the Changhua Jiang Basin of Hainan Province

GUAN Xuebin, ZHANG Cuiping, JIANG Jusheng

2009,(1):  76-79.  doi:10.13466/j.cnki.lyzygl.2009.01.013

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Based on the remote sensing image data, and with the support of Ecognition, a professional objectoriented remote sensing classification soft ware and Arcgis, the spatial information of the natural forest acquired in the years of 1995, 2000 and 2007 for the Changhua Jiang Basin was extracted for the analysis of the overall changing characteristics of landscape pattern.The software of Fragstats was for data processing and indexes calculating. The landscape patch density indexes, the landscape patch quantity f ragmentation indexes, landscape patch shape f ragmentation indexes and landscape isolation indexes were selected for assessing landscape f ragmentation.The overall changing situation of landscape fragmentation is as follows:total area of the natural forest in the study area was 1 431.38km² in 1995, 2 143.17km² in 2000, while in 2007 reduced to 1 487.98km².Spatial pattern of wildwood landscape has taken wave-shaped change.At present the dest ruction of natural forest is serious.These results provide the scientific basis for natural forest development and recovery.

Influence of Environmental Factors on Broad-leaved Forest—Study on the Relationship between Stand Stock and Slope Position

QIAN Yongping, LI Baoyin, WU Chengzhen, HONG Wei, HONG Tao, ZHANG Yanyan

2009,(1):  80-83.  doi:10.13466/j.cnki.lyzygl.2009.01.014

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According to the fif th forest invento ry in of Fujian Province, the data collectd from 750 plots were analy zed in this paper.After χ² examination, the residual analysis and the log-linear simulating, relationships between stand stock and slope position were analyzed.The major results are as follow s:the relation of stand stock and slope position is obvious in χ² examination;and the stand stock is decreasing with the changes of slope position from slope valley to mountain ridge, which is consistent with the results of the order association determination.But there are some differences between the estimations of major effect and interaction effect, which may result from the inf luence of human factors on the broad-leaved forest.

Modeling on Moisture Content Predicting of Surface Fuel of Litter-fall Layer in Pinus armandii Plantations

LI Shiyou, SHU Qingtai, MA Aili, ZHANG Qiaorong, LIU Yan, WANG XiangQin

2009,(1):  84-88.  doi:10.13466/j.cnki.lyzygl.2009.01.015

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The study tested 153 groups of ai r temperature(x₁), relative humidity (x₂), surface temperature of lit ter layer(x₃), surface temperature of humic substances layer (x₄), thickness of li tter-fall layer(x₅) and moisture content of surface fine fuel of lit tler-fall layer(y) in Pinus armandii plantations between 2-5 forest fire danger rating classes in forest fire season in 2008, and the multivariate linear model on moisture content predicting of surface f ine fuel of lit ter was established.The results showed that the main factors inf luencing the moisture content of surface fine fuel were arranged in order of x₃>x₂>x₄>x₁.The model selected factors of forest fire environment and fuel characteristics which could be acquired easily to predict moisture content of fuel, and might provide accordance for forest fire danger forecasting, prescribed burning, forest management burning etc.

RS and GIS-based Analysis on Dynamic Changes of Desertified Land in Toksun County

GUO Jing, LIU Ping, GAO Yaqi, WANG Bingchao, LIU Lu

2009,(1):  89-94.  doi:10.13466/j.cnki.lyzygl.2009.01.002

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In this paper, TM satellite image data acqui red in 1990, 1999 and 2005 and field survey data acquired in 2007 were used for the analysis on the state and dynamic changes of desertified land and its eveolution process in Toksun County, Xinjiang.The results showed that desertified land area was 804 751hm²,w hich accounted for 51.54% of w hole Toksun County area in 2005.The sandy land area in the southern part and farmland area was in ex tension process and the sandification land area cansed by w ind erosion in the eastern part was expanding seriously in the years from 1990 to 1999.And the southern area and farmland area of Toksun still was in extension period from 1999 to 2005.Since a series of control measures were adopted in the eastern enclosed area of Toksun, the sandy land area was reduced and began to become better gradually.Climate change was the main driving fo rce of the desertification in the southern part.In the eastern area climate change and human factors were the driving force.Based on comprehensive eco-enviro nment characteristics in study area, the paper put forw ard the corresponding desertification land control measures for each area.

Research on Land Desertification of Beijing Piedmont Plain Area Based on Remote Sensing Technology

LIU Ke, ZHAO Wenji, HU Deyong

2009,(1):  95-100.  doi:10.13466/j.cnki.lyzygl.2009.01.003

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Land desertification, which is also the key factor restricting the development of Beijing, has become one of the mostserious ecological enviro nmental problems in the capital.As a result, it is urgent to study the transformation trends and formation causes of the land desertification for guaranteeing the ecological security and improving the ecological environment quality in Beijing.SPOT5 data (including panchromatic and multibands) of Beijing area in April 2007 were acqui red.The land desertification in the piedmont plain of Beijing was recognized and ex tracted with three ty pes of data (vegetation coverage, soil type and land use) from above remote sensing data.According to the ex tracted information, the desert ification status and dynamic characteristics were analyzed and evaluated with the support of RS technology.Then the formation causes of desertification were discussed combined with multiple statistical data such as meteorological information, hy drological information and soon.The resultshows that with the double effect s of nature and human beings, Yongding River, Chaobai River, Dasha River, Kangzhuang, Nankou and thei r surrounding areas are the principal distributing areas of the desertification land in Beijing.They are all f ixed sand areas that mainly contain mild and moderate desertificatio n.By comparing the result data of the land desertification among the years of 1999, 2004 and 2007, it is found that the total area of the desertification land has the trend of decrease.The area of the desertification land in each county in the suburb is reduced except Yanqing.It proves that the action of preventing and controlling the land desertification has obtained prominent effect.However, the phenomenon of destroying at the same time of improving st ill exists in some areas.Combating the land desertification still has a lo ng way to go.

Research Progress of Dustsource of Sand-Duststorms

LI Feng

2009,(1):  101-106.  doi:10.13466/j.cnki.lyzygl.2009.01.004

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Aeolian dust affects significantly global climate change, and its source is one of the focuses in research on sand-duststorms.In this paper, the domestic and foreign research progress of dustsource of sand-duststorms are reviewed from the aspects of historic references, geological records, modern long-term observations and sand-duststorm events.Some problems of dustsource of sand-duststorms are discussed.

Remote Sensing Image Classification Based on SVM Method for Ecological Service Forests

REN Qiong, JIANG Hong, CHEN Jian, LI Tusheng, PENG Shikui, YU Shuquan

2009,(1):  107-113.  doi:10.13466/j.cnki.lyzygl.2009.01.020

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This paper deals with the RS image classification based on the SVM method, using space characteristic information for classification of IKONOS high spatial resolution images and monitoring of public w elfare forests.Analy sis was conducted on comparison of this method with tradition method. The resultshow s that the RS image classification based on the SVM method can solve the image classification fragmentation, low accuracy etc, and has advantage in study speed, orientation abili ty and expression, etc.The aim of this paper is to discuss a method to inquire into the classification method of public welfare forests with high spatial resolution RS image and providing theoretical basis and data support for the development of forestry information netw ork and “digi tal forestry”.

Application of Fuzzy Clustering Analysis Method in Forestry Division

LI Jun, LI Xiaomei, KANG Zhiqiang, ZHANG Qiuliang

2009,(1):  114-117.  doi:10.13466/j.cnki.lyzygl.2009.01.026

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Based on the natural, social and economic conditions of Wulanchabu City, seven indexes are selected, which are average elevation.average annual rainfall, average temperature, forest coverage, natural forest area, per capita income of farmers and ecological forest area.The fuzzy clustering analysis method is used for the w hole area, which is divided into 5 sub-areas by using clustering method. The five sub-areas include timber forest at the south foot of Yinshan mountains, protective forest in the loess hilly area at the south foot of Yinshan mountains, special purpose forest at the no rth foot of Yinshar mountains, timber forest in the Qianshan hilly area of Wulanchabu city and special purpose forest in Huitengliang area of Yinshan mountains.Big dif ferences exist in natural conditions among those areas, but no dif ference wi thin each individual area.According to the specific conditions of each area, some strategies, targets and suggestions for forestry development are put forw ard in this paper.

An Inquiry into Forest Resources Information Integration Based on Oracle Streams

YAO Shunbin, Wen Xuexiang

2009,(1):  118-121.  doi:10.13466/j.cnki.lyzygl.2009.01.018

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Oracle st reams enable synchronous data update, fine information selection, flexible transformation, and single solution.Aimed at problems in forest resources information system const ruction, this paper raises a set of solutions to forest resources information integration based on Oracle streams, and provides new ideas and new methods to solve these problems as far as technologies are concerned.

Research on Distribution Characteristics of Garden Plants in Beijing Municipality

WANG Disheng

2009,(1):  122-127.  doi:10.13466/j.cnki.lyzygl.2009.01.005

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By using sampling method, 2 789 sample trees in 138 sample plo ts were measured in Dongcheng District of Beijing Municipality. The measurements include their individual diameter, height and crow n sizes.Based on the mensurements, research work was conducted on their distribution in terms of diameter and height, modelling of diameter-height relationship and modelling of diameter-crow n size relationship.Statistic features between garden plants and plants under the natural conditions were also studied.

Private Forest Harvesting Management in Developed Countries and Its Inspiration to China

ZHANG Decheng, LI Zhiyong, XU Bin

2009,(1):  128-135.  doi:10.13466/j.cnki.lyzygl.2009.01.016

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This paper makes an overview of private forest logging management system of eight major developed count ries and sums up their characteristics, and then puts forw ard proposals on China's collective forest tenure reform and harvesting system reform.It indicates that foreig n developed count ries develop their private forest harvesting systems on th basis of their local conditions.Local governments have more pow er for private forest management and guide private forest harvesting with sustainable forest management idea.It advises that China must adhere to the collective forest harvesting permit system to improve the relevant law s, formulate forestry planning and allow forest landow ners to develop their forest management plans.Various policies must be implemented to regulate priv ate forest harvesting activi ties and strengen post-harvest forest management.China must develop various private forest management systems actively for different areas.