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Science china(Technological Sciences) 2006年第Z1期49卷 1-8页

作者： TANG Shouzheng, TANG Una, Guofan Shao & DAI Limin Research institute of Resource Information Techniques, chinese {2. of forestry, Beijing 100091, china institute of Applied Ecology, chinese {2. of Sciences, Shenyang 110016, china Departmet of forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, USA Graduate University, chinese {2. of Sciences, Beijing 100101, china Research institute of Resource Information Techniques Chinese Academy of Forestry Beijing China institute of Applied Ecology Chinese Academy of Sciences Shenyang China Graduate University Chinese Academy of Sciences Beijing China Department of forestry and Natural Resources Purdue University West Lafayette USA

Digital forestry as a concept was developed after the Digital Earth program. The chinese scientists were not only among the pioneers who first proposed the concept of Digital forestry, but also contributed a lot to the development of Digital forestry. Digital forestry is a digital framework to maintain forest planting, management, using, and protect. The synergetic use of computationally-intensive quantitative methods together with information technologies is the most important foundation for the development of Digital forestry. Under this situation, the experience of Digital forestry development in china is relatively rich. A number of academicians, scholars, and professional administrators were involved in discussing the Digital forestry Construction Scheme. The Project of Digital forestry Practicability approved by the State forestry Administration is a major instance in developing Digital forestry standard and key techniques. By introducing a case study of Digital forestry, this paper reviews the concept of Digital forestry, the way turning traditional forestry into Digital forestry, and the future development of Digital forestry.

关键词： Digital Forest, Digital Earth, Digital forestry standard, Digital forestry techniques.

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Constraint Analysis and Countermeasures for china's forestry Scientific and Technological Achievements Transformation

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chinese forestry Science and Technology 2009年第3期8卷 64-70页

作者： QI Yueqing1 BAO Yingshuang2.1. Research institute of Forest Ecology, Environment and Protection, chinese {2. of forestry, Beijing 100091, P. R. china 2. Research institute of forestry Policy and Information, chinese {2. of forestry, Beijing 100091, P. R. china

This paper analyzes the constraint factors of forestry scientific and technological achievements transformation and explores the countermeasures and measures to promote the transformation. It points out that to achieve maximum return from investment funds in forestry research, it shall improve the transformation of scientific and technological achievements, enhance independent innovation capability, and greatly enhance the supply capacity of scientific and technological achievements, so as to provide endlessly a reserve of scientific and technological achievements for forestry development.

关键词： achievement transformation constraint

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BASIC CONNOTATION OF MODERN forestry AND DEVELOPING TREND IN china

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chinese forestry Science and Technology 2009年第3期8卷 10-18页

作者： WANG Dengju Research institute of forestry Policy and Information, {2. academy of forestry, Beijing 100091, P. R. china

The basic connotation of current modern forestry in china was deeply analyzed, and the main characteristics of modern forestry were pointed out. The goals and tasks of chinese modern forestry development in the curren... 详细信息

关键词： modern forestry connotation characteristics goal task

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GIS-based analysis of forest degradations in Baihe forestry Bureau,northeast china

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Science china(Technological Sciences) 2006年第Z1期49卷 167-176页

作者： ZHOU Li, DAI Limin , Guofan Shao, XU Dong, WANG Hui & BAI Jianwei institute of Applied Ecology, chinese {2. of Sciences, Shenyang 110016, china Graduate University of chinese {2. of Sciences, Beijing 100101, china Department of forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, USA Department of City Development, Jinan University, Jinan 2.0002. china {2. of Forest Inventory and Planning, State forestry Administration, Beijing 100714, china institute of Applied Ecology Chinese Academy of Sciences Shenyang China Graduate University of chinese academy of Sciences Beijing China Department of forestry and Natural Resources Purdue University West Lafayette USA Department of City Development Jinan University Jinan China academy of Forest Inventory and Planning State Forestry Administration Beijing China

Forests in the Changbai Mountains are important timber sources for economic development of the society and provide ecological services in northeast china. In order to strengthen forest resource management, this paper analyzed management-induced changes in forest structure, tree species composition and forest landscape pattern from 1987 to 2.00 for Baihe forestry Bureau in Jilin Province based on digitized forest parcel maps and forest survey data. The results suggested that the area of Mature, High-Stocking, and Close-Canopy Forests decreased by 31.4%, 55.9% and 10.7% respectively; volume of Mixed Forest, the native forest vegetation type, decreased by 17.8%;the number of patches increased tremendously but the mean patch density decreased sharply for Mature, High-Stocking, Close-Canopy, and Mixed Forests. All the changes in forest structure, species composition, and landscape pattern indicated severe degradations going on with the forests in Baihe forestry Bureau. Because of the effect of degradation to forest services, restoring forest resources and protecting biodiversity has become urgently important. The strategies of sustainable forest management need to be worked out and implemented.

关键词： geographic information system, forest management, Changbai Mountains, forest change, forest decline.

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Research Review of Post-Evaluation for Comprehensive Benefits of forestry Ecological Programs

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chinese forestry Science and Technology 2008年第3期7卷 16-24页

作者： LIU Yong1 CHEN Jie1 ZHI Ling2.1. Research institute of forestry Policy and Information, {2. academy of forestry, Beijing 100091, P.R. china 2. School of Economics and Management, Southwest forestry College, Kunming 6502.4, P.R. china

The paper summarized the meaning of post-evaluation for comprehensive benefits of forestry ecological programs, discussed and reviewed its development process in terms of content, indicators and methodologies, and finally presented its development trend from the perspectives of theoretical research, methodological research and application research.

关键词： forestry ecological programs post-evaluation comprehensive benefits

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The global climate change and forest prediction in china

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Journal of Environmental Sciences 1994年第3期6卷 310-321页

作者： Jiang Youxuforestry institute, {2. academy of forestry, Beijing 100091, china

The climate change prediction in china based on OCU model as well as summary ana-lyses of GFDL, GISS, NCAR, OCU and UKMO models are used for discussing the approaches topredict the response of the forest in china under double concentration of atmospheric carbondioxide after about 2.2.. The growth, production and distribution boundary of {2. fir(Cunninghamia lanceolata), the tree composition and their growth in cold temperete Daxingan Moun-tain region, and potential forest zones in china are discussed in this paper as example.

关键词： global climate change forest in china prediction.

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Threat and management strategies of potentially invasive insects in china

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Science china(Life Sciences) 2009年第10期52卷 903-910页

作者： ZHANG RunZhi1, ZHANG YaPing2.& JIANG YouXu3 1 State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, institute of Zoology, chinese {2. of Sciences, Beijing 100101, china 2.Kunming institute of Zoology, chinese {2. of Sciences, Yunnan, 6502.3, china 3 The Research institute of Forest Ecology, Environment and Protection, The chinese {2. of forestry, Beijing {{12., china State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture Institute of Zoology Chinese Academy of Sciences Beijing China Kunming institute of Zoology Chinese Academy of Sciences Yunnan China The Research institute of Forest Ecology Environment and Protection The Chinese Academy of Forestry Beijing China

The Global Invasive Species Database, GISD, comprises 2. species of the most significant invasive alien insects in the world (through November, 2.05), 6 of which are originally native to china, 11 are established in china, and 10 have a potential invasion threat to china. This paper discusses these species in terms of distribution, harmfulness and dispersal ways, and finds that: (i) Information re-garding invasive insects in the GISD remains inadequate. Such harmful invasive species as Opogona sacchari (Bojer), Oracella acuta (Lobdell), and Dendroctonus valens LeConte are not included. (ii) Ten species of invasive insects, particularly Lasius neglectus Van Loon and Linepithema humile (Mayr) which become established in areas near china, have the potential to become established in china. (iii) Special attention should be paid to species from Asia and the Americas because of their greater likeli-hood of becoming established in china. Finally, some management strategies including legislation, quarantine, early warning, prevention and control are suggested.

关键词： biological invasions invasive species insect china

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Formal Verification under Unknown Constraints

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Wuhan University Journal of Natural Sciences 2005年第1期10卷 43-46页

作者： LI Guang-hui 1,2.3 , LI Xiao-wei 2.31. School of Information Engineering, Zhejiang forestry College, Hangzhou 311300, Zhejiang, china 2. {2. of Computing Technology, chinese academy of Sciences, Beijing 100080, china 3. Graduate School of the chinese academy of Sciences, Beijing 100039, china School of Information Engineering Zhejiang Forestry College Hangzhou Zhejiang China institute of Computing Technology Chinese Academy of Sciences Beijing China Graduate School of the chinese academy of Sciences Beijing China

We present a formal method of verifying designs with unknown constraints (e.g., black boxes) using Boolean satisfiability (SAT). This method is based on a new encoding scheme of unknown constraints, and solves the corresponding conjunctive normal form (CNF) ***,this method can avoid the potential memory explosion, which the binary decision diagram (BDD) based techniques maybe suffer from, thus it has the capacity of verifying large designs. Experimental results demonstrate the efficiency and feasibility of the proposed method.

关键词： formal verification unknown constraints black box Boolean satisfiability Boolean comparison

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Detection of the urban heat island in Beijing using HJ-1B satellite imagery

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Science china Earth Sciences 2010年第S1期53卷 67-73页

作者： YANG Jun1,GONG Peng2.ZHOU JinXing3,HUANG HuaBing2.& WANG Lei2.1 Key Laboratory of Silviculture and Conservation,Ministry of Education,Beijing forestry University,Beijing 100083,china 2.State Key Laboratory of Remote Sensing Science,jointly sponsored by the {2. of Remote Sensing Applications,chinese academy of Sciences and Beijing Normal University,Beijing 100101,china 3 {2. of Desertification Studies,chinese academy of forestry,Beijing 100091 china Key Laboratory of Silviculture and Conservation Ministry of Education Beijing Forestry University Beijing China State Key Laboratory of Remote Sensing Science jointly sponsored by the Institute of Remote Sensing Applications Chinese Academy of Sciences and Beijing Normal University Beijing China institute of Desertification Studies Chinese Academy of Forestry Beijing China

Satellite images are used extensively in studying the urban heat island(UHI) *** evaluated the suitability of thermal infrared(TIR) data from the HJ-1B satellite for detecting UHI using a case study in *** modified algorithms for retrieving the land surface temperature(LST) from HJ-1B data were *** results were compared with LST images derived from a Landsat TM thermal band and the MODIS LST *** spatial pattern of UHI generated using HJ-1B data matched well with that produced using TM and MODIS *** the two algorithms,the mono-window algorithm performed better but further tests are *** more frequent coverage than TM and higher spatial resolution than MODIS,the HJ-1B TIR data present a unique opportunity to study thermal environments in cities in china and neighboring countries.

关键词： surface temperature NDVI mono-window algorithm single-channel algorithm

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A STUDY ON ENERGY OF ARTIFICIAL DAHURIAN LARCH COMMUNITY

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Journal of Northeast forestry University 1992年第2期3卷 101-108页

作者： Liu ShirongThe Research institute of forestry,{2. academy of forestry The Research institute of forestry Chinese Academy of Forestry China

By means of calorimctry measurement, the caloric values of various components, the standing crop of energy, net energy production and energy conversing efficiency of an artificial dahurian larch community at Laoshan Plantation Experimental Station of Maoer Shan Forest Farm in the eastern part of northeast china were determined and studied in the present paper. The result of the experiment were as follows: (1) caloric value varied with plant species and plant organs, in general, the order of caloric value was tree, shrub and herb, and for different organs, was leaf, branch, trunk (stem), bark and root. (2. The standing crop of energy of larch community and tree layer were 2.9.719 × 1010J/ha. and 2.4.440×10l0J/ha. respectively. There existed different distributions of energy in various components and different layers. (3) Net energy production of larch community and its tree layer were 2.4.346 × 108J/ha.a and 2.3.678 × 108J/ ha.a respectively. To the photosythctical active radiation on the stand, its energy conversing efficiency was 2.2.90%. Compared with other common forest communities in nature, artificial larch community has a relative larger energy production and higher conversing efficiency.

关键词： Energy Larch Community

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