检索结果-南通市图书馆

Impacts of the Wenchuan Earthquake on the Giant Panda Nature Reserves in China

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2010年第2期7卷 197-206页

作者： DENG Xiangzheng JIANG Qunou GE Quansheng YANG LinSheng institute of geographic {2. and natural resources research Chinese Academy of Sciences Beijing 100101 China Center for chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China Graduate University of the chineseacademy of {2. Beijing 100049 China

The Wenchuan Earthquake that occurred in May of 2.08 caused damages to large areas of Sichuan,Gansu,and Shaanxi provinces in *** from local governments and related management agencies show that the giant panda nature reserves in the earthquake-hit areas were heavily *** estimates in this paper of the impacts of the earthquake on the giant panda in the earthquake-hit areas were made based on the interpretation of remote sensing images and information collected by field survey.A rapid assessment method was designed to estimate the damages of the earthquake on giant panda *** using visual interpretation methods,we decoded the remote sensing images of the disaster area in the 49 giant panda nature *** results showed that the Wenchuan Earthquake and the succeeding secondary geological disasters caused great damages to the giant panda nature reserves and disturbed the normal life of the giant pandas there (e.g.,landscape fragmentation increased significantly).Undoubtedly,the life of the giant pandas there was ***,although the earthquake caused certain impacts on the giant pandas,it did not really threat their *** so,we still strongly advocate for protection of the giant pandas,and have prioritized a couple of measures to be taken to restore the giant panda nature reserves in the earthquake-hit areas.

关键词： Wenchuan earthquake Remote sensing Giant panda Giant panda nature reserve Rapid assessment method

Monitoring Dynamic Change of Land Cover Based on SVM and Satellite Images in Hanoi,Vietnam

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of natural sciences 2010年第4期15卷 355-362页

作者： ZHAO Jinling1,2. LIU Chuang1, 3 1. institute of geographic {2. and natural resources research, chinese academy of sciences, beijing 100101, China 2. Graduate University of chinese academy of sciences, beijing 100049, China 3. College of resources Science and Technology, beijing Normal University, beijing 100875, China institute of geographic {2. and natural resources research Chinese Academy of Sciences Beijing China Graduate University of chinese academy of sciences Beijing China College of resources Science and Technology Beijing Normal University Beijing China

An integral method,combining support vector ma-chine (SVM) with remote-sensing analysis techniques,was ex-plored to monitor Hanoi’s dynamic change of land cover. The landsat thematic mapper (TM) image in 1993,the enhanced the-matic mapper plus (ETM+) image in 2.00,and the image with the charge-coupled device camera (CCD) on the China-Brazil earth resources satellite (CBERS) in 2.08 were used. Six land-cover types,including built-up areas,woodland,cropland,sand,water body and unused land,were identified. The detected results showed visually the rapid urban expansion as well as land-cover change of Hanoi from 1993 to 2.08. There were 12.637.54 hm2.cropland de-creased between 1993 and 2.00,and 8 2.7.6 hm2.cropland de-creased between 2.00 and 2.08. Compared with cropland,wood-land firstly decreased and then increased,and the other types did not change significantly. The results indicate that CBERS dataset has the application potential in world resources {2.es.

关键词： land cover the China-Brazil earth resources satellite (CBERS) support vector machine (SVM) change detection

China's Regional Policies:Progress of the 11^(th) Five Year Plan Period and Prospect of the 12.(th) Five Year Plan Period

在线全文

学校读者我要写书评

暂无评论

chinese Journal of Population,resources and Environment 2011年第2期9卷 90-96页

作者： Chen Xuebin1,2.1.institute of geographic {2. and natural resources research,chinese academy of sciences,beijing 100101,China 2.National Development and Reform Commission,beijing 10082.,China institute of geographic {2. and natural resources research Chinese Academy of Sciences Beijing 100101 China National Development and Reform Commission Beijing 100824 China

During the 11th Five Year Plan period,China improved its policy system for the overall strategy of regional development,and established and completed the policies intended for the promotion of regional cooperation and ***,regional development in China took on a series of positive changes such as the enhancement of *** the 12.h Five Year Plan period,China will fully implement and continuously improve the policy measures for development in its four major regions,strengthen differentiated guidance to different regions in line with the planning for major function-oriented zones,and accelerate the establishment of basic systems that facilitate coordinated regional development.

关键词： regional policy progress prospect

Environmental Implication of Intensive Farming Practices on North China Plain

在线全文

学校读者我要写书评

暂无评论

chinese Journal of Population,resources and Environment 2005年第3期3卷 11-20页

作者： Zhen Lin 1, Zhou Hailin 2.& Xie Gaodi 1 1 institute of geographic {2. and natural resources research, chinese academy of sciences, beijing 100101 , China 2.The Administrative Center for China's Agenda 2., beijing 100089, China institute of geographic {2. and natural resources research Chinese Academy of Sciences Beijing 100101 China The Administrative Center for China’s Agenda 2. Beijing 100089 China

The current pressure on production resources of North China Plain, such as land and water to feed the growing population, necessitates the assessment of the sustainability of farming practices. This study focuses on the sustainability of farming practices related to groundwater and soil fertility management. The assessment is based on selected site-specific key indicators and their established threshold limits. The current farming practices in the study area are clearly unsustainable. Only about 6% of the surveyed farm households practice sustainable farming. The study stresses that farming practice, which is economically sustainable, should not be promoted at the cost of environment. Holistic strategies need to be developed and implemented that aim at balanced use of inputs, which satisfy both productivity and environmental concerns.

关键词： sustainability indicators threshold values farming practices environmental implication

Structural patterns of land types and optimal allocation of land use in Qinling Mountains

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of geographical sciences 2001年第1期11卷 99-109页

作者： LIU Yan-sui, DENG Xiang-zheng (institute of geographic {2. and natural resources research, CAS, beijing 100101, China) institute of geographic {2. and natural resources research CAS Beijing China

The case study based on Qinling Mountains in Shaanxi Province of China, in virtue of the information from TM image, classifies the land types and analyzes their spatial and temporal differential law, and puts forward three structural patterns of land types in mountainous areas, namely, spatial, quantitative and qualitative structures of mountainous land types. Furthermore, it has been noticed that the analysis of structural patterns can disclose the heterogeneity and orderliness of combination of land types, which can lay the theoretic foundation for comprehensively recognizing ecological characteristics and succession law of structure and function of land types. After the all-around comparative analysis, an optimal allocation of land use in Qinling Mountains has been put forward according to the principle of sustainable development and landscape ecology, which can lay the scientific foundation in practice for the structural adjustment and distribution optimization from the macro level to micro level.

关键词： land types succession of land types structural patterns optimal allocation Qinling Mountains

geographical Agglomeration of chinese Manufacturing Industries

在线全文

学校读者我要写书评

暂无评论

中国人口·资源与环境：英文版 2007年第2期5卷 3-11页

作者： Zhang Hua 1, 2. Zheng Wei3 1. institute of geographical {2. and natural resources research, chinese academy of sciences, beijing 100101, China 2. Graduate School of the chinese academy of sciences, beijing 100039, China 3. School of Geography, beijing Normal University, beijing 100875, China institute of geographical {2. and natural resources research Chinese Academy of Sciences Beijing 100101 China Graduate School of the chinese academy of sciences Beijing 100039 China School of Geography Beijing Normal University Beijing 100875 China

Based on the plant level data from the First National Census of Basic Units, the Second National Census of Basic Units, and the First National Economic Census of China, this paper ex- amines the geographical agglomeration of chinese manufacturing industries at a more disaggregated level both by industrial classi-fication and spatial unit analysis. Applying the agglomeration index proposed by Maurel and Sedillot, studies show that the most agglomerated industries are resource-intensive, and capital and technology intensive while industries demanding localized inputs or serving localized markets or favored by local governments are fairly dispersed. The more disaggregated industries are more spa- tially agglomerated. At the finer spatial scale, industries are more dispersed. Results indicate that within-county spillovers are stronger than nearby-county spillovers, and within-prefecture spillovers are stronger than nearby prefecture spillovers. Local- ized spillovers are still quite substantial at a range beyond that of counties. Comparing the agglomeration index of chinese manu- facturing industries in 1996, 2.01 and 2.04, agglomeration seems to be a general tendency. Results also indicate that some industries have experienced remarkable changes in their levels of agglom- eration in the period 1996–2.04.

关键词： industrial agglomeration manufacturing industries the MS index

Spatial heterogeneity of the driving forces of cropland change in China

在线全文

学校读者我要写书评

暂无评论

Science China Earth sciences 2005年第12期48卷 2231-2240页

作者： LIU Xuhua1,2. WANG Jinfeng1, LIU Mingliang4,1 & MENG Bin1,2.3 1. institute of geographic {2. and natural resources research, chinese academy of sciences, beijing 100101, China 2. Graduate School of the chinese academy of sciences, beijing 100039, China 3. College of Arts and {2. of beijing Union University, beijing 100083, China 4. School of Forestry and Wildlife {2., Auburn University, Auburn, Alabama, AL36849, USA institute of geographic {2. and natural resources research Chinese Academy of Sciences Beijing China Graduate School of the chinese academy of sciences Beijing China School of Forestry and Wildlife sciences Auburn University Auburn Alabama USA College of Arts and sciences of beijing Union University Beijing China

By using digital satellite remote sensing data acquired in 1987―1989 and 1999―2.00 and GIS combined with the natural and socio-economic data, this paper drew an integrated zonation of the cropland change and its driving forces in China. The results indicated that the cropland change in the study period was constrained by geographical factors and driven by cli-mate change as well as socio-economic system. Moreover, the regional differences of the drivers for cropland change were significant. In the midwest of China, natural condition changes and geographical background were the main constraints and drivers, while in Eastern China, social and economic changes and economic policies were the main driving forces. The cropland loss was nationwide. The dominant factors to cause this decrease included buildup of developing area to attract foreign capital and technologies, changes of industry structure due to urban in-fluence, the change of employment notions thanks to living standard improvement, rapid ur-banization due to the expansion of cities and towns, the diminished farming net income partly because of the global warming effects, and the rapid economic growth stimulated by the con-venient transportation system. These factors interact and interdepend with each other to cause the cropland loss in China recently. The reasons for the increase of cropland were primarily the cultivation and deforestation by the farmers who want to increase income. This study on the mechnism of LUCC relied on the cropland change integrated classification considering the natural or human factors both inside and outside the region, which provides a new approach to study the integrated regionalization and LUCC mechanism.

关键词： land use change, driving force, integrated classification, spatial statistics, cropland, China.

Vegetation and soil carbon storage in China

在线全文

学校读者我要写书评

暂无评论

Science China Earth sciences 2004年第1期47卷 49-57页

作者： LI Kerang, WANG Shaoqiang & CAO Mingkuiinstitute of geographic {2. and natural resources research, chinese academy of sciences, beijing 100101, China Department of Geography, Maryland University, College Park,MD 2.742. USA Correspondence should be addressed to Li Kerang Inst. of Geogr. Sci./Nat. Rsrc. Res. Chinese Academy of Sciences Beijing 100101 China Department of Geography Maryland University College Park MD 20742 United States

This study estimated the current vegetation and soil carbon storage in China using a biogeochemical model driven with climate, soil and vegetation data at 0.5°latitude-longitude grid spatial resolution. The results indicate that the total carbon storage in China's vegetation and soils was 13.33 Gt C and 82.65 Gt C respectively, about 3% and 4% of the global total. The nationally mean vegetation and soil carbon densities were 1.47 kg C/m2.and 9.17 kg C/m2. respectively, differing greatly in various regions affected by climate, vegetation, and soil types. They were generally higher in the warm and wet Southeast China and Southwest China than in the arid Northwest China; whereas vegetation carbon density was the highest in the warm Southeast China and Southwest China, soil carbon density was the highest in the cold Northeast China and southeastern fringe of the Qinghai-Tibetan Plateau. These spatial patterns are clearly correlated with variations in the climate that regulates plant growth and soil organic matter decomposition, and show that vegetation and soil carbon densities are controlled by different climatic factors.

关键词： carbon storage, vegetation, soil, China.

CHARACTERISTICS AND RATIONAL EXPLOITATION OF LAND resources IN XIZANG

在线全文

学校读者我要写书评

暂无评论

chinese geographical Science 1996年第4期6卷 321-331页

作者： Li Mingsen (Commission for Integrated Survey of natural resources,the {2., beijing 100101, PRC) Commission for Integrated Survey of natural resources the Chinese Academy of Sciences Beijing PRC

There is vast land in Xizang (Tibet), but the land suitable for agriculture is less and concentrated. There is a large quantity of land suitable for animal husbandry, but great differentiation in quality. The land suitable for forestry is in large quantity and high quality. The land in high, cold and dry region is very difficult for use. An of these chacteristics determine the Pedctive structure and scale and the distribution of agriculture, forestry and animal husbandry in Xizang. At present, the exploitation level of land resources in Xizang is low, the commodity production is backward and some of the land is in degradation. The exploitstion should be combined with the conservation of several kinds of land resources. Per unit pleduction of land staid be enhanced, the improvement of the grassland and the construction of artificial grassland should be carried out. They are the strategy and effective countermeasures for the improcement of economy, production conditions and the eco-environment in Xizang.

关键词： land resources productive potentiality Xizang land exploitation