文献类型：期刊文献

英文题名：Desertification assessment in China: An overview

作者：Yang X.[1] Zhang K.[2] Jia B.[1] Ci L.[1]

通信作者：Ci, L[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China;[2]Beijing Forest Univ, Chinese Training Ctr Desertificat Combating, Beijing 100083, Peoples R China

年份：2005

卷号：63

期号：2

起止页码：517-531

外文期刊名：JOURNAL OF ARID ENVIRONMENTS

收录：;Scopus(收录号：2-s2.0-22144451882);WOS:【SCI-EXPANDED(收录号:WOS:000231431400011)】；

基金：In the past 20 years, desertification assessment in China has laid the foundation for further scientific study. The assessment conducted by CCICCD provided background information for undertaking desertification control and initiating Western development strategies. Limited by the political system and intricate physical conditions, however, desertification assessment continues to be controlled by a top–down approach. Institutions play very important roles and assessment results are only available to academic researchers and government decision-makers. Despite the newly enacted Sand Control Law, local governments or institutions continue to be in charge of desertification monitoring and assessment, while local farmers and herders, who suffer from desertification effects and implemented desertification controls, are not mentioned in the law ( SAF, 2001 ). Future assessment should include a participatory-based hierarchical framework and an early warning system for desertification. The authors gratefully acknowledge two anonymous reviewers for their helpful comments. This paper was funded by the Major Project of National Natural Science Foundation of China (No. 39990490) and the Project of National Natural Science Foundation of China (No. 30171205).

语种：英文

外文关键词：state-of-the-art desertification assessment; assessment baseline and indicators; remotely sensed data sources; China

摘要：Desertification, land degradation in arid, semi-arid, and dry sub-humid regions, is a global environmental problem. Accurate assessment of the status, change, and trend of desertification will be instrumental in developing global actions to prevent and eradicate the problem. As one of the most seriously affected countries, China has made great efforts to combat desertification. Although improvements have been made in some areas, degradation continues to expand and intensify throughout the entire country. Further land degradation assessments, such as assessments made by the Chinese Committee for Implementing UN Convention to Combat Desertification (CCICCD), will be necessary to ensure successful decision-making, to combat increasing desertification, and to implement Western strategies. This paper overviews the state-of-the-art desertification assessments on both the national and local levels. Also, two major problems facing the assessment of degradation-the uncertainty of baseline assessments and indictor systems and the misuse of remotely sensed data sources-are presented along with suggestions for possible solutions to these problems. (c) 2005 Published by Elsevier Ltd.