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Mapping wetland changes in China between 1978 and 2008
Niu Z. G.; Zhang H. Y.; Wang X. W.; Yao W. B.; Zhou D. M.; Zhao K. Y.; Zhao H.; Li N. N.; Huang H. B.; Li C. C.; Yang J.; Liu C. X.; Liu S.; Wang L.; Li Z.; Yang Z. Z.; Qiao F.; Zheng Y. M.; Chen Y. L.; Sheng Y. W.; Gao X. H.; Zhu W. H.; Wang W. Q.; Wang H.; Weng Y. L.; Zhuang D. F.; Liu J. Y.; Luo Z. C.; Cheng X.; Guo Z. Q.; Gong P.
出处Chinese Science Bulletin
2012
57
22
2813-2823
关键词Wetland Change Remote Sensing Global Change China Wetland Reserves
英文摘要Four wetland maps for all China have been produced, based on Landsat and CBERS-02B remote sensing data between 1978 and 2008 (1978, 1990, 2000 and 2008). These maps were mainly developed by manual interpretation and validated by substantial field investigation in 2009. Based on these maps, we analyzed the 2008 wetland distribution in China and discussed wetland changes and their drivers over the past 30 years. (i) There were about 324097 km(2) of wetlands in 2008, for which inland marshes or swamps were the most common wetland type (35%), with lakes (26%) second. Most of the wetlands were in Heilongjiang, Inner Mongolia, Qinghai and Tibet, occupying about 55% of the national wetland area. (ii) From 1978 to 2008, China's wetland area continually and significantly decreased, by about 33% based on changes in the wetland map. This was in sharp contrast to the increase in artificial wetlands, which increased by about 122%. Inland marshes accounted for the main loss of total wetlands from 1978 to 2000. From 2000 through 2008, riverine and lacustrine wetlands constituted the main wetland loss. Fortunately however, the rate of wetland loss decreased from 5523 to 831 km(2)/a. (iii) The change ratio of lost natural wetlands (including inland and coastal wetlands) to non-wetlands has decreased slightly over the past 30 years. From 1978 to 1990, nearly all natural wetlands (98%) lost were transformed into non-wetlands. However, the ratio declined to 86% from 1990 to 2000, and to 77% from 2000 to 2008. (iv) All Chinese provinces were divided into three groups according to patterns of wetland changes, which could relate to the driving forces of such changes. Tibet was completely different from other provinces, as it was one representative example in which there was a net wetland increase, because of global warming and decreased human activity since 1990. Increased economic development caused considerable wetland loss in most eastern provinces, and artificial wetlands increased.
收录类别SCI
语种英语
ISSN号1001-6538
文献类型SCI/SSCI论文
条目标识符http://ir.igsnrr.ac.cn/handle/311030/30800
专题历年回溯文献
推荐引用方式
GB/T 7714
Niu Z. G.,Zhang H. Y.,Wang X. W.,et al. Mapping wetland changes in China between 1978 and 2008. 2012.
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