Shrinkage and fragmentation of marshes in the West Songnen Plain, China, from 1954 to 2008 and its possible causes
Shrinkage and fragmentation of marshes in the West Songnen Plain, China, from 1954 to 2008 and its possible causes
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1954—2008年松嫩平原西部沼泽面积的萎缩、破碎化及其可能原因
DOI：
10.1016/j.jag.2010.10.003
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发表时间：
2011-06
影响因子：
7.5
通讯作者：
Chen Jing Ming
中科院分区：
文献类型：
--
作者：
Wang Zongming;Huang Ni;Luo Ling;Li Xiaoyan;Ren Chunying;Song Kaishan;Chen Jing Ming
在过去的几十年里，气候变化下的农业发展导致了松嫩平原西部沼泽的大量流失。利用历史地形图和遥感数据，分析了松嫩平原西部1954 - 2008年沼泽湿地萎缩破碎化过程及其可能原因。结果表明，同期松嫩平原西部沼泽地经历了相当大的萎缩和破碎。1954年沼泽地面积为6404 km 2，54年来减少了74%。湿地面积平均每年减少88 km 2。湿地斑块数量从1411个减少到514个，平均斑块面积从454公顷减少到320公顷。农田和盐渍化荒地是沼泽地转化的两种主要土地利用类型。同期，草地减少了54%，耕地增加了22%，盐渍化荒地扩大了612%。空气温度和干燥指数显着增加，发现在研究区域，沿着降水减少，从而影响沼泽系统通过改变水文制度。另一方面，随着沼泽地的缩小和破碎，人口、国内生产总值和牲畜数量大幅增加。政府政策变化在研究区域土地利用变化中起着关键作用。
Agricultural development under climatic variations has resulted in substantial loss of marshes in the West Songnen Plain in the past decades. In this paper, the shrinkage and fragmentation process of marshes and its possible causes in the West Songnen Plain from 1954 to 2008 were explored using historical topographic maps and remote sensing data. Results indicated that the West Songnen Plain underwent considerable shrinkage and fragmentation of marshes in that same period. Marshes occupied 6404km2in 1954, but this area has decreased by 74% in the past 54 years. The average annual decrease rate of marshes was 88km2per year. Meanwhile, the number of marsh patches decreased from 1411 to 514, and the mean patch size decreased from 454 to 320ha. Cropland and salinized wasteland were the two main land use types into which marshes were converted. During the same period, grassland decreased by 54%, cropland increased by 22%, and salinized wasteland expanded by 612%. A significant increase in air temperature and index of dryness was found in the study region, along with decreased precipitation, thereby affecting the marsh systems through the changing hydrological regimes. On the other hand, population, gross domestic product, and livestock number increased considerably as marshes shrank and became fragmented. Governmental policy changes played a key role in land use transformations in the study region.
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影响因子：
3.9
作者：
Gi-Chul Yi;D. Risley;M. Koneff;C. Davis
通讯作者：
Gi-Chul Yi;D. Risley;M. Koneff;C. Davis
影响因子：
3
作者：
Y. Zha;Yan-sui Liu;Xiangzheng Deng
通讯作者：
Y. Zha;Yan-sui Liu;Xiangzheng Deng
DOI：
10.4197/ear.20-1.9
发表时间：
2009-01-01
期刊：
Journal of King Abdulaziz University - Earth Sciences
影响因子：
--
作者：
Al-Ahmadi, F. S.;Hames, A. S.
通讯作者：
Hames, A. S.
DOI：
10.1016/s0959-3780(99)00175-2
发表时间：
1999-12
影响因子：
8.9
作者：
P. Verburg;T. Veldkamp;J. Bouma
通讯作者：
P. Verburg;T. Veldkamp;J. Bouma
影响因子：
3.4
作者：
Zongming Wang;Zhiming Liu;K. Song;B. Zhang;Sumei Zhang;Dianwei Liu;C. Ren;Fei Yang
通讯作者：
Zongming Wang;Zhiming Liu;K. Song;B. Zhang;Sumei Zhang;Dianwei Liu;C. Ren;Fei Yang