Human-induced long-term changes in the lakes the Jianghan Plain, Central   Yangtze

CORC > 北京大学 > 城市与环境学院

	Human-induced long-term changes in the lakes the Jianghan Plain, Central Yangtze
	Fang, JY ; Rao, S ; Zhao, SQ
刊名	frontiers in ecology and the environment
	2005
关键词	WATER THREATS IMPACT STATE
英文摘要	The Jianghan Plain, located in the Central Yangtze area of China, is famous for its freshwater lakes, but these have undergone dramatic changes in area and number as a result of increasing human activity. We analyze the changes in lakes with an area >= 1 km(2) from the 1950s to 1998, using historical land-cover information and remote sensing data. The changes showed two distinct periods: the 1950s-1978 and 1978-1998. During the former period, the number of lakes fell from 414 to 250 (-39.6%) and total area decreased from 3885.4 km(2) to 1839.1 km(2) (-52.7%). During the latter period, the number of lakes rose, from 250 to 258 (+3.2%), while the area covered increased from 1839.1 km(2) to 2144.4 km(2) (+16.6%). The rapid fall in numbers of lakes from the 1950s to 1978 was largely attributed to extensive impoldering (land reclamation through draining techniques), resulting in substantial negative ecological consequences, such as increased flooding and a decline in biodiversity. In contrast, the increase in lake numbers and area from 1978 to 1998 was mainly due to the implementation of government policy prohibiting impoldering along the Yangtze River, and the return of inundated arable lands for aquaculture by local people.; Ecology; Environmental Sciences; SCI(E); 0; ARTICLE; 4; 186-192; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/399461]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Fang, JY,Rao, S,Zhao, SQ. Human-induced long-term changes in the lakes the Jianghan Plain, Central Yangtze[J]. frontiers in ecology and the environment,2005.
APA	Fang, JY,Rao, S,&Zhao, SQ.(2005).Human-induced long-term changes in the lakes the Jianghan Plain, Central Yangtze.frontiers in ecology and the environment.
MLA	Fang, JY,et al."Human-induced long-term changes in the lakes the Jianghan Plain, Central Yangtze".frontiers in ecology and the environment (2005).