气候变化领域集成服务门户(CCPortal): Land use history and status of land desertification in the Heihe River basin

CCPortal

DOI	10.1007/s11069-009-9429-5
	Land use history and status of land desertification in the Heihe River basin
	Liu Wei; Cao Shengkui; Xi Haiyang; Feng Qi
发表日期	2010
ISSN	0921-030X
EISSN	1573-0840
卷号	53 期号:2
英文摘要	An analysis, over historical times, of the influence of natural factors such as climate, geological activity, existing landforms, and the activity of aeolian sands on the desertification of oases and other lands in the Heihe River basin of northwestern China revealed that desertification occurred more or less quickly according to whether the prevailing climate was cold or warm, respectively. In the 1990s, the area of desertified lands in the lower reaches of the Heihe River (Ejin region) was 29.1% greater than in the mid 1980s. However, the rate of desertification in the middle reaches of the Heihe River basin was relatively slower, only 9.4% from 1949 to 1990 (or 0.27% per year). Since 1990, the rate of desertification has been stable. By 2000, the total area of land desertification in the mid to lower reaches of the Heihe River basin was 13,508.4 km(2), or 11.8% of the region monitored. Of the total land desertification area, the regions of Linze, Gaotai, Sunan, Jiuquan, Jia Yuguan, and Jinta accounted for 1.70, 1.71, 1.43, 0.85, 0.28, and 9.39%, respectively, whereas the Ejin region's 11,434.64 km(2) accounted for 84.65%, indicating that land desertification in the lower Heihe River basin was particularly severe. The causes responsible for the occurrence and development of land desertification in the Heihe River basin were analyzed.
关键词	Heihe River basin Land desertification in historical period Modern land desertification Origin analysis
学科领域	Geology; Meteorology & Atmospheric Sciences; Water Resources
语种	英语
WOS研究方向	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
来源期刊	NATURAL HAZARDS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111606
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu Wei,Cao Shengkui,Xi Haiyang,et al. Land use history and status of land desertification in the Heihe River basin[J]. 中国科学院西北生态环境资源研究院,2010,53(2).
APA	Liu Wei,Cao Shengkui,Xi Haiyang,&Feng Qi.(2010).Land use history and status of land desertification in the Heihe River basin.NATURAL HAZARDS,53(2).
MLA	Liu Wei,et al."Land use history and status of land desertification in the Heihe River basin".NATURAL HAZARDS 53.2(2010).