干旱区生态环境知识资源中心(Arid): Impact of land use change on water resource allocation in the middle reaches of the Heihe River Basin in northwestern China

Arid

	Impact of land use change on water resource allocation in the middle reaches of the Heihe River Basin in northwestern China
	Nian Yanyun; Li Xin; Zhou Jian; Hu Xiaoli
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2014
卷号	6 期号:3 页码:273-286
英文摘要	In recent decades, China has been experiencing rapid economic development, population growth and urbanization. These processes have stressed the shortages of water resources in China, especially in the arid regions of northwestern China. In order to sustain the expanding cropland, people increased groundwater exploitation in these regions. The purpose of this study was to quantitatively analyze the changes in land use and water resources, and their relationship in the middle reaches of the Heihe River Basin, a typical inland river basin in northwest China. The data of land use change were interpreted using aerial photographs (1965) and Landsat TM images (1986 and 2007). The data of irrigation water volume in the irrigation districts were spatialized in the middle reaches of the Heihe River Basin. The spatial variation of the groundwater depth was interpolated using the geostatistical method. The results showed that the cultivated cropland area along oasis fringe increased by 15.38% and 43.60% during the periods 1965-1986 and 1986-2007, respectively. Surface water amount for irrigation had almost doubled from 1956 to 2010. The decrease of grassland area mainly occurred at the alluvial fan in front of the Qilian Mountains, with 36.47% during 1965-1986 and 38.56% during 1986-2007, respectively. The groundwater depth in front of the mountain constantly increased from 1986 to 2007. We found that the overuse of surface water and overexploitation of groundwater had direct consequences on the natural environments. We suggests that the efficiency of surface water resources use among different irrigation districts needs to be improved, which will significantly ease the conflicts between increasing water demand for irrigation and a shortage of water resources in the middle reaches of the Heihe River Basin.
英文关键词	watershed management land use groundwater irrigation arid region Heihe River Basin
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:5116154
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335343
作者单位	Nian Yanyun, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Li Xin, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Zhou Jian, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Hu Xiaoli, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Nian Yanyun,Li Xin,Zhou Jian,et al. Impact of land use change on water resource allocation in the middle reaches of the Heihe River Basin in northwestern China[J],2014,6(3):273-286.
APA	Nian Yanyun,Li Xin,Zhou Jian,&Hu Xiaoli.(2014).Impact of land use change on water resource allocation in the middle reaches of the Heihe River Basin in northwestern China.Journal of Arid Land,6(3),273-286.
MLA	Nian Yanyun,et al."Impact of land use change on water resource allocation in the middle reaches of the Heihe River Basin in northwestern China".Journal of Arid Land 6.3(2014):273-286.