NDLI: Safety analysis of water resources and eco-environment in Shiyang River Basin

Content Provider	Springer Nature Link
Author	Zhang, Ji shi Zhang, Yong qiu Pu, Rui feng Chen, Ren sheng Cheng, Zhong shan Wang, Ming quan
Copyright Year	2005
Abstract	The research on the present situation of soil and water development and utilization in Shiyang River Basin shows that water resources and eco-environment situation in this area are near the edge of collapse. Since the water crises occurred in the 1970s, problems caused by continuous decrease of water resources have been becoming serious year by year and eco-environment crisis occurred as a consequence. Up to now, 10 380ha of irrigated lands have been abandoned due to sand coverage and water shortage in the basin. Ground water was over exploded in Wuwei and Minqin because of water shortage. Ground water table in many places dropped under 5m (which is the ecology water table level), thus about 3000ha of Elaeagnus angustifolia forest come to dead and another 5800ha become feeble, and wind-drift sand near the oasis become alive. According to the current situation, if water utilization scope was not enlarged, a water transfer volume of 600×10$^{6}$m$^{3}$/a from other areas will be suitable to keep water resources and eco-environment safety in the basin, and also 70×10$^{6}$m$^{3}$/a will be left as spare water. Under this condition the water resources and eco-environment of the basin can reach the critical safety line of 2.032×10$^{9}$m$^{3}$/a; or if 180×10$^{6}$m$^{3}$ of water can be transferred from other areas, the water resources can reach the safety warning line of 1.732×10$^{9}$m$^{3}$/a.
Starting Page	238
Ending Page	244
Page Count	7
File Format	PDF
ISSN	10020063
Journal	Chinese Geographical Science
Volume Number	15
Issue Number	3
e-ISSN	1993064X
Language	English
Publisher	Science Press
Publisher Date	2005-01-01
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	water resources water resources safety Shiyang River Basin Geography (general)
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Geography, Planning and Development

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