Temporal and spatial variations of water resources constraint intensity on urbanization in the Shiyang River Basin, Chin
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Temporal and spatial variations of water resources constraint intensity on urbanization in the Shiyang River Basin, China Boyu Wang1,2 · Xiang Gao3 Received: 26 September 2019 / Accepted: 10 October 2020 © Springer Nature B.V. 2020
Abstract The Shiyang River Basin is located in the essential zone of Hexi Corridor in China, where the shortage of water resources has intensely impeded the development of the cities there for a long time. Based on the data related to water resources and urbanization system from 2005 to 2017, the paper regarded each county of Wuwei and Jinchang as the minimum research unit, and calculated their water resources constraint intensity (WRCI) every year through comprehensive measurement model, with the conclusion that: (1) In the past 13 years, the WRCI of all counties in the Shiyang River Basin had declined, among which Minqin had the most obvious decline, from an extreme constraint in 2005 to a strong constraint in 2017. The WRCI of Jinchuan was the most stable, fluctuating at a low level, while the decline of other counties was between the two. (2) The overall WRCI of the Shiyang River Basin decreased by about 0.2, from intense constraint to strong constraint, but still was under great pressure of water resources. (3) The WRCI in the Shiyang River Basin had always been "higher in the north than the south, and higher in the downstream area than upstream area". The WRCI of the counties in the upstream area such as Gulang and Tianzhu were relatively low, while WRCI of the counties in the downstream area such as Minqin and Yongchang were at a high level, reflecting the unbalanced spatial development of the basin, but the gap was gradually narrowing. In the future, all counties in the Shiyang River Basin still need to make efforts to tap the potential of utilization of water resources and improve urbanization level in economic and social aspects, so as to realize the goal of regional coordination and sustainable development. Keywords The Shiyang River Basin · Water resources constraint intensity (WRCI) · Urbanization · Comprehensive measurement model · Temporal and spatial variations
* Xiang Gao [email protected] Boyu Wang [email protected] 1
Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 73000, China
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B. Wang, X. Gao
1 Introduction Urbanization has always been the most distinctive feature of the development of human society, and it is also regarded as the best way to achieve the prosperity of economy and vigorous development. According to the location theory in human and economic geography, the development of a city or region is largely influenced and constrained by the local natural resources and environmental conditions. Typical constraint factors include water, land, climate and biological resources. Water resources refer to the natural fresh water that can be cons
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