Assessment of Future Water Yield and Water Purification Services in Data Scarce Region of Northwest China

Xu Yang, Ruishan Chen, Guangxing Ji, Chao Wang, Yuanda Yang and Jianhua Xu
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Xu Yang: Institute of Geographical Sciences, Henan Academy of Sciences, Zhengzhou 450052, China
Ruishan Chen: School of Design, Shanghai Jiaotong University, Shanghai 200240, China
Guangxing Ji: The College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450002, China
Chao Wang: Institute of Geographical Sciences, Henan Academy of Sciences, Zhengzhou 450052, China
Yuanda Yang: The College of Resources and Environment, Henan University of Economics and Law, Zhengzhou 450046, China
Jianhua Xu: Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China

IJERPH, 2021, vol. 18, issue 17, 1-17

Abstract: Water shortage and pollution have become prominent in the arid regions of northwest China, seriously affecting human survival and sustainable development. The Bosten Lake basin has been considered as an example of an arid region in northwest China, and the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model has been used to quantitatively evaluate the future water yield and water purification services for four representative concentration pathways (RCP) scenarios. The results show that for the four RCP scenarios, the annual average precipitation in 2020–2050 decreases compared to that in 1985–2015; the area of cultivated land and unused land decreases, and the area of other land-use types increases from 2015 to 2050. The water yield service reduces, while the water purification service increases from 2015 to 2050 in the Bosten Lake basin. In 2050, the water yield and water purification services are the best for the RCP6.0 scenario, and are the worse for the RCP4.5 scenario and RCP8.5 scenario, respectively. The distribution of the water yield and water purification services show a gradual decline from northwest to southeast.

Keywords: water yield service; water purification service; RCP scenarios; data-scarce region; northwest China; arid area (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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