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Article

Assessing the Spatial Pattern of Irrigation Demand under Climate Change in Arid Area

1
College of Water Conservancy, Yunnan Agricultural University, Kunming 650201, China
2
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
3
College of Agricultural Engineering, Hohai University, Nanjing 210098, China
*
Author to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2020, 9(9), 506; https://doi.org/10.3390/ijgi9090506
Received: 21 July 2020 / Revised: 16 August 2020 / Accepted: 19 August 2020 / Published: 23 August 2020
Studying the pattern of agricultural water demand under climate change has great significance for the regional water resources management, especially in arid areas. In this study, the future pattern of the irrigation demand in Hotan Oasis in Xinjiang Uygur Autonomous Region in Northwest China, including Hotan City, Hotan County, Moyu County and Luopu County, was assessed based on the general circulation models (GCMs) and the Surface Energy Balance System model (SEBS). Six different scenarios were used based on the GCMs of BCC_CSM1.1, HadGEM2-ES and MIROC-ESM-CHEM under the Representative Concentration Pathway (RCP) 4.5 and RCP 8.5. The results showed that the method integrating the GCMs and SEBS to predict the spatial pattern was useful. The irrigation demand of Hotan Oasis will increase in 2021–2040. The annual irrigation demand of Hotan City is higher, with 923.2 and 936.2 mm/a in 2021–2030 and 2031–2040, respectively. The other three regions (Hotan County, Moyu County and Luopu County) are lower in the six scenarios. The annual irrigation demand showed a spatial pattern of high in the middle, low in the northwest and southeast under the six scenarios in 2021–2040. The study can provide useful suggestions on the water resources allocation in different regions to protect water resources security in arid areas. View Full-Text
Keywords: spatial pattern; irrigation demand; SEBS model; climate change; hotan oasis spatial pattern; irrigation demand; SEBS model; climate change; hotan oasis
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MDPI and ACS Style

Wang, L.; Wang, S.; Zhang, L.; Salahou, M.K.; Jiao, X.; Sang, H. Assessing the Spatial Pattern of Irrigation Demand under Climate Change in Arid Area. ISPRS Int. J. Geo-Inf. 2020, 9, 506. https://doi.org/10.3390/ijgi9090506

AMA Style

Wang L, Wang S, Zhang L, Salahou MK, Jiao X, Sang H. Assessing the Spatial Pattern of Irrigation Demand under Climate Change in Arid Area. ISPRS International Journal of Geo-Information. 2020; 9(9):506. https://doi.org/10.3390/ijgi9090506

Chicago/Turabian Style

Wang, Liping, Shufang Wang, Liudong Zhang, Mohamed K. Salahou, Xiyun Jiao, and Honghui Sang. 2020. "Assessing the Spatial Pattern of Irrigation Demand under Climate Change in Arid Area" ISPRS International Journal of Geo-Information 9, no. 9: 506. https://doi.org/10.3390/ijgi9090506

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