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Attenuated cooling effects with increasing water-saving irrigation: Satellite evidence from Xinjiang, China

文献类型：期刊论文

作者Zhang, Chao4; Dong, Jinwei; Leng, Guoyong5; Doughty, Russell8; Zhang, Kun6,7; Han, Songjun1,3; Zhang, Geli2; Zhang, Xuezhen; Ge, Quansheng
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2023-04-15
卷号333页码:109397
关键词Water-saving irrigation Xinjiang Land surface temperature Water use Weakened cooling effect
ISSN号0168-1923
DOI10.1016/j.agrformet.2023.109397
文献子类Article
英文摘要The cooling effects of agricultural irrigation on land surface temperature (LST) are more evident in arid areas like Xinjiang Uygur Autonomous Region (Xinjiang) in northwest China. In the 21st century, irrigation practices improved, and the water-saving irrigation (WSI) area increased substantially from 1266 ha in 2000 to 2916 ha in 2019. However, it remains unclear how the cooling effects changed along with the increasing WSI area relative to traditional irrigation. Here we examine the changes in irrigation cooling effects on LST in Xinjiang from 2000 to 2020 at multi-spatiotemporal scales and analyze their relationship with irrigation water use (IWU). We find a significant decrease in daytime cooling effects (0.21 K/decade) but an increase in nighttime cooling (0.17 K/ decade) over stable croplands in Xinjiang, both of which significantly (P < 0.05) correlate to the decreased IWU. Seasonally, the weakened daytime cooling effect is most evident in late summer and early spring. Spatially, the decrease in the cooling effects is much more prominent in South Xinjiang (0.48 K/decade, p < 0.05) than in North Xinjiang, possibly due to their different WSI extents, intensities, and climate conditions (e.g., precipita-tion). Furthermore, we identify different cooling alleviation trends in two different agricultural systems: state farms with more advanced WSI measurements and conventional farms with fewer WSI infrastructures. We find that the state farms had a higher LST (Delta LST: 0.60 K) and vapor pressure deficit (Delta VPD: 0.013 kPa) than con-ventional farms in 2000, but that gap significantly decreased to 0.32 K and 0.002 kPa in 2020 due to increasing WSI in conventional farms, suggesting that the promotion of WSI dampened the irrigation cooling effects in Xinjiang. Our findings show that WSI lessens the cooling effect of irrigation, and we suggest that WSI-related effects on temperature should be considered in climate modeling and climate change scenarios.
WOS关键词LAND-COVER CHANGE ; USE EFFICIENCY ; SURFACE-TEMPERATURE ; RIVER-BASIN ; PATTERNS ; IMPACTS ; CLIMATE ; YIELD ; PRECIPITATION ; MANAGEMENT
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000965915400001
出版者ELSEVIER
源URL[http://ir.igsnrr.ac.cn/handle/311030/190501]  
专题陆地表层格局与模拟院重点实验室_外文论文
作者单位1.Univ Hong Kong, Sch Biol Sci, Hong Kong 999077, Peoples R China
2.Natl Ctr Efficient Irrigat Engn & Technol Res, Beijing 100038, Peoples R China
3.Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Univ Hong Kong, Dept Math, Hong Kong 999077, Peoples R China
7.Univ Oklahoma, Coll Atmospher & Geog Sci, GeoCarb Mission, Norman, OK 73019 USA
8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
9.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Chao,Dong, Jinwei,Leng, Guoyong,et al. Attenuated cooling effects with increasing water-saving irrigation: Satellite evidence from Xinjiang, China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2023,333:109397.
APA Zhang, Chao.,Dong, Jinwei.,Leng, Guoyong.,Doughty, Russell.,Zhang, Kun.,...&Ge, Quansheng.(2023).Attenuated cooling effects with increasing water-saving irrigation: Satellite evidence from Xinjiang, China.AGRICULTURAL AND FOREST METEOROLOGY,333,109397.
MLA Zhang, Chao,et al."Attenuated cooling effects with increasing water-saving irrigation: Satellite evidence from Xinjiang, China".AGRICULTURAL AND FOREST METEOROLOGY 333(2023):109397.

入库方式： OAI收割

来源：地理科学与资源研究所

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