干旱区生态环境知识资源中心(Arid): Influence of mulched drip irrigation on landscape scale evapotranspiration from farmland in an arid area

Arid

DOI	10.1016/j.agwat.2019.105953
	Influence of mulched drip irrigation on landscape scale evapotranspiration from farmland in an arid area
	Zhang, Zhenyu 1,2,3; Li, Xiaoyu 1,2; Liu, Lijuan 1,2; Wang, Yugang 2; Li, Yan1,2
通讯作者	Li, Xiaoyu
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2020
卷号	230
英文摘要	Water-saving irrigation measures in arid areas affect evapotranspiration (ET) processes while conserving water. Mulched drip irrigation is considered the most efficient irrigation method because it distributes water uniformly in the soil, restricts deep percolation, and minimizes unproductive evaporation from soil. The effect of mulched drip irrigation on farmland ET during the growing season at a landscape scale remains unclear, despite being vital for developing optimal water resource management strategies in arid areas. To compare the effects of mulched drip irrigation and mulched border irrigation on ET, based on Landsat satellite imagery (2007-2009 with mulched border irrigation, and 2014-2016 with mulched drip irrigation), an improved Surface Energy Balance Algorithm for Land (SEBAL) model was used to evaluate ET for the two periods of an oasis at Sangong River Basin in the arid region of Northwest China. The results show that daily ET rates from farmland managed under mulched drip irrigation were on average 0.2-1 mm.d(-1) higher than under mulched border irrigation between June and August. Correspondingly, the net radiation flux (R) increased 73.32 W.m(-2) on average, and R was found to be the main determinant of the ET differences. Meanwhile, the average land surface albedo decreased by 20%, and negatively correlated with R (P < 0.05), indicating that the land surface albedo was the main factor affecting R. Furthermore, the Normalized Difference Vegetation Index (NDVI) exhibited a significant correlation with land surface albedo. More importantly, the Temperature-Vegetation Dryness Index (TVDI) under mulched drip irrigation was found to be approximately 21% lower than that under mulched border irrigation, indicating that the soil moisture conditions of the farmland under mulched drip irrigation was significantly improved compared to mulched border irrigation. Namely, less water stress resulted in better developed canopy of the crops, which in turn captured more radiation and thus increased ET. In the end, the observed increases in landscape-scale ET under mulched drip irrigation in arid area resulted from enhanced productivity of the crops due to lessened drought stress.
英文关键词	Mulched drip irrigation Mulched border irrigation Evapotranspiration SEBAL model Temperature-vegetation dryness index
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000525283000010
WOS关键词	WATER-USE EFFICIENCY ; ENERGY BALANCE ALGORITHM ; SEMIARID GRASSLAND ; SOIL-SALINITY ; METRIC MODELS ; COTTON FIELD ; RIVER-BASIN ; MAIZE ; VARIABILITY ; CLIMATE
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	中国科学院新疆生态与地理研究所 ; 南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313948
作者单位	1.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Zhejiang, Peoples R China; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Xinjiang, Peoples R China; 3.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhenyu,Li, Xiaoyu,Liu, Lijuan,et al. Influence of mulched drip irrigation on landscape scale evapotranspiration from farmland in an arid area[J]. 中国科学院新疆生态与地理研究所, 南京大学,2020,230.
APA	Zhang, Zhenyu,Li, Xiaoyu,Liu, Lijuan,Wang, Yugang,&Li, Yan.(2020).Influence of mulched drip irrigation on landscape scale evapotranspiration from farmland in an arid area.AGRICULTURAL WATER MANAGEMENT,230.
MLA	Zhang, Zhenyu,et al."Influence of mulched drip irrigation on landscape scale evapotranspiration from farmland in an arid area".AGRICULTURAL WATER MANAGEMENT 230(2020).