干旱区生态环境知识资源中心(Arid): Comparison of Differences in Actual Cropland Evapotranspiration under Two Irrigation Methods Using Satellite-Based Model

Arid

DOI	10.3390/rs16010175
	Comparison of Differences in Actual Cropland Evapotranspiration under Two Irrigation Methods Using Satellite-Based Model
	Liu, Yi; Ortega-Farias, Samuel; Fan, Yunfei; Hou, Yu; Wang, Sufen; Yang, Weicai; Li, Sien; Tian, Fei
通讯作者	Wang, SF
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2024
卷号	16 期号:1
英文摘要	Remote sensing technology is widely used to obtain evapotranspiration (ETa), but whether it can distinguish the differences in farmland energy balance components and ETa under different irrigation methods has not been studied. We used Landsat 8 data as the primary dataset to drive the METRIC model and inverted the surface parameters and ETa of the Shiyang River Basin from 2014 to 2018. After improving the METRIC model using Ta obtained by the regression method instead of interpolation to calculate the net radiation flux (Rn), R2 was improved from 0.45 to 0.53, and the RMSE was reduced from 61 W/m2 to 51 W/m2. The ETa estimation results on satellite overpass days performed well, with R2 equal to 0.93 and RMSE equal to 0.48 mm when compared with the Eddy covariance method (EC) observations. Subsequently, the different growth stages and daily average ETa estimates of maize were compared with three observations (water balance, WB; Bowen ratio and energy balance method, BREB; and EC). The daily estimates of ETa correlate well with the observations of BREB (R2BI = 0.82, R2DI = 0.92; RMSEBI = 0.46 mm/day, RMSEDI = 0.32 mm/day) and EC (R2BI = 0.85, R2DI = 0.92; RMSEBI = 0.45 mm/day, RMSEDI = 0.34 mm/day), and the estimation for drip irrigation was found to be better than for border irrigation. The total accuracy of the ETa estimation on the five-year overpass day of maize farmland reached R2 = 0.93 and RMSE = 0.48 mm. With sufficient remote sensing data, the 4-year average ETa of maize was 31 mm lower for DI than for BI, and the mean value of ETa obtained from the three observation methods was 40 mm. The METRIC model can be used to distinguish ETa differences between the two irrigation methods in maize farmlands.
英文关键词	Landsat 8 METRIC model cropland evapotranspiration irrigation method
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001140502000001
WOS关键词	SURFACE-ENERGY BALANCE ; WATER PRODUCTIVITY ; DRIP IRRIGATION ; METRIC MODELS ; POTENTIAL EVAPOTRANSPIRATION ; MAPPING EVAPOTRANSPIRATION ; ARID REGIONS ; SAVE WATER ; LANDSAT 8 ; EVAPORATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405267
推荐引用方式 GB/T 7714	Liu, Yi,Ortega-Farias, Samuel,Fan, Yunfei,et al. Comparison of Differences in Actual Cropland Evapotranspiration under Two Irrigation Methods Using Satellite-Based Model[J],2024,16(1).
APA	Liu, Yi.,Ortega-Farias, Samuel.,Fan, Yunfei.,Hou, Yu.,Wang, Sufen.,...&Tian, Fei.(2024).Comparison of Differences in Actual Cropland Evapotranspiration under Two Irrigation Methods Using Satellite-Based Model.REMOTE SENSING,16(1).
MLA	Liu, Yi,et al."Comparison of Differences in Actual Cropland Evapotranspiration under Two Irrigation Methods Using Satellite-Based Model".REMOTE SENSING 16.1(2024).