干旱区生态环境知识资源中心(Arid): Estimation of ET and Crop Water Productivity in a Semi-Arid Region Using a Large Aperture Scintillometer and Remote Sensing-Based SETMI Model

Arid

DOI	10.3390/w16030422
	Estimation of ET and Crop Water Productivity in a Semi-Arid Region Using a Large Aperture Scintillometer and Remote Sensing-Based SETMI Model
	Singh, Pragya; Sehgal, Vinay Kumar; Dhakar, Rajkumar; Neale, Christopher M. U.; Goncalves, Ivo Zution; Rani, Alka; Jha, Prakash Kumar; Das, Deb Kumar; Mukherjee, Joydeep; Khanna, Manoj; Dubey, Swatantra Kumar
通讯作者	Singh, P
来源期刊	WATER
EISSN	2073-4441
出版年	2024
卷号	16 期号:3
英文摘要	With the increasing water scarcity and the demand for sustainable agriculture, precise estimation of crop evapotranspiration (ET) is crucial for effective irrigation management, crop yield assessment, and equitable water distribution, particularly in semi-arid regions. In this study, a large aperture scintillometer (LAS) was used to validate the remote sensing-based ET model SETMI (Spatial Evapotranspiration Modeling Interface) in an irrigated maize-wheat cropping system in a semi-arid region at the ICAR-Indian Agricultural Research Institute, New Delhi. Results obtained by the SETMI model depicted modeled surface energy fluxes compared well with LAS field data, showing a very high R2 (0.83-0.95) and NRMSE (8-29%). The SETMI model performed better in the case of the maize crop than the wheat crop in field experiments. Further, the SETMI model was employed at the regional level using high-resolution Sentinel-2 to estimate the regional water productivity of wheat crops over a semi-arid region in India. The estimated regional, seasonal wheat actual ET mainly ranged between 101 mm and 325 mm. The regional wheat water productivity varied from 0.9 kg m-3 to 2.20 kg m-3. Our research reveals that the SETMI model can give reliable estimates of regional wheat water productivity by examining its spatial and temporal fluctuations and facilitating the creation of regional benchmark values.
英文关键词	evapotranspiration large aperture scintillometer maize SETMI semi-arid water productivity wheat
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:001159917300001
WOS关键词	ENERGY-BALANCE ; USE EFFICIENCY ; SPATIAL EVAPOTRANSPIRATION ; AGRICULTURE ; RADIATION ; DISTRICT ; BASIN ; PART ; FLUX
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405850
推荐引用方式 GB/T 7714	Singh, Pragya,Sehgal, Vinay Kumar,Dhakar, Rajkumar,et al. Estimation of ET and Crop Water Productivity in a Semi-Arid Region Using a Large Aperture Scintillometer and Remote Sensing-Based SETMI Model[J],2024,16(3).
APA	Singh, Pragya.,Sehgal, Vinay Kumar.,Dhakar, Rajkumar.,Neale, Christopher M. U..,Goncalves, Ivo Zution.,...&Dubey, Swatantra Kumar.(2024).Estimation of ET and Crop Water Productivity in a Semi-Arid Region Using a Large Aperture Scintillometer and Remote Sensing-Based SETMI Model.WATER,16(3).
MLA	Singh, Pragya,et al."Estimation of ET and Crop Water Productivity in a Semi-Arid Region Using a Large Aperture Scintillometer and Remote Sensing-Based SETMI Model".WATER 16.3(2024).