气候变化领域集成服务门户(CCPortal): Identification of Actual Irrigated Areas in Tropical Regions Based on Remote Sensing Evapotranspiration

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DOI	10.3390/atmos15040492
	Identification of Actual Irrigated Areas in Tropical Regions Based on Remote Sensing Evapotranspiration
	Xu, Haowei; Duan, Hao; Li, Qiuju; Han, Chengxin
发表日期	2024
EISSN	2073-4433
起始页码	15
结束页码	4
卷号	15 期号:4
英文摘要	Amidst global climate change and unsustainable human exploitation of water resources, water has emerged as a critical factor constraining global agricultural food production and ecological environments. Particularly in agricultural powerhouses like China, irrigation water accounts for a significant portion of freshwater resource utilization. However, the inefficiency of irrigation water usage has become a weak link in water resource management. To better assess irrigation water efficiency, an accurate estimation of regional irrigated areas is urgently needed. This study proposes a method for identifying actual irrigated areas based on remote sensing-derived evapotranspiration (ET) to address the challenge of accurately interpreting irrigated areas in tropical regions. Using Yunnan Province's Yuanmou irrigation district as a case study, this research combined ground monitoring data and remote sensing data to identify actual irrigated areas through ET inversion and downscaling methods using the Penman-Monteith-Leuning (PML) model. In 2023, the total irrigated area interpreted from remote sensing in the study area was approximately 15,000 hm2, with a comparison against validation points revealing an extraction error of 16%. The small error indicates that this method can effectively enhance the reliability of monitoring actual irrigated areas, thus providing valuable data support for agricultural irrigation water management.
英文关键词	tropical regions; evapotranspiration; irrigated areas; PML model
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001210501400001
来源期刊	ATMOSPHERE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296072
作者单位	China Institute of Water Resources & Hydropower Research; China University of Geosciences; Lanzhou Jiaotong University
推荐引用方式 GB/T 7714	Xu, Haowei,Duan, Hao,Li, Qiuju,et al. Identification of Actual Irrigated Areas in Tropical Regions Based on Remote Sensing Evapotranspiration[J],2024,15(4).
APA	Xu, Haowei,Duan, Hao,Li, Qiuju,&Han, Chengxin.(2024).Identification of Actual Irrigated Areas in Tropical Regions Based on Remote Sensing Evapotranspiration.ATMOSPHERE,15(4).
MLA	Xu, Haowei,et al."Identification of Actual Irrigated Areas in Tropical Regions Based on Remote Sensing Evapotranspiration".ATMOSPHERE 15.4(2024).