海河水利Issue(7)：12-19,8.DOI:10.3969/j.issn.1004-7328.2026.07.003
贵州省喀斯特山区灌区作物耗水遥感解译研究
Remote Sensing Interpretation of Crop Water Consumption in Irrigation Areas of Karst Mountainous Regions in Guizhou Province
摘要
Abstract
To accurately grasp the crop water consumption patterns in irrigation areas of karst mountainous regions in Guizhou Province and promote efficient water resource utilization and sustainable agricultural development,based on NASA(National Aeronautics and Space Administration)remote sensing images and other data from 2021 to 2023,this paper adopts the flux decomposition method to interpret crop water consumption,and verifies and analyzes the interpretation results combined with evaporation data from typical meteorological stations.The results show that in terms of temporal distribution,crop water consumption exhibits obvious seasonal variation,reaching its peak in summer due to high temperatures and vigorous crop growth,with decadal water consumption of 30-50 mm;it drops to its lowest value in winter due to low temperatures and crop dormancy,with decadal water consumption less than 10 mm;interannual differences are mainly affected by precipitation fluctuations.In terms of spatial distribution,water consumption is relatively high in some areas of the south and east,with local areas exceeding 650 mm,corresponding to the distribution of rice-growing areas and high precipitation zones;low-value areas are locally below 250 mm,corresponding to dry farming areas,low precipitation zones,and karst landform areas;other areas have water consumption mainly concentrated at 400-500 mm.Terrain water retention capacity and differences in crop water demand coefficients(rice>flue-cured tobacco>corn)jointly drive the spatial differentiation of crop water consumption.Verification results show a high correlation between observed values and modeling results,and the interpretation results have reliable accuracy.The research results can provide reference for agricultural water resource management and crop water consumption monitoring in irrigation areas of Guizhou Province.关键词
喀斯特山区/灌区/作物耗水/遥感解译Key words
karst mountainous area/irrigation area/crop water consumption/remote sensing interpretation分类
建筑与水利引用本文复制引用
吴海宽,李长江,彭芸..贵州省喀斯特山区灌区作物耗水遥感解译研究[J].海河水利,2026,(7):12-19,8.基金项目
贵州省科技厅课题"基于人工智能的蔬菜变量水肥决策技术研究——以威宁高原蔬菜保供基地为例(黔科合支撑[2022]一般167)" （黔科合支撑[2022]一般167）
贵州省科技计划项目"农田水利智慧测控贵州省科技创新领军人才工作站(合同号:黔科合平台[2025]054)" （合同号:黔科合平台[2025]054）
贵州省科学技术厅项目"水工程安全贵州省科技创新领军人才工作站"(合同号:黔科合平台KXJZ[2024]026) （合同号:黔科合平台KXJZ[2024]026）
