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基于光能利用效率的区域蒸散量反演模型——以玉米种植区为例

DOI: 10.6046/gtzyyg.2013.03.03, PP. 14-19

Keywords: 内蒙古,研究区域

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Abstract:

以内蒙古河套地区解放闸灌域为研究区域,以实测生物量与土壤含水量及其关系方程为研究基础,建立了基于光能利用效率(radiationuseefficiency,RUE)的区域蒸散量反演模型;以陆面能量平衡(surfaceenergybalancealgorithmforland,SEBAL)模型为参考,对反演的同一时期的区域蒸散量进行对比分析。结果表明:RUE与SEBAL模型反演的区域蒸散量在空间分布和纹理特征方面具有相似性且相关性较高,决定系数高于农业技术推广支持系统(decisionsupportsystemforagrotechnologytransfer,DSSAT)与SEBAL的;基于RUE建立的区域蒸散量反演模型能够较好地反映区域蒸散量,在监测区植被(或作物)单一的前提下,是一种有效方法。

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