摘要
运用SEBAL模型,结合MODIS数据和气象台站气象数据,反演出了2003年湖北江汉平原四湖地区蒸散的空间分布,通过将气象台站蒸发皿观测值与湖泊蒸散比较,得出了SEBAL模型计算蒸散的方法完全适合于土壤含水量大的四湖湿地;影响四湖地区蒸散差异的主要因子为土壤利用现状的差异,其中城镇蒸散最小,然后依次是旱地、林地、水田、养殖区,湖面蒸散最大;影响四湖地区蒸散大小的主要因素为地面温度,其次是净辐射,与植被覆盖指数无关。
Evapotranspiration spatial distribution from Four-lake wetland based on the MODIS and meteorology data was mapped by SEBAL model method in this paper.The similar results between the observed values from evaporation pan and calculated data from SEBAL model verified this method be suit for the studied wetland.The soil utilization was the main facor to cause the differences of evapotranspiration spatial distribution, in which the smallest evapotranspiration observed in city, then in dry land, paddy land, woodland, culture area and lake.The evapotranspiration was influenced mainly by the surface temperature and net radiation, and no NDVI impact was observed.
出处
《湖北农业科学》
北大核心
2010年第8期1973-1976,1992,共5页
Hubei Agricultural Sciences
关键词
四胡湿地
SEBAL模型
蒸散
遥感
Four-Lake wetland
SEBAL model
evapotranspiration
remote sensing
