基于遥感的蒸散与土地利用及主要地表参数的关系研究——以乌裕尔河下游为例Study on relationships among evapotranspiration,land use and main land surface parameters based on remote sensing——A case study over lower Wuyu'er basin
曾丽红,宋开山,张柏,杜嘉
摘要(Abstract):
以TM/ETM+影像为数据源,利用自动分类与目视解译相结合的方法提取了研究区1992~2001年共5个时相的土地利用信息;采用SEBAL模型估算影像过境当天的日蒸散量;最后对蒸散与土地利用变化、植被覆盖度及地表温度等地表参数之间的关系进行了相关性分析。结果表明:水体、湿地具有较高的日蒸散量,草地、旱地、林地次之,盐碱地、居民地最低。说明蒸散与地表温度、植被覆盖度等密切相关,土地利用变化是引起上述变化的主要驱动力之一。
关键词(KeyWords): 蒸散;土地利用;植被覆盖度;地表温度
基金项目(Foundation): 中国科学院知识创新工程领域前沿项目(C08Y46);; 国家自然科学基金项目(40871187)
作者(Author): 曾丽红,宋开山,张柏,杜嘉
DOI: 10.16251/j.cnki.1009-2307.2010.03.040
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