| 气象卫星监测土壤含水量模型及其应用 |
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| 引用本文： | 魏文秋,陈秀万.气象卫星监测土壤含水量模型及其应用[J].武汉大学学报(工学版),1993(6). |
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| 作者姓名： | 魏文秋 陈秀万 |
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| 作者单位： | 武汉水利电力大学河流工程系
(魏文秋)，武汉水利电力大学河流工程系(陈秀万) |
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| 摘 要： | 估测大面积近地表土壤含水量对指导灌溉、防洪排涝、旱情预报等具有很大价值。本文首先从理论上分析了地表土壤日温差、热惯量和土壤含水量三者的关系,探讨了由地表土壤日温差推求热惯量、再由热惯量推求土壤含水量的方法,建立了由气象卫星监测土壤含水量模型,通过实测资料验证,表明该模型具有较高精度。其次,将所建立的模型应用于实际土壤含水量的监测,做出了土壤含水量分布图。
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| 关 键 词： | 气象卫星 土壤含水量 遥感 土壤温度 |
A Model and Its Application of Soil Wtaer Content Monitoring by Meteorological Satellite |
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| Wei Wenqiu Chen Xiuwan.A Model and Its Application of Soil Wtaer Content Monitoring by Meteorological Satellite[J].Engineering Journal of Wuhan University,1993(6). |
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| Authors: | Wei Wenqiu Chen Xiuwan |
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| Abstract: | Estimating large area near-surface soil water content is of great practical value. In this paper, the relations among surface soil diurnal temperature difference, soil thermal inertia and soil water content are theoretically analysed. The methods of calculating soil water content from soil thermal inertia and the soil thermal inertia from surface soil diurnal temperature difference are researched. The model of soil water content monitoring by meteorological satellite is established and verified by the observated data. The near-surface soil water content map of Liaoning Province on AuguSt 11, 1988 is made by using this model for monitoring practical soil water content. |
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| Keywords: | meteorological satellite water content of soil remote sensing soil temperature |
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