| 基于GIS太阳直接辐射模型的研究 |
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| 引用本文： | 谢阳生,唐小明,黄水生.基于GIS太阳直接辐射模型的研究[J].林业科学研究,2003,16(1):8-12. |
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| 作者姓名： | 谢阳生 唐小明 黄水生 |
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| 作者单位： | 中国林业科学研究院资源信息研究所,北京,100091 |
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| 基金项目： | 国家948项目"INSAR自动生成DEM技术的引进"(99 4 25) |
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| 摘 要： | 地面所接收到的太阳直接辐射量是随地面的纬度,高程,坡度,坡向以及地形遮蔽等地形因子的变化而变化的。本文基于GIS技术,利用DEM获得地形因子,在GIS中建立了晴空太阳直接辐射模型。本模型的计算结果准确率达到90％,可应用于农业,林业,生物,生态等领域。
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| 关 键 词： | 太阳直接辐射模型 GIS DEM 太阳辐射 |
| 文章编号： | 1001-1498(2003)01-0008-05 |
| 收稿时间： | 7/4/2001 12:00:00 AM |
Studies on Modelling Direct Solar Radiation in a GIS Environment |
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| XIE Yang-sheng,TANG Xiao-ming and HUANG Shui-sheng.Studies on Modelling Direct Solar Radiation in a GIS Environment[J].Forest Research,2003,16(1):8-12. |
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| Authors: | XIE Yang-sheng TANG Xiao-ming and HUANG Shui-sheng |
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| Institution: | Research Institute of Forest Resource Information Techniques, CAF, Beijing100091, China;Research Institute of Forest Resource Information Techniques, CAF, Beijing100091, China;Research Institute of Forest Resource Information Techniques, CAF, Beijing100091, China |
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| Abstract: | Clear sky solar radiation varies in response to latitude,elevation, surface gradient (slope) and orientation (aspect), as well as position relative to neighbouring surfaces. This paper presents a model for estimating daily direct solar radiation. The model is based on technology and theory of GIS, using DEM to caculate slope, aspect and shading. Compared with measured radiation in the south of Ningxia Hui Autonomous Region, the results of the model is in a high degree of accuracy and can be used in the fields of forestry, ecology, biology and agriculture. |
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| Keywords: | solar radiation model GIS DEM |
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