利用山影分析表现山区太阳辐射情况

Situation of Solar Radiation in Mountainous Areas by Hillshade Analysis

利用GIS的山影分析结果,采用数学方法处理,计算出一个到达地面的太阳辐射量受地形影响的因子,从而对按纬度分布的太阳辐射量进行校正,得出受地形影响后的到达地面的太阳辐射量,这一影响在山区十分明显,通过计算可以得到山区中位于不同位置所能得到的太阳辐射量的数值。

By using the GIS analysis result of hillshade,the factor（solar radiation dose arrives the land） which was affected by the landform was calculated by mathematical method.Therefore,solar radiation dose which was distributed according to latitude was revised.Solar radiation dose which reached land and affected by the landform was obtained.This impact was quite obvious in the mountainous areas.Data of solar radiation dose at different position in the mountainous areas were obtained by calculation.