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利用贵州省太阳辐射的连续观测数据,初步确定了光合有效辐射与太阳总辐射的比例因子,并基于气候学估算模型,估算了贵州省2001年的光合有效辐射量,分析了其时空变化特征。结果表明:1)贵州省光合有效辐射与太阳总辐射的比例系数为0.45;2)全省年光合有效辐射的平均值约为1 627.71 MJ/m~2,呈现自西向东、南、北3个方向递减的空间分布特征,与地势的变化大体一致;3)光合有效辐射的年内变化特征与气温变化较一致,7月份最高约为237.07 MJ/m~2,1月份最低约为78.52 MJ/m~2。
Based on the continuous observation data of solar radiation in Guizhou Province, the proportionality factors of photosynthetically active radiation and total solar radiation were preliminarily determined. Based on the climatological estimation model, the photosynthetic active radiation of Guizhou Province in 2001 was estimated and its temporal and spatial variation characteristics were analyzed. The results show that: 1) the coefficient of photosynthesis of solar radiation in Guizhou province is 0.45; 2) The average annual effective rate of photosynthesis of the province is about 1227.71 MJ / m ~ 2, showing the trend from west to east, south and north (3) The annual variation characteristics of photosynthetically active radiation are more consistent with the temperature changes, the highest in July is about 237.07 MJ / m 2, the lowest in January is about 78.52 MJ / m ~ 2.