1963午5—6月和1964年4—7月,我们在小兴安岭原始林区北京林学院红旗林场内,进行了此项研究。研究对象为塔头泥炭藓落叶松林、草类落叶松林、榛子蕨类红松林及真藓臭松林。对照点设在林中空旷地上。观测项目有总辐射、散射辐射、林内光斑、牛阴影和全阴影占林地面积的比例和辐射强度、苹类落叶松林冠层内太阳辐射的分布、林内光性质等。观测用仪器为苏式天空辐射麦,光性质用53型照度计加德制滤光片测定。于晴天及阴天,在当地时间6、8、10、12、14、 From May to June in 1963 and from April to July in 1964, we conducted this study in Hongqi Forest Farm, Beijing Forestry College, the original forest area of ​​Xiaoxing’anling. The research object is tartar moss Larch forest, grass larch forest, hazelnut fern korean pine and true moss stomatal. Control points set in the open forest. Observed projects are the total radiation, scattered radiation, light spot in the forest, bovine shadow and total shadow ratio of woodland area and radiation intensity, distribution of solar radiation inside the apple larch forest canopy, light properties within the forest. Observation instruments for the Soviet-style sky radiation wheat, the nature of the light with 53-type light meter plus German filter determination. On sunny days and cloudy days, local time 6,8,10,12,14,