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森林的热量平衡是森林气候形成的物理基础,也是影响森林生态系统生产力的重要因素。为了探讨森林热量平衡各分量的特点与变化规律,我们于1960年至1965年,在黑龙江省小兴安岭林区红旗林场(北纬48°19′,东经129°29′)进行了此项研究工作。观测点设在坡度5°以下、地势较平坦的落叶松林、红松林和臭松林中。落叶松林(Larix gmelini Rupr.)林龄60年,平均高24米,平均胸径23.7厘米,郁闭度0.45。红松林(Pinus Koraiensis Sied et zucc)林龄180年,平均高25米,平均胸径42.5厘米,郁闭度0.71。臭松林(Abies nephrolepis Maxim)林龄45年,平均高8米,平均胸径13.2厘米,郁闭度0.87。观测用的标准地面积为20米×20米。对照点设在林区空旷地上的气象观测站内。
The heat balance of the forest is the physical basis for the formation of forest climate and also an important factor affecting the productivity of forest ecosystems. In order to investigate the characteristics and variation of various components of forest heat balance, we conducted this research work from 1960 to 1965 in Hongqi Forest Farm (48 ° 19 ’N, 129 ° 29’ E) in the Xiaoxing’an Mountains, Heilongjiang Province. The observation point is located in the slope of 5 ° below the flat terrain of larch forests, Korean pine and stump pine forest. Larch forest (Larix gmelini Rupr.) Age of 60 years, an average of 24 meters high, average diameter 23.7 cm, canopy density 0.45. Pinus koraiensis Sied et zucc was 180 years old and averagely 25 meters high with an average breast diameter of 42.5 cm and a canopy density of 0.71. The age of 45-year-old Abies nephrolepis Maxim was 8 meters on average with an average diameter at breast height of 13.2 cm and a canopy density of 0.87. The standard area for observation is 20 meters by 20 meters. The control point is located in the meteorological observation station in the open area of the forest.