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利用红松幼年时期对光照条件要求的可塑性,对低产次生阔叶林择伐改造更新红松,以便人工诱导成针阔混交林,对促进林木生长,提高林分生产力,保证红松造林成功等都有重要意义。我们在1982年对低产次生阔叶林择伐与皆伐改造更新的红松幼林气象效应及其幼树生长进行了初步观测,整理如下。一、观测场地与方法 (一) 观测场地。在桓仁县八里甸子公社大南沟大队(北纬41°13′,东经124°51′)尹家大坡的9年生红松幼林内,该林地地势平坦,西坡5～10°,土壤为棕色森林土,土层深20～40cm,原以怀槐和杨桦、为主的低产次生阔叶林,1973年
Utilizing the plasticity of korean pine in light conditions, the selective regeneration of low-yield secondary broad-leaved forests was renewed to facilitate the plantation of coniferous and broad-leaved mixed forests in order to promote the growth of forest trees, improve the stand productivity and ensure the success of Korean pine plantations And so on are of great significance. We conducted a preliminary survey on the meteorological effects and the growth of young saplings of the young Korean pine plantations that were under selective cutting and clear cutting transformation of low-yield secondary broad-leaved forest in 1982, and are summarized as follows. First, the observation site and methods (A) observation site. In the 9-year-old Pinus koraiensis forest of Yinjiabaipo in Daliangou Brigade (41 ° 13’N, 124 ° 51’E) in Huanren County, the Banyanggou Sub-Brigade of Bailian Sub-commune, the forest land is flat with a slope of 5 ~ 10 ° on the west slope, Brown forest soil, soil depth 20 ~ 40cm, the original Huaihua and Yang Cheng, mainly low-yield secondary broad-leaved forest, 1973