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在河北省林科所、河北林专实践队的指导帮助下,于今年七月间深入到我场造林、经营工作开展较好并已取得成效的查字作业区,对次生林改造和更新情况进行了重点调查总结。根据查字作业区改造更新类型所做的21块标准地调查材料,大致可分为四种类型:(1)阴浓厚土落叶松桦树混交林;(2)阴坡厚士桦树云杉混交林;(3)阳坡厚土落叶松柞树混交林;(4)阳坡厚土油松柞树混交林。
With the help of the Linke Institute of Hebei Province and the practice team of Hebei Forestry College, in July this year, they went deep into the field of investigation and operation of afforestation and management in our field and conducted a good and effective check-up operation area. The reconstruction and renewal of secondary forests were carried out The key survey concluded. According to 21 kinds of standard survey materials made by the investigation area for transformation and renovation, it can be divided into four types: (1) dense thick-layer larch birch mixed forest; (2) Mixed forest; (3) thick-skinned larch oak mixed forest on sunny slope; (4) thick oak pine-oak mixed forest on sunny slope.