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云南松(Pinus yunnanensis)又名“飞松”、“青松”。为亚热带针阔混交林的优势树种,其木材具有纤维长,细胞壁厚,纤维获得率高的优良特性,为滇中地区主要的森林类型,也是重要的用材林资源。受人为及外界因素影响,云南松林分群体稳定性下降、遗传品质变异而导致林分衰退。表现为林木生长速度减慢、干形扭曲、林分质量下降,甚至出现林木死亡的现象。对现实云南松林分生长衰退病因作调查研究,找出各影响因素之间的相关性,采取因病施治措施,提出抑制云南松林分生长退化策略。
Pinus yunnanensis also known as “fly loose ”, “pine ”. It is the dominant tree species in the subtropical coniferous and broad-leaved mixed forest. Its wood has the advantages of long fiber length, thick cell wall and high fiber yield. It is also the main forest type in central Yunnan and also an important timber resource. Affected by human factors and external factors, the stability of Pinus yunnanensis population decreased and the variation of genetic quality led to the decline of the stand. The performance of forest growth slowed down, dry shape distortion, decline in the quality of the stands, and even the phenomenon of forest deaths. To investigate the causes of the recession of the growth of Pinus yunnanensis in Yunnan Province, find out the relativity between the factors and take measures to control the growth of Pinus yunnanensis.