红塔山自然保护区云南松火烧迹地天然更新调查研究  

Natural Regeneration of Pinus yunnanensis in Burned Area of Hongtashan Nature Reserve

作　　者：高源 陆俊宇 杨兴明 GAO Yuan;LU Junyu;YANG Xingming(Yuxi Administration of Hongtashan Nature Reserve,Yuxi,Yunnan 653100,China)

机构地区：[1]玉溪市红塔山自然保护区管护局,云南玉溪653100

出　　处：《林业调查规划》2020年第4期105-108,共4页Forest Inventory and Planning

摘　　要：采用标准样地法对红塔山自然保护区东风水库北岸王美喜大山、大河顶尖山片区两块火烧迹地云南松天然更新情况进行调查,结果显示:东风水库北岸王美喜大山林火发生5年后云南松天然更新保存密度平均为2554株/hm^2,更新幼树均高为89.13 cm;大河顶尖山火烧迹地发生林火8年后云南松天然更新保存密度平均为4138株/hm^2,更新幼树均高为160.28 cm。分析发现:火灾后云南松天然更新呈不规则分布,不同坡位、火灾前林分郁闭度、林龄对更新株数和幼树树高存在影响。提出对于火灾发生前郁闭度达到0.4以上的中龄林或接近中龄以上的林分,不必再进行人工更新造林;蹲苗期结束后,适当补植阔叶树进行混交,以提高林分抗病虫能力及综合功能,进行适当的中耕除草,以促进幼树生长;加强封山管理,避免人畜破坏幼苗等建议。The natural regeneration of Pinus yunnanensis in two burning areas of Wangmeixi Mountain on the North Bank of Dongfeng Reservoir and Daheding Mountain in Hongtashan Nature Reserve was investigated by sample plot method.The results showed that the average preservation density of Pinus yunnanensis natural regeneration was 2554 trees/hm^2 and the average height of young trees was 89.13 cm five years after the occurrence of forest fire in Wangmeixi Mountain,while the average preservation density of Pinus yunnanensis natural regeneration was 4138 trees/hm^2 and the average height of young trees was 160.28 cm eight years after the occurrence of forest fire in Daheding Mountain.The analysis showed that the natural regeneration of Pinus yunnanensis was irregular distribution after fire,and different slope position,forest canopy density and forest age affected the number of regeneration trees and height of young trees.This paper suggested that the mid-aged forest with the canopy density of more than 0.4 or the near mid-aged forest were no need for reforestation,after the end of restraining the growth of seedlings,the broad-leaved trees should be planted properly to improve the disease and insect resistance ability and comprehensive function of the forest,the appropriate intertillage and weeding should be carried out to promote the growth of the young trees,and the mountain closure management should be strengthened to avoid the damage of the seedlings by human and livestock.

关 键 词：云南松 火烧迹地 天然更新 红塔山自然保护区 

分 类 号：S791.257[农业科学—林木遗传育种] S754.1[农业科学—林学]