永胜县2010—2015年国家森林抚育项目森林资源监测结果分析

2010—2015年6年间在森林抚育区设置监测、对照样地,分别于抚育前、抚育后第三年、抚育后第五年3个时段对林木株数、蓄积、树种组成、树种结构、林木材质等级、森林健康状况等进行定期观测,以评价森林抚育前后森林生长、森林结构和森林健康等变化状况。结果表明,经抚育的林分平均胸径较对照样地增长6.40%,树高增长6.65%,蓄积增长14.91%。抚育作业后,林分的水平结构和空间结构趋于合理,林木个体和林分整体健康水平明显提高,林木生长的营养空间增大,林木径向生长加速,木材质量提高,森林资源结构将更趋于合理。

Forest Resources Monitoring Results of National Forest Tending Project in Yongsheng County from 2010 to 2015

The monitoring and control plots were set up in the forest tending area from 2010 to 2015,and the tree number,volume,tree species composition and structure,timber grade and forest health status were regularly observed before tending,in the third year and the fifth year after tending,so as to evaluate the changes of forest growth,forest structure and forest health before and after tending.The results showed that the average DBH of the tending stand increased by 6.40%,the tree height increased by 6.65%,and the volume increased by 14.91%.After tending operation,the horizontal structure and spatial structure of the stand tended to be reasonable,the individual and overall health level of the stand were significantly improved,the nutrient space of the forest growth was increased,the radial growth of the forest was accelerated,the wood quality was improved,and the forest resource structure was more reasonable.