南宁树木园2013-2019年森林资源变化分析

Change of Forest Resources from 2013 to 2019 in Nanning Arboretum

为探究南宁树木园(园外)森林资源现状及其变化趋势,以2013森林资源二类调查、2019年森林资源规划设计调查数据为基础,对南宁树木园森林资源变化进行分析。结果表明:(1)从2013至2019年,园外林地面积增加了773.41 hm2,增长5.41%;活立木蓄积量增加了318071 m3,净增率24.28%;除经济灌木外,各主要树种的分布面积和蓄积均有提高。(2)在林分树种组成方面,以纯林为主,但2019年混交林面积较2013年扩大353.58 hm2,增长1531.1%。(3)乔木林单位面积蓄积提高了6.3%。分析结果可为南宁树木园森林资源保护发展与经营管理提供参考。

The current situation and change of forest resources in Nanning Arboretum were analyzed based on the survey data of forest resources planning and design in 2013 and 2019.The results showed that:i)From 2013 to 2019,the area of forestland outside the garden increased by 773.41 hm2,increasing 5.41%;Standing wood stock increased by 318,071 m3,a net increase of 24.28%The area and stock of all major tree species were increased except for economic shrubs;ii)the forest species composition was mainly pure forest,but the area of mixed forest increased by 353.58 hm2 in 2019 compared with 2013,an increase of 1531.1%;iii)the accumulation of arbor forest per unit area increased by 6.3%.The analysis results can provide reference for the protection,development and management of forest resources in Nanning arboretum.