珠江三角洲城市公益林资源分布差异  

Distribution Differences of Public Welfare Forest Resources in Urban Areas of the Pearl River Delta

作　　者：白念森 吴超 勾啸 崔嘉辰 李炜桢 贾朋 赵志刚 BAI Niansen;WU Chao;GOU Xiao;CUI Jiachen;LI Weizhen;JIA Peng;ZHAO Zhigang(Guangzhou Institute of Forestry and Landscape Architecture/Guangzhou Collaborative Innovation Center on Science-tech of Ecology and Landscape,Guangzhou,Guangdong 510405,China;Forestry Society of Guangzhou City,Guangzhou,Guangdong 510405,China)

机构地区：[1]广州市林业和园林科学研究院/广州市生态园林科技协同创新中心,广东广州510405 [2]广州市林学会,广东广州510405

出　　处：《林业与环境科学》2024年第5期130-136,共7页Forestry and Environmental Science

基　　金：广东省林业科技创新项目(2024KJCX001);广州市科技计划项目(2024B03J1325)。

摘　　要：为了探寻公益林森林生态系统有效管理的科学依据、生态文明建设与经济社会协调发展的经验,研究以广州市、深圳市、珠海市、佛山市、中山市、东莞市共6个珠三角城市为研究对象,基于2021年森林资源管理一张图中的公益林统计数据,从区域角度分析地区间、树种组成间的蓄积量构成差异和原因。结果表明,(1)珠三角六市的公益林面积共计100847.22 hm^(2),蓄积量7593435.84 m^(3),单位面积蓄积量为74.75 m^(3)·hm^(-2);(2)珠三角六市公益林面积、蓄积间差异较大,东莞市单位面积蓄积量达到88.59 m^(3)·hm^(-2),珠海市单位面积蓄积量最低,仅有54.40 m^(3)·hm^(-2),东莞市公益林的面积、蓄积量以及单位面积蓄积量均为六个市最高;(3)在公益林优势树种蓄积量方面,阔叶混交林面积和蓄积量均最高,速生相思单位面积蓄积量最高,达到121.11 m^(3)·hm^(-2),人工纯林表现出较高的生产力,以34%的公益林面积,提供了48%的蓄积量;(4)公益林蓄积与其立地质量、经营水平和混交林的树种组成等有关。结论指出,珠三角六市森林质量提升空间大,需优化公益林树种、林种结构,加强森林经营技术和模式研究,注重树种适应性与立地质量匹配,实现经济与生态文明协同发展。To explore the scientific basis for the effective management of public welfare forests and the experiences of coordinated development between ecological civilization and socio-economic growth,this study takes Guangzhou,Shenzhen,Zhuhai,Foshan,Zhongshan,and Dongguan as the research objects.Based on the statistical data of public welfare forests from the 2021 forest resource management map,the differences and cau ses of volume composition between regions and tree species composition were analyzed from a regional perspective.The results showed that(1)the total area of public welfare forests in the six cities of the Pearl River Delta was 100847.22 hm^(2),the total volume was 7593435.84 m^(3),and the volume per unit area was 74.75 m^(3)·hm^(-2).(2)There were significant differences in the area and volume of public welfare forests among the six cities of the Pearl River Delta.The volume per unit area in Dongguan reached 88.59 m^(3)·hm^(-2),and the volume per unit area in Zhuhai was the lowest,only 54.40 m^(3)·hm^(-2).Dongguan has the largest area,volume,and volume per unit area of public welfare forests among the six cities.(3)In terms of the volume of dominant tree species in public welfare forests,the area and volume of broad-leaved mixed forests were the largest,and the volume per unit area of fast-growing Acacia was the highest,reaching 121.11 m^(3)·hm^(-2).Artificial pure forests showed higher productivity,with 34%of the public welfare forest area,providing 48%of the stock volume.(4)The volume of public welfare forests is related to site quality,management level,and the composition of tree species of mixed forests.The conclusion points out that there is a large space for forest quality improvement in the six cities of the Pearl River Delta.It is necessary to optimize the tree species and forest type structure of public welfare forests,strengthen the research on forest management techniques and models,focus on the adaptability of tree species to site quality,and realize the coordinated development of the economy

关 键 词：珠三角地区 公益林 蓄积量 树种结构 

分 类 号：S757.2[农业科学—森林经理学]