2000—2021年广西森林资源数量与质量动态分析  

Dynamic Analysis on Forest Resource Quantity and Quality in Guangxi from 2000 to 2021

作　　者：庞正轰 于永辉 莫烔松 阳晶晶 韦应强 唐天 石驭天 PANG Zhenghong;YU Yonghui;MO Tongsong;YANG Jingjing;WEI Yingqiang;TANG Tian;SHI Yutian(Guangxi Forest Growers Association,Nanning 530002,Guangxi,China;Guangxi Zhuang Autonomous Region State-owned Gaofeng Forest Farm,Nanning 530001,Guangxi,China)

机构地区：[1]广西人工林种植行业协会,广西南宁530002 [2]广西壮族自治区国有高峰林场,广西南宁530001

出　　处：《桉树科技》2023年第4期63-72,共10页Eucalypt Science & Technology

基　　金：广西林业局2019年专项研究课题(2019-01)。

摘　　要：2000—2021年,广西森林资源数量发生了巨大变化。森林面积从981.91万hm~2增加到1486.37万hm~2,森林蓄积从37076万m^(3)增加到97822万m^(3),森林覆盖率从41.32%上升到62.55%,林地利用率从71.84%上升到92.11%,年均单位面积生长量从4.09 m^(3)·hm^(-2)上升到7.97 m^(3)·hm^(-2),平均单位面积蓄积量从48.80 m^(3)·hm^(-2)上升到84.25 m^(3)·hm^(-2)。森林年生长量从4018.17万m^(3)增加到9137.0万m^(3),年度木材产量从1637.06万m^(3)增加到3899.58万m^(3)。根据2000—2021年历次广西森林资源连续清查及监测结果,采用层次分析法从森林起源、森林结构、森林产能、森林健康、森林价值5个方面37项指标对森林资源进行了质量评价,结果表明2000—2021年森林质量从及格等级上升到良好等级。对森林质量提升原因进行了系统分析,认为政策驱动、市场引领、加大投入、科技支撑、科学管理是提升森林质量的重要因素。为提升广西森林资源质量和实现高质量发展,提出了调整林种结构、树种结构、龄组结构、加强幼林抚育管理、适当调减森林采伐量等对策措施。The forest resources of Guangxi underwent great changes during the period from 2000 to 2021.The forest area increased from 9.819 million hm2 to 14.864 million hm2.The forest stock volume increased from^(3)70.76 million m^(3) to 978.22 million m^(3).The forest covering rate increased from 41.32%to 62.55%.The forest land usage rate increased from 71.84%to 92.11%.The average annual growth rate increased from 4.09 m^(3)·hm^(−2) to 7.97 m^(3)·hm^(−2).The stock volume per hectare of forest land increased from 48.80 m^(3)·hm^(−2) to 84.25 m^(3)·hm^(−2).The annual growth of forests increased from 40.18 million m^(3) to 91.37 million m^(3),and the annual timber production increased from 16.37 million m^(3) to 38.99 million m^(3).Based on the results of continuous forest resource inventory in Guangxi from 2000 to 2021,the forest qualities were evaluated using the Analytic Hierarchy Process(AHP)that included 5 main aspects(forest origin,forest structure,forest productivity,forest health,forest value)and 37 sub-classification indicators.The results showed that the forest quality increased from passing grade to good grade from 2000 to 2021.The reasons for improving forest quality were systematically analyzed,and the important factors for improving forest quality were policy driven,market lead and increased investment along with strong,scientific and technological support which provided for scientific resource management.In order to further increase the forest resource quantity and promote forest quality in Guangxi,adjusting the structure of forest types,forest species structure,stand age group structure,tending of young stands,moderately reducing forest harvesting in the future were proposed.

关 键 词：森林资源数量 森林质量 动态分析 

分 类 号：S758.4[农业科学—森林经理学]