广西13家国有林场桉树资源变化分析  

Analysis on the Eucalypt Forest Resource in 13 Guangxi State-owned Forest Farms

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

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

出　　处：《桉树科技》2024年第1期64-76,共13页Eucalypt Science & Technology

基　　金：广西自筹经费林业科技项目(桂林科研﹝2022ZC﹞第32号)。

摘　　要：为实现桉树资源高质量发展,根据2003—2020年森林资源调查数据,对广西13家国有林场(高峰、七坡、树木园、东门、派阳山、钦廉、博白、六万、维都、三门江、黄冕、大桂山、雅长)桉树资源变化情况进行分析。结果表明:2003—2020年,桉树人工林面积从57782.4 hm^(2)增加到100126.75 hm^(2),蓄积从1631700 m^(3)增加到8556100 m^(3);单位面积蓄积量从21.66 m^(3)•hm^(−2)上升到85.5 m^(3)•hm^(−2);单位面积年均生长量从6.1 m^(3)•hm^(−2)•年^(−1)上升到24.7 m^(3)•hm^(−2)•年^(−1)。至2020年,在13家林场中场内桉树人工林面积达10000 hm^(2)以上有3家,5000~10000 hm^(2)的有6家,5000 hm^(2)以下的有4家;桉树人工林蓄积量1000000m^(3)以上的有2家,500000~1000000m^(3)的有7家,500000 m^(3)以下的有4家;单位面积蓄积量100 m^(3)•hm^(−2)•年^(−1)以上的有6家,80~100 m^(3)•hm^(−2)•年^(−1)的有3家,80 m^(3)•hm^(−2)•年^(−1)以下的有4家;单位面积年均生长量超过30.0 m^(3)•hm^(−2)的有1家,年均生长量25~30 m^(3)•hm^(−2)•年^(−1)的有4家,年均生长量20~24.9 m^(3)•hm^(−2)•年^(−1)的有6家,年均生长量小于20.0 m^(3)•hm^(−2)•年^(−1)的有2家。针对当前桉树资源经营管理中存在的突出问题,提出加强抚育管理、科学合理调整主伐年龄、加强自然灾害防控等建议。In order to improve the high-quality development of eucalypt plantations,data from forest resource surveys carried out from 2003 to 2020 was analysed from 13 Guangxi state-owned forest farms(Gaofeng,Qipo,Shumuyuan,Dongmen,Paiyangshan,Qinlian,Bobai,Liuwan,Weidu,Sanmenjiang,Huangmian,Daguishan,Yachang).The results showed that the total eucalypt plantation resource of these 13 forest farms increased from 57782.4 in 2003 to 100126.75 hm^(2)in 2020;whilst forest stock volume increased from 1631700 to 8556100 m^(3),per unit area stock volume increased from 21.66 to 85.5 m^(3)•hm^(−2)and per unit area growth increased from 6.1 to 24.7 m^(3)•hm^(−2)per year over the same period.Based on the 2020 data,the 13 forest farms could be divided into 3 classes by eucalypt plantation scale as follows:3 forest farms each having over 10000 hm^(2),6 forest farms each having from 5000~10000 hm^(2),and 4 forest farms each having below 5000 hm^(2).These forest farms could then be distinguished into 3 grades by the forest stock volume:2 forest farms with over 1000000 m^(3),7 forest farms with stock volumes in the range 500000~1000000 m^(3),4 forest farms with stock volumes below 500000 m^(3).The forest farms could also be divided into 3 kinds by per unit area stock volume:6 forest farms with over 100 m^(3)•hm^(−2)•year^(−1),3 forest farms with 80 to 100 m^(3)•hm^(−2)•year^(−1),4 forest farms with less than 80 m^(3)•hm^(−2)•year^(−1).Another categorization based on per unit area growth divided the forest farms into 4 categories:1 forest farm with over 30.0 m^(3)•hm^(−2)•year^(−1),4 forest farms with 25~30 m^(3)•hm^(−2)•year^(−1),6 forest farms with 20~24.9 m^(3)•hm^(−2)•year^(−1)and then 2 forest farms with below 20.0 m^(3)•hm^(−2)•year^(−1).The problems of eucalypt resource in 13 forest farms were analyzed,and the countermeasures including strengthening tending of young plantations,adjusting felling age and natural disaster control,were presented for accurate promoting the f

关 键 词：桉树人工林 森林资源 国有林场 广西 

分 类 号：S758.4[农业科学—森林经理学]