摘要
以佛山市云勇林场2004年经杉木Cunninghamia lanceolata纯林改造后形成的不同树种配置模式的生态公益林为研究对象,针对11种配置模式和1个对照模式共设置了34个固定样地,对2014年和2018年各样地中物种组成、物种多样性指数等进行比较分析。结果表明:从森林恢复10年到14年,改造后生态公益林的乔灌木层和草本层的植物种类数量均明显增加,变化幅度在25%~93%间,且草本层增加的植物种类数量明显高于乔灌木层。改造后生态公益林群落优势种也明显变化,表现为残留的杉木重要值下降,优势种由以火力楠Michelia macclurei、山鸡椒Litsea cubeba和西南木荷Schima wallichii等为主逐渐转变为西南木荷Schima wallichii、红锥Castanopsis hystrix和火力楠Michelia macclurei等为主。不同树种配置模式下乔灌木层物种多样性指数更多比例表现为减小,达60%;而草本层物种多样性指数更多比例表现为增加,达83%,森林物种多样性的增加转变为由林下层贡献为主。以上这些物种组成和物种多样性的转变表明改造后的植物群落已具备一定的自我更新能力。
Based on the investigation of non-commercial forestswith different configuration modes formed by the transformation of Cunninghamia lanceolata in Foshan Yunyong Forest Farm in 2004,a total of 34 plots were set up according to 11 allocation models and 1 control model,the species composition and species diversity index of the plots in 2014 and 2018 were compared and analyzed.The results showed that the number of species in the arbor and herb layers of the rebuilt ecological public welfare forests increased from 10 to 14 years,ranged from 25%to 93%,the increase of the number of species in the herb layer was greater than that in the arbor layer.After the transformation,the dominant species in the community of the non-commercial forest also changed obviously,which showed that the important value of the residual Cunninghamia lanceolata decreased,with the predominant tree species M.macclurei,L.cubeba and S.wallichii replaced by S.wallichii,C.hystrix and M.macclurei.The species diversity indices in the arbor and herb layers decreased in most of the 11 configuration modes,up to 60%,while increased in the herb layer,up to 83%,the increase of forest species diversity was mainly contributed by forest understory.The above changes in species composition and species diversity indicate that the reformed plant community has regeneration ability.
作者
叶小萍
盘李军
许涵
李艳朋
冼伟光
谭健彬
李政
叶伯坚
YE Xiaoping;PAN Lijun;XU Han;LI Yanpeng;XIAN Weiguang;TAN Jianbin;LI Zheng;YE Bojian(Foshan Yunyong Forest Farm,Foshan,Guangdong 528518,China;Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou,Guangdong 510520,China)
出处
《林业与环境科学》
2022年第5期105-112,共8页
Forestry and Environmental Science
基金
广东省林业科技创新项目(2018KJCX013),广东省林业科技创新项目(2020KJCX006)
中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2022SY014、CAFYBB2021ZH002、CAFYBB2021SY002)
广东省省级生态公益林效益补偿专项资金“广东省生态公益林可持续经营模式评估研究”。
关键词
云勇林场
林分改造
生态公益林
物种多样性
物种组成
Yunyong forest farm
afforestation
ecological public welfare forests
species diversity
species composition
