| 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。 |
| 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 |
| DOI： |
| 分类号: |
| 基金项目: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”。 |
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| Study on the Dynamic Changes of Species Composition and Diversity of the Rebuilt Ecological Public Welfare Forests |
|
YE Xiaoping1, PAN Lijun1, XU Han2, LI Yanpeng2, XIAN Weiguang1, TAN Jianbin1, LI ZHeng1, YE Bojian1
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1.Foshan Yunyong forest farm;2.Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou Guangdong, China
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| Abstract: |
| 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. |
| Key words: Yunyong forest farm afforestation ecological public welfare forests species diversity species composition |
