| 喻阳华 肖卫平 严令斌 喻理飞 黄宗胜.赤河上游森林植物群落物种多样性研究[J].广东农业科学,2015,42(2):142-145 |
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赤河上游森林植物群落物种多样性研究 |
| Characristics of species diversity of plant communities in the upper reaches of Chishui river |
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| DOI： |
| 中文关键词: 植物多样性 结构特征 演替 国酒特殊水源保护区 |
| 英文关键词: plant diversity structural characteristics succession Chinese wine special water conserva |
| 基金项目: |
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| 摘要点击次数: 1940 |
| 全文下载次数: 795 |
| 中文摘要: |
| 赤水河流域上游国酒特殊水源保护区是水源涵养林工程重点地区之一。 根据样地调查资料，运用 4种常用的物种多样性指数对调查林分乔木层、灌木层和草本层的物种多样性进行研究，分析了该地区森林植物群落物种多样性的特征。 结果表明：随着灌草群落阶段玉、灌丛群落阶段域、灌木群落阶段芋、乔林群落阶段郁和次顶极群落阶段吁的演替进展，群落高度逐渐增加，同时结构趋于复杂；各阶段灌木层较乔木层和草本层物种组成丰富、多样性高。 Shannon-Wiener 多样性指数、Margalef 指数、Pielou 指数的排序与物种数量的排序一致，Simpson 指数则相反。 乔林群落阶段郁的物种组成最复杂，适宜灌木和草本生长，为森林群落结构调整提供依据。 总体而言，该区植物多样性指数不高，应采取合理森林经营及适度人为干扰措施，提高森林群落植物多样性，促进水源涵养和水土保持等功能的恢复。 |
| 英文摘要: |
| Chinese wine special water conservation area in the upper reaches of Chishui river is one of the keyareas of water conservation forest project. Based on the survey and the data from 27 plots, characteristics of forestplant diversity in the upper reaches of Chishui River are discussed. Four plant diversity indexes are introduced tocompare the species diversity of tree layer, shrub layer and herb layer. The results show that community heightincrease gradually, the structure tend to be complex, species abundance and diversity of shrub layer is higher thanthose of tree layer and herb layer at every stage with the succession of grass community stage, bushwood communitystage, shrub community stage , high-forest community stage and sub-climax community stage. Sortings ofShannon-Wiener diversity index, Margalef index and Pielou index is consistent with that of species numbers, sorting ofSimpson index are contrary to that of species number. High -forest community has the most complex speciescomposition, it is suitable to the grow of shrub and herbs, and provide the basis for the structure adjustment of forestcommunity. On the whole, plant diversity indexes are not high in this area, so forest management and humandisturbance measures should be adopted to improve the species diversity of plant communities, recover the function ofwater conservation and water and soil conservation. |
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