| 三峡水库消落带现存植物自然分布特征与群落物种多样性研究 |
| |
| 引用本文： | 郭燕,杨邵,沈雅飞,肖文发,程瑞梅.三峡水库消落带现存植物自然分布特征与群落物种多样性研究[J].生态学报,2019,39(12):4255-4265. |
| |
| 作者姓名： | 郭燕 杨邵 沈雅飞 肖文发 程瑞梅 |
| |
| 作者单位： | 中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室;南京林业大学南方现代林业协同创新中心 |
| |
| 基金项目： | 国家重点研发计划项目（2017YFC050530402）；中国林科院基本科研业务费专项（CAFYBB2017ZA002） |
| |
| 摘 要： | 水文节律是河岸带植物群落演替的主要驱动因子,三峡库区"冬蓄夏泄"的水位调度方式不利于原河岸带陆地植物群落的生存。为揭示三峡库区消落带植被在经历长期水位变动后的物种多样性特征及其分布的时空格局,研究以2008年消落带典型区域固定样地野外调查资料为依托,于2016年9月对经历长期水位涨落周年后的消落带植被的自然分布特征与群落物种多样性等进行复位调查研究,运用重要值、多样性指数、LSD检验等统计计算方法针对物种组成、群落多样性及生活型进行了深入探讨。结果表明:区域植被类型以一年生和多年生的草本植物为主,共发现和确认草本植被群落共有22科40属49种,其中禾本科(Gramineae)6种6属、菊科(Compositae)9种9属、蓼科(Polygonaceae)3种1属、大戟科(Euphorbiaceae)6种5属,为主要优势科,单种、属现象明显;消落带植被的物种多样性随海拔变化呈现"单峰"分布格局,中等海拔(155—165 m)的植物物种多样性最高;且海拔与物种多样性指数(Shannon-weiner指数、Pelou指数、Simpson指数和Richness指数)之间的趋势模拟均呈幂指数关系,其拟合系数r值分别为0.834、0.824、0.817和0.808;受环境资源结构决定,不同海拔消落带物种均呈现出特定的R生存对策。此区段消落带共发现9种生活型,且随海拔的增加,一年生草本植物均占据极大的优势地位,但是库区植物的生活型更加多样化,其他生活型,如藤本、灌木以及落叶乔木的物种出现且数量表现为逐渐增多。这些研究结果对未来消落带物种多样性提高及地域性特色的消落带植被维护具有重要的参考价值。
|
| 关 键 词： | 消落带 植被 重要值 物种多样性 生活型 |
| 收稿时间： | 2018/1/24 0:00:00 |
| 修稿时间： | 2019/2/22 0:00:00 |
Study on the natural distribution characteristics and community species diversity of existing plants in the Three Gorges Reservoir |
| |
| GUO Yan,YANG Shao,SHEN Yafei,XIAO Wenfa and CHENG Ruimei.Study on the natural distribution characteristics and community species diversity of existing plants in the Three Gorges Reservoir[J].Acta Ecologica Sinica,2019,39(12):4255-4265. |
| |
| Authors: | GUO Yan YANG Shao SHEN Yafei XIAO Wenfa and CHENG Ruimei |
| |
| Institution: | Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China,Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China,Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China,Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China and Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China |
| |
| Abstract: | |
| |
| Keywords: | water-level-fluctuation zone vegetation importance value species diversity life type |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《生态学报》浏览原始摘要信息 |
| 点击此处可从《生态学报》下载免费的PDF全文 |
|
