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[1]贺静雯 刘颖 李松阳 余杭 吴建召 崔羽 林勇明** 王道杰 李键.蒋家沟流域植物群落灌草层数量分类、排序及其生境解释*[J].应用与环境生物学报,2020,26(01):1-14.[doi:10.19675/j.cnki.1006-687x.2019.05043]
　HE Jingwen,,et al.Quantitative classification, sorting and habitat interpretation of the shrub and grass layers of plant community in Jiangjiagou Watershed *[J].Chinese Journal of Applied & Environmental Biology,2020,26(01):1-14.[doi:10.19675/j.cnki.1006-687x.2019.05043]
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蒋家沟流域植物群落灌草层数量分类、排序及其生境解释*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年01期
页码:
1-14
栏目:
研究论文
出版日期:
2020-01-25

文章信息/Info

Title:
Quantitative classification, sorting and habitat interpretation of the shrub and grass layers of plant community in Jiangjiagou Watershed *
作者:
贺静雯?刘颖?李松阳?余杭?吴建召?崔羽?林勇明**?王道杰?李键
1福建农林大学林学院 福州 350002
2中国科学院山地灾害与地表过程重点实验室 成都 610041
3福建省高校森林生态系统过程与经营重点实验室 福州 350002
4中国科学院水利部成都山地灾害与环境研究所 成都 610041
Author(s):
HE Jingwen1;? 2;? 3;? LIU Ying1;? 2;? 3;? LI Songyang1;? 2;? 3 ;? YU Hang1;? 2;? 3;? WU Jianzhao1;? 2;? 3;? CUI Yu1;? 2;? 3;? LIN Yongming1;? 2;? 3**;? WANG Daojie2;? 4 & LI Jian1;? 3
1 College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
2 Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences , Chengdu 640001, China
3 Key Laboratory for Forest Ecosystem Process and Management of Fujian province, Fuzhou 350002, China
4 Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 640001, China
关键词:
干热河谷;?植物群落;?环境变量;?TWINSPAN;?CCA
Keywords:
dry hot valley;? plant community;? environmental variables;? TWINSPAN;? CCA
DOI:
10.19675/j.cnki.1006-687x.2019.05043
摘要:
为探讨蒋家沟流域植物群落灌草层分布格局与环境因子间的相互关系，在流域内不同海拔梯度选取24个样地进行植被调查，采用9个环境指标刻画植物群落的地形、空间位置和土壤养分特征；利用TWINSPAN 数量分类和DCA、CCA排序的方法，分析蒋家沟流域主要植物群落灌草层类型及影响植被类型变化和分布的主要环境因子。结果表明：（1）TWINSPAN数量分类将蒋家沟流域植物群落灌草层划分为7种类型。（2）样点DCA排序第1轴基本反映了海拔梯度的变化，第2轴基本反映了土壤全氮含量的变化，DCA 排序图可很好地反映TWINSPAN分类产生的7个主要群丛。（3）CCA排序表明，影响蒋家沟流域植被分布的主要环境因子是海拔高度、土壤含水量和放牧与否。研究发现，蒋家沟流域灌草层植被整体上呈现出明显的垂直地带性分布格局，且植物群落中物种的分布一定程度上决定了植物群落类型的分布，该结果可为干热河谷的植被保护和生态恢复提供相应的理论依据。
Abstract:
To study the relationship between shrub and grass layers of plant community distribution pattern and environmental factors in Jiangjiagou watershed, 24 plots were selected for different vegetation gradients in the basin for vegetation survey. At the same time, using nine environmental indicators to characterize the topography, spatial location and soil nutrient characteristics of plant communities. Through the TWINSPAN quantity classification and DCA and CCA ranking methods, the main shrub and grass layers of plant community types in the Jiangjiagou watershed and the main environmental factors affecting the change and distribution of vegetation types were analyzed. The results showed the following: (1) Shrub and grass layers of plant community within the study area were classified into seven types by the TWINSPAN classification . (2) The first axis basically reflects the change of the altitude gradient, and the second axis basically reflects the change of the TN content of the soil in the DCA ordination diagram. (3) The CCA ranking indicates that the primary environmental factors affecting the vegetation distribution in the Jiangjiagou watershed are altitude and soil water content. The study found that the vegetation of the shrub and grass layers in the Jiangjiagou watershed showed an obvious vertical zonal distribution pattern, and the distribution of species in plant communities determines the distribution of plant community types to some extent. The results can provide a theoretical basis for vegetation protection and ecological restoration in dry and hot valleys.

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备注/Memo

备注/Memo:
收稿日期 Received: 2019-05-27 接受日期 Accepted: 2019-07-03
*国家自然科学基金项目（41790434）、中国科学院山地灾害与地表过程重点实验室开放研究基金资助项目（2019）、福建农林大学杰出青年科研人才计划项目（xjq2017016）、福建农林大学科技创新专项基金项目（CXZX2017111和CXZX2017283）资助
**通讯作者 Corresponding author (E-mail: monkey1422@163.com)
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更新日期/Last Update: 2019-07-05