文献类型：期刊文献

中文题名：三峡水库巫山-秭归段典型消落带植被空间分异研究

英文题名：Spatial Heterogeneity of Plant Community in Zigui and Wushan Typical Hydro-fluctuation Belt of Three Gorges Reservoir Areas

作者：朱妮妮[1] 秦爱丽[1] 郭泉水[1] 朱莉[1,2] 许格希[1] 裴顺祥[3]

第一作者：朱妮妮

机构：[1]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,北京100091;[2]河南科技大学农学院,河南洛阳471003;[3]中国林业科学研究院华北林业实验中心,北京102300

年份：2015

卷号：25

期号：1

起止页码：109-115

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：“十二·五”林业科技支撑计划项目(2011BAD38BO4);“十一·五”林业科技支撑计划项目(2006BAD03A313)资助

语种：中文

中文关键词：物种多样性;生活型;优势植物;空间分异;消落带植被;三峡库区

外文关键词：species diversity; life form; dominant plant species; spatial heterogeneity; Three Gorges Reservoir area; vegetation of hydro-fluctuation belt

分类号：S718.3

摘要：消落带植被是三峡水库生态系统的重要组成部分,对于确保水库安全和库岸社会经济发展起着重要作用。消落带植被的空间分布及优势植物组成是消落带治理植物材料选择的重要依据。本研究基于三峡水库干流巫山—秭归段典型消落带的植被调查,研究消落带植被的物种多样性、植物生活型、优势植物的空间分布特征及其变化规律。结果表明:随着海拔的下降,消落带植被的物种多样性减少;1年生草本植物在群落中所占比例增加,多年生草本植物所占比例因地而异(巫山消落带为增加,秭归消落带为减少),木本植物所占比例减少。淹水较深区段消落带植被的优势植物主要是莎草科的莎草和禾本科的狗牙根、毛马唐、狗尾草及菊科的鬼针草等;淹水较浅区段的优势植物种类有所增加,但处于优势的仍然是莎草科、禾本科和菊科植物。能够在淹水区段存活的植物大多具有发达的通气组织、特殊的繁殖特性及对淹水和干旱环境有较强的适应能力。
The vegetation in the hydro-fluctuation belt of Three Gorges Reservoir area as an important component of ecological system plays an important role in ensuring reservoir safety and social-economic development. The spatial distribution configuration and dominant plant species composition of the hydro-fluctuation belt are important bases for the selection of plant materials. Based on vegetation survey from four monitoring plots located in Zigui and Wushan, the trunk line of Three Gorges Reservoir, the species diversity, plant life form and spatial distribution configuration of dominant plants were investigated. The results are as follows. 1. With the altitude lowering, the species diversity decreased, the proportion of therophyte herbs increased, the species diversity of perennial herbs differed （ in Zigui decreased, while in Wushan increased）, and the species diversity of woody plant decreased. 2. The dominant species in deep water sections of Three Gorges Reservoir area mainly belongs to Poaceae, Cyperaceae and Asteraceae, such as Cyperus rotundus, Cynodon dactylon, Digitaria ciliaris, Setaira viridis, Bidens pilosa and so on. The dominant species survived in shallow water sections also mainly belongs to Poaceae and Asteraceae, but also emerged some new important value higher dominant species compared to deep water sections. The mechanism of these survival species is that they mainly have underground creeping rhizomes, well developed aerenchyma and strong adaptability to flooding and extreme dry hot environment when the water level drops.