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三峡水库小江流域消落区植物多样性研究
引用本文:张志永,刘明芹,郑志伟,张卓文,胡 莲,万成炎.三峡水库小江流域消落区植物多样性研究[J].水生态学杂志,2011,32(3):38-42.
作者姓名:张志永  刘明芹  郑志伟  张卓文  胡 莲  万成炎
作者单位:1. 水利部中国科学院水工程生态研究所,湖北武汉,430079
2. 华中农业大学,湖北武汉,430070
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
摘    要:为了解三峡水库运行初期消落区的植被状况,2009年5月、7月和9月对小江流域消落区高程150、160和170m处植物的种类组成、生物量和多样性等特征进行了调查与分析。结果表明,小江流域消落区维管束植物共有140种,隶属于38科113属,以草本植物或旱生植物为主。群落优势种主要有香附、苍耳、小白酒草、狗牙根等18种。生物量均值999.9g/m2,变幅140.7~2055.6g/m2;烘干重均值310.7g/m2,变幅为26.5~932.6g/m2。植物多样性Margalef指数、Shannon-Wiener指数、Simpson指数和Pielou均匀度指数等均在5月最小,7月最大,9月略下降,在高程150m处最小,160m处最大,170m处次之。并对小江流域消落区植物的演替趋势、生态恢复、影响因素和利用前景进行了初步探讨。

关 键 词:三峡水库  小江流域  消落区  植物多样性
收稿时间:1/13/2011 2:44:44 PM
修稿时间:2/25/2011 5:41:01 PM

Plant Diversity in Water-level-fluctuation Zone of Xiaojiang Watershed in Three Gorges Reservoir
zhang zhi yong,liu ming qin,zheng zhi wei,zhang zhuo wen,hu lian and wan cheng yan.Plant Diversity in Water-level-fluctuation Zone of Xiaojiang Watershed in Three Gorges Reservoir[J].Journal of Hydroecology,2011,32(3):38-42.
Authors:zhang zhi yong  liu ming qin  zheng zhi wei  zhang zhuo wen  hu lian and wan cheng yan
Affiliation:(1. Institute of Hydroecology, Ministry of Water Resources and Chinese Academy of Sciences
Abstract:With data from spots located water-level-fluctuation zone in Xiaojiang Small watershed during May, July and September in 2009, a research has been carried out the species composition, biomass and diversity of plant. The results showed that 140 species of vascular plant belong to 38 families, 113 generas. Herbs or xerophytes were main components. There were 18 species of the dominant species of plant communities, for example Cyperus rotundus, Xanthium sibiricum, Comnyza canadensis, Cynodon dactylon and so on. The plant biomass of fresh weight ranged 140.7 to 2055.6 g/m2 on an average of 999.9g/m2. The plant biomass of dry weight ranged 26.5 to 932.6 g/m2 on an average of 310.7 g/m2. The plant diversity indices such as Margalef index, Shannon-Wiener index, Simpson index and Pielou index in July were higher than those in September. The decrease order of plant diversity indices were 160 m, 170 m and 150 m from July to September. The succession trends and effect factors, restoration and utilization of plant were discussed in water-level-fluctuation zone.
Keywords:Three Gorges Reservoir  Xiaojiang watershed  water-level-fluctuation zone  plant diversity
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