干旱区生态环境知识资源中心(Arid): 西北半干旱区湿地生态系统植物群落空间分布特征研究

Arid

	西北半干旱区湿地生态系统植物群落空间分布特征研究
其他题名	Plant community spatial distribution pattern of wetland ecosystem in a semi-arid region of northwestern China
	李瑞 1; 张克斌1 ; 刘云芳 1; 王百田 1; 杨晓晖 2; 侯瑞萍 3
ISSN	1000-1522
出版年	2008
卷号	30 期号:1 页码:6-13
中文摘要	该文以宁夏哈巴湖自然保护区四儿滩湿地为研究对象,探讨西北干旱、半干旱区湿地草原生态系统植物群落空间分布特征及影响群落空间分布格局的主要环境因子。外业调查选择每年的植物生长季节,从东、东北、西、西北4个方向沿着湿地草原生境梯度布设4条样线,每条样线均超过1km。调查内容包括植物盖度、生物量、密度、频度、高度等,以及土壤环境因子。采用TWINSPAN数量分类方法和DCA排序方法对四儿滩湿地植被进行数量分类和排序,同时进行排序轴与土壤环境因子间的秩相关分析。研究表明：研究区植被分为3个植被型14个群丛。第一组为盐生沼泽植被,以湿生、盐生植物为主,代表群丛为芦苇＋盐爪爪,主要分布在湿生带;第二组为草甸植被型,以湿生、中生植物为主,代表群丛为白刺＋白草群丛,主要分布在湿地草原交错带;第三组为草原植被型,以中生、旱生的赖草＋新疆猪毛菜＋苦豆子群丛为主,分布在草原旱生带。秩相关分析结果表明：土壤含水量、全盐含量、土壤养分含量（全N、速效K、有机质等）均是影响植被沿湿地草原梯度分布格局的主要环境因子;湿地草原不同方位间植被分布格局差异的主要影响因子是地形及放牧等。此外,该文还对重要值的完善与改进进行了探讨。
英文摘要	The spatial distribution characteristics of plant communities in a wetland-dry grassland ecosystem in arid ＆ semi-arid region in northwestern China and the main influencing factors were studied. Siertan Wetland in the Haba Lake Nature Reserve was the study area. Four transect lines, each of which was about 1 km long, were set up in the growing season along the biotope gradient in four directions： east, northeast, west and northwest. Attributes measured were the frequency of occurrence, height, density, coverage, biomass, etc. and soil environmental factors. The data were analyzed using two-way indicative species analysis （TWINSPAN）, detrended correspondence analysis （DCA） and Spearman＇ s correlation. On this basis, the vegetation in Siertan Wetland was classified into three types and 14 associations. The first vegetation type was halophytic marsh vegetation, which was mainly distributed in the wetland zone. This vegetation type mainly contained halophyte and hygric plants and its representative association was Association. Phragmites communis, Kalidiumfoliatum. The second type was meadow vegetation, which distributed in the ecotone. The species of meadow vegetation was mainly mesophytic and its representative association was Association. Nitraria tangutorum, Pennisetum flaccidum. The third vegetation type was grassland vegetation, which mainly consisted of mesophyte and xerophytes, and distributed in arid-grassland zone. The representative association of the third vegetation type was Association. Anaeurolepidium secalium, Saussurea runcinata. Correlation analysis between the axes of DCA and the soil environment factors shows that the soil moisture content, organic matter, soil salt content, total nitrogen etc. are the main environmental factors influencing the vegetation distribution pattern along the biotope gradient from wetland to arid grassland. Other influencing factors are microtopography and grazing pressure. Additionally, this paper reports modifications and improvements to the importance value methodology.
中文关键词	湿地 ; 植物群落 ; 空间分布 ; TWINSPAN数量分类 ; DCA排序 ; 环境解释
英文关键词	wetland plant community spatial distribution TWINSPAN quantitative classification DCA ordination environmental interpretation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY ; PLANT SCIENCES
WOS研究方向	Forestry ; Plant Sciences
CSCD记录号	CSCD:3205318
来源机构	北京林业大学 ; 中国林业科学研究院林业研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222010
作者单位	1.北京林业大学水土保持学院, 水土保持与荒漠化防治教育部重点实验室, 100083; 2.中国林业科学研究院林业研究所; 3.国家林业局调查规划设计院
推荐引用方式 GB/T 7714	李瑞,张克斌,刘云芳,等. 西北半干旱区湿地生态系统植物群落空间分布特征研究[J]. 北京林业大学, 中国林业科学研究院林业研究所,2008,30(1):6-13.
APA	李瑞,张克斌,刘云芳,王百田,杨晓晖,&侯瑞萍.(2008).西北半干旱区湿地生态系统植物群落空间分布特征研究.,30(1),6-13.
MLA	李瑞,et al."西北半干旱区湿地生态系统植物群落空间分布特征研究".30.1(2008):6-13.