生态环境学报Issue(5)：762-766,5.DOI:10.16258/j.cnki.1674-5906.2015.05.006
宁夏盐池封育草地植被群落多样性及其与环境关系的典范对应分析
Diversity of Plant Community in Relation to Environment Factors Based on CCA in Fencing Region in Yanchi, Ningxia
摘要
Abstract
To explore the diversity of plant community and the main environmental factors affecting the distribution in fencing region in arid area, combined with the national desertification monitoring and positioning project, vegetation investigation was carried out in July, 2014 in Yanchi, Ningxia. The studied area was divided into three areas:core area (E), edge area (E1) and peripheral area (E2). Samples of the plant population were recorded according to name, species, number, height, coverage, height, biomass, soil bulk density, soil moisture, soil compaction, the coverage of biological crust. Meantime, soil available N, fast P, fast K, the content of soil organic matter were respectively measured. They were analyzed in respect to diversity indices for community diversity (species diversity index, community dominant concentration index, community evenness index), and canonical correspondence analysis in order to analysis of the relationship between vegetation and environmental factors. The results showed 22 kinds of plants were found in edge area, the main species include: Artemisia ordosica, Salsola ruthenica, Euphorbia humifusa, Leymus secalinus, Corispermum mongolicum and SW (2.548), SP (0.893) index is higher than the other two areas. Its vegetation diversity is richest and the community stability is the highest. There are 16 kinds of plants were appeared in peripheral area, the main species include:Sophora alopecuroides, Heteropappus altaicus, Corispermum mongolicum and JSW index (0.842) is highest which means vegetation diversity rich and community high. There are 19 kinds of plants were found in core area, the main species include:Artemisia scoparia, Salsola ruthenica, Sophora alopecuroides. SW (2.163), SP (0.828), JSW (0.734) index is the lowest than the other two areas, its vegetation diversity is poor and community stability is low. Soil bulk density and soil crust coverage are the main environmental factors affecting plant community in fencing grassland in arid area based on CCA.关键词
半干旱区/封育草地/植被多样性/典范对应分析Key words
arid area/fencing grassland/vegetation diversity/canonical correspondence analysis分类
农业科技引用本文复制引用
苗静,张克斌,刘小丹,李海涛..宁夏盐池封育草地植被群落多样性及其与环境关系的典范对应分析[J].生态环境学报,2015,(5):762-766,5.基金项目
国家自然科学基金项目（30771764）国家林业局宁夏盐池荒漠化定位监测项目 （）
