辽宁老秃顶子北坡植物群落物种多样性及其与土壤特性的相关性分析  

Analysis of species diversity of plant communities and its correlation with soil characteristics on northern slope of Laotudingzi Mountain, Liaoning Province

作　　者：郑楠[1] 张华[1] 武晶[1] 曹月[1] 

机构地区：[1]辽宁师范大学城市与环境学院,辽宁大连116029

出　　处：《生态科学》2009年第6期510-515,共6页Ecological Science

基　　金：辽宁省自然科学基金项目(20062138);辽宁省教育厅创新团队项目(2007T094)

摘　　要：通过沿海拔梯度的系统样方调查,利用物种丰富度、α多样性和β多样性等指标,对辽宁老秃顶子北坡植物群落木本层和草本层物种多样性随海拔梯度的变化趋势进行了研究,并对植物群落物种多样性与土壤特性之间的相关关系进行了初步探索。结果表明:木本植物物种多样性随海拔梯度的升高呈波动式降低的趋势;草本植物物种多样性随海拔梯度的变化趋势为先降低后升高;群落类型间的过渡带是植物物种替换速率较高的地区;老秃顶子北坡土壤类型以棕色森林土和暗棕色森林土为主,土壤有机质含量较高;群落物种多样性与土壤特性之间存在着一定的负相关性。Through systematic sampling surveys along altitudinal gradient, the authors analyze the trend of changes of species diversity of wood and herb layers of plant communities along altitudinal gradient, meanwhile preliminarily explore the correlation between species diversity of plant communities and soil characteristics on the northern slope of Laotudingzi Mountain, Liaoning Province by using species richness index, α diversity index and β diversity index. The results show that species diversity of wood layers declines with fluctuation with an increasing altitude, while species diversity of herb layers shows a trend of decreasing first but increasing later. Replacing speed of species diversity index is high in the transition zone between different communities. Major soil types are brown forest soil and dark brown forest soil with high organic matter content on the northern slope of Laotudingzi Mountain. There is a negative correlation between species diversity of plant communities and soil characteristics.

关 键 词：植物群落 物种多样性 海拔梯度 土壤特性 

分 类 号：Q948[生物学—植物学]