北京典型矿区恢复过程中土壤环境因子与植物群落分布的关系

Relationship between Soil Environmental Factors and Plant Communities Distribution in the Process of Ecological of Beijing Typical Mining Areas

基于娄子水采石废弃地实地调查的样地物种重要值,运用双向指示种分析将植被分为不同群落。利用典范对应分析(CCA)分析了土壤环境因子与植被分布的相关关系,结果表明土壤阳离子交换容量、土壤有机质与草本植被分布显著相关。通过土壤环境因子与植物群落特征值的相关分析,发现乔灌木群落盖度与速效磷含量呈显著正相关;草本植物群落丰富度与土壤速效钾含量呈显著正相关,均匀度与土壤碱解氮含量呈显著正相关,Shannon指数与土壤速效磷含量和有机质含量均呈显著正相关,Simpson指数与土壤速效磷含量呈显著正相关,群落盖度与土壤全磷含量呈显著正相关而与速效钾含量呈显著负相关,群落平均高度与土壤酸碱性呈显著负相关。研究结论将为矿区恢复提供科学支持。

Based on the species importance values of the plots surveyed in Louzishu quarry abandoned land, the vegetation was divided into different communities by bidirectional indicator species analysis. The correlation between soil environmental factors and plant distribution was analyzed by canonical correspondence analysis (CCA). The results showed that soil cation exchange capacity and soil organic matter were significantly correlated with herbaceous plant distribution. Through the correlation analysis of soil environmental factors and plant community characteristic values, it was found that the tree and shrub community coverage was significantly positively correlated with soil available phosphorus content;herbaceous plant community richness was significantly positively correlated with soil available potassium content, and evenness was significantly positively correlated with soil alkaline hydrolyzed nitrogen content. The Shannon index was significantly positively correlated with soil available phosphorus content and organic matter content, and Simpson index was significantly positively correlated with soil available phosphorus content. The community coverage was significantly positively correlated with soil total phosphorus content and significantly negatively correlated with soil available potassium content. The average height of the community was significantly negatively correlated with soil acidity. The results of this study would provide scientific support for mine restoration.