摘要
在野外样方调查和室内试验分析的基础上,通过测定物种多样性指数与土壤理化性质指标,分析了杂草薇甘菊(Mikaina micrantha H.B.K.)对入侵地植物群落与土壤理化性质的影响。结果表明,薇甘菊入侵后明显改变了入侵地的植物群落结构,使物种多样性显著降低;薇甘菊入侵显著提高了土壤pH值、速效钾含量以及土壤含水量,对土壤有机质和碱解氮等性质的影响不明显。薇甘菊入侵后土壤养分含量增加,形成了对自身生长有利的土壤环境。
The effects of Mikania micrantha on plant community and physical-chemical properties of soil in its habitat were studied through the survey of community plots and laboratory analysis.The results showed that the invasion of M.micrantha changed the structure of plant community significantly and decreased the plant diversity.Meanwhile,it increased pH value and the content of available K and soil water,while had no obviouse effect on the contents of organic matter and alkali-hydrolyzable nitrogen.Nutrition content in soil increased after the invasion,which could favor the growth of M.micrantha.
出处
《湖北农业科学》
北大核心
2011年第18期3711-3713,共3页
Hubei Agricultural Sciences
基金
广东省教育厅育苗工程项目(ZD906)
广东省自然科学基金项目(2007009850)
