不同防护林配置下的生物多样性调查及其与土壤养分的关系——以天津蓟县黄土梁子小流域为例

摘要

以天津蓟县黄土梁子小流域不同防护林为研究对象,采用植物群落调查法和原状土就地取样技术,研究4种植物群落的物种多样性、土壤养分特征及两者的相互关系.结果表明,道路防护林、水源涵养林的物种多样性与丰富度最高,沟道防护林的均匀度指数最大;各防护林养分含量差异极显著,除pH外,各养分指标与物种多样性指标呈显著正相关.%With different shelter forests of Huangtuliangzi minor watershed of Jixian county in Tianjin as investigation objects, the species diversity and soil nutrient properties of 4 kinds of plant communities and the correlation between them were investigated by plant community investigation and field sampling technique of original soil. The results showed that the species diversities and abundances of road protection forest and forest for conservation of water supply were highest; the evenness index of gully erosion control forest was biggest; the difference of nutrient contents of different shelter forests was extremely significant, except for pH value, all the nutrient indexes was significantly positively correlated with species diversity index.