不同毛竹林结构配置的土壤质量评价

Soil Quality Assessment of Different Phyllostachys Heterocycla Stands

为探明毛竹纯林地植被结构配置对土壤质量的影响,以安吉县过度开发毛竹林为研究对象,通过样地土壤样品采集和测试,比较分析不同毛竹林地0～20 cm土层的土壤性质,并基于主成分分析,综合评价毛竹林地不同结构配置的土壤质量。研究结果表明,通过林下灌木、灌草结构的配置,毛竹林地的土壤养分含量得到提高,土壤黏粒含量增加,土壤质量指数上升。其中,毛竹林林下灌草结构配置的效果优于灌木结构的配置效果。

In order to find out the effect of vegetation structure patterns on soil quality in pure Phyllostachys heterocycla stands,taking over-exploited Phyllostachys heterocycla stands in Anji county as the research object,the soil properties of 0-20 cm soil layer in different Phyllostachys heterocycla stands were compared and analyzed by sampling and testing. Based on principal component analysis,the soil quality of different structure patterns of Phyllostachys heterocycla stands was comprehensively evaluated. The results showed that the soil nutrient content,soil clay content and soil quality index increased in the Phyllostachys heterocycla stands after planting shrub and shrub-grass. Further,the effect of shrub-grass structure pattern in Phyllostachys heterocycla stands was better than that of shrub structure pattern.