生态环境学报Issue(6)：938-946,9.DOI:10.16258/j.cnki.1674-5906.2015.06.005
城市化对南亚热带常绿阔叶林土壤生物群落结构的影响
Effects of Urbanization on Soil Community Structure under Subtropical Evergreen Broad-leaved Forests
摘要
Abstract
The impact of urbanization on community structure of soil microbes and soil fauna under Subtropical Evergreen Broadleaf Forest (SEBF) was measured along an urban-suburban-rural gradient in Guangzhou, China. Furthermore, the impact on the biophysical structure of the soil community was quantified using the eco-exergy method. The results showed that the impact of urbanization on soil microbes and soil fauna was different in both direction and degree, and that these differences were mainly related to soil moisture, ammonium and nitrate nitrogen, soil organic matter, and the biomass of herbs. Urbanization can decrease the biomass and eco-exergy of soil microbes under SEBF, and increase the differences between the dry and wet seasons; while a low degree of urbanization can increase the group richness as well as the eco-exergy of soil fauna, and decrease the differences between dry and wet seasons. After counting both the soil microbes and soil fauna, the eco-exergy of the whole soil community at the suburban study site was higher than that at the urban and rural study sites. Larger fauna is the main contributor to the eco-exergy of the soil community (>64.41%), while middle and small fauna contribute more to the specific eco-exergy (>50.00%). The eco-exergy method can measure the biophysical organization of the soil community, but its application is limited by the availability of weighting factors.关键词
土壤微生物/土壤动物/群落结构/生态㶲/结构㶲Key words
urbanization, soil microbes/soil fauna/community structure/eco-exergy分类
资源环境引用本文复制引用
符方艳,陆宏芳..城市化对南亚热带常绿阔叶林土壤生物群落结构的影响[J].生态环境学报,2015,(6):938-946,9.基金项目
国家自然科学基金项目 （）
