生态环境学报Issue(4)：617-623,7.DOI:10.16258/j.cnki.1674-5906.2015.04.011
尾叶桉林下5种木本植物土壤微生物群落特征
Soil Microbial Community Characteristics of 5 Tree Species in Eucalyptus urophylla Plantation
摘要
Abstract
Understory plays crucial roles in driving the ecosystem processes and functions. For the management of plantation, suitable understory may not only increase the capacity of carbon sequestration, but also can maintain soil fertility and improve the economic benefits, which would contribute to the sustainable development. Therefore, a study was conducted on the main understory species in an Eucalyptus urophylla (six years old) plantation in Heshan National Field Research Station of Forest Ecosystem. Five naturally generated understory species (i.e.,Gardenia jasminoides,Ilex asprella,Litsea cubeba,Rhodomyrtus tomentosa, and Common Melastoma) were chosen and the roots of other plants were excluded by trenching. The soil physical-chemical properties and microbial community composition were analyzed. Also the richness index (SR), diversity index (H′) and evenness index (J) were calculated to evaluate the diversity of soil microbial biomarkers for the five understory species. No significant differences of the soil pH, soil water content and soil organic carbon were found between trenching and control plots in both dry and rainy season. Furthermore, the total soil microbial biomass (PLFAs) did not differ in the trenching plots compared with those in the control plots. Although soil microbial community composition varies with different understory species, both the PCA analysis and diversity indices of the soil microbial biomarkers showed that there was no significant difference between the trenching and control plots. Our result indicated that these five understory species in Eucalyptus plantation did not affect soil properties; therefore, the aboveground biomass and economic values of understory species should be concerned when selecting the understory commercial tree species.关键词
尾叶桉/林下木本植物/土壤微生物量/土壤微生物群落组成Key words
Eucalyptus urophylla/understory woody plants/soil microbial biomass/soil microbial community composition分类
农业科技引用本文复制引用
朱小林,梁辰飞,蔡锡安,傅声雷,周丽霞..尾叶桉林下5种木本植物土壤微生物群落特征[J].生态环境学报,2015,(4):617-623,7.基金项目
国家自然科学基金项目（31210103920）；中国科学院战略性先导科技专项（XDA05070301）；广东省林业科技创新项目 （）
