期刊
PEDOBIOLOGIA
卷 63, 期 -, 页码 37-45出版社
ELSEVIER GMBH
DOI: 10.1016/j.pedobi.2017.06.006
关键词
Grasslands; Shrub encroachment; Basal respiration; Microbial biomass; Species diversity; Microbial functional diversity; Precipitation gradient
资金
- National Research Foundation [CPR20110619000019520]
- German BMBF [01LL1301A]
The use of soil microbial and biochemical parameters could play an important role in monitoring effects of shrub encroachment in grasslands due to their rapid reaction to environmental fluctuations. We compared total organic carbon (C-org), soil total nitrogen (TON), microbial biomass, basal respiration, soil microbial quotient (C-mic/C-org) species and functional diversity between pairs of neighbouring, leguminous shrub-encroached and open grassland plots along a rainfall gradient (300 mm to 1500 mm mean annual precipitation (MAP)) in South Africa. In semi-arid regions, soil Corg was higher in shrub-encroached grasslands than in open grasslands while the reverse was true in humid regions (1500 mm MAP). Soil total nitrogen was generally higher in the shrub encroached grasslands compared to open grasslands. Soil microbial biomass and basal respiration was higher in shrub-encroached grassland across the precipitation gradient. There was also a difference in microbial functional diversity between the encroached and adjacent open grasslands, which was most evident in the semi-arid regions. Our results suggest that land-cover change might influence microbial properties along the rainfall gradient.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据