文章基本信息

标题：Stable isotopes of carbon and nitrogen help to predict the belowground communities at a regional scale
本地全文：下载
作者：Bing Wang ; Ying Wu ; Dima Chen 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2017
卷号：7
期号：1
DOI：10.1038/s41598-017-07517-w
语种：English
出版社：Springer Nature
摘要：At the regional scale, although environmental factors are known to shape the distributions of belowground communities in terrestrial ecosystems, these environmental factors account for relatively low percentages of the variation in belowground communities. More of this variation might be explained by considering ecosystem stable isotopic values, which can provide insight into environmental conditions. Here, we investigated ecosystem (plant and soil) δ(13)C and δ(15)N values and belowground communities (microbes and nematodes) as well as environmental factors (climates, soils, and plants) across the Mongolian Plateau. The regression analyses showed that plant isotopic values were more closely associated with belowground communities than soil isotopic values, while ecosystem δ(13)C values were more closely associated with the belowground communities than ecosystem δ(15)N values. We also found isotopic values were more closely associated with nematode communities than microbial communities. Variation partioning analyses indicated that environmental variables together explained 16-45% of total variation in belowground communities. After isotopic variables were added as predictors to the variation partition analyses, the explanation of the variance was improved by14-24% for microbial communities and was improved by 23-44% for nematode communities. These findings indicate that isotopic values could be used to predict the properties of belowground communities at a regional scale.