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Research article: 土壤微生物群落地理分布变化图谱

已有 671 次阅读 2019-6-11 19:44 |个人分类:SEL进展|系统分类:论文交流

当前,土壤生物学研究的最大难点之一就是土壤微生物群落的时空变化/分布格局。科研界非常缺乏这方面的数据及研究成果。中科院南京土壤所的褚海燕研究员团队对我国华北平原地区微生物群落的分布进行了研究,并绘制了图谱。

Abstract  The vast diversity of soil bacteria provides essential ecosystem services that support agricultural production. Variation in the diversity and composition of soil biota may have predictive values for soil nutrient cycling and resilience of ecosystem services, thus providing valuable insights to improve food production. The North China Plain (NCP) is one of the world’s key agricultural regions, supplying more than 50% of the cereal consumed in Asia. However, it is unknown whether soil microbial diversity is predictable across the NCP. Using the MiSeq Illumina platform, we examined bacterial community variation in relation to spatial and environmental factors from 243 soils in wheat-maize double cropping rotation fields across the NCP, which cover nearly 0.3 million km2. Based on observed bacterial communities and their relationships with environmental factors, we generated a map of bacterial communities across the NCP. The highest bacterial diversity was found in the middle part of the NCP, with most of the variation in diversity attributable to differences in the community similarity of Actinobacteria and Alphaproteobacteria. These findings provide important baseline information for analyzing the relationships between microbial community, soil functionality and crop yields.

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