Comparison of Drivers of Soil Microbial Communities Developed in Karst Ecosystems with Shallow and Deep Soil Depths

doi:10.3390/agronomy11010173

	Comparison of Drivers of Soil Microbial Communities Developed in Karst Ecosystems with Shallow and Deep Soil Depths
	Guan, Huiling 1,3; Fan, Jiangwen 3; Zhang, Haiyan 3; Harris, Warwick 2
刊名	AGRONOMY-BASEL
	2021
卷号	11 期号:1 页码:17
关键词	PLFA soil properties plant properties variance partitioning analysis
DOI	10.3390/agronomy11010173
通讯作者	Zhang, Haiyan(zhanghy.13b@igsnrr.ac.cn)
英文摘要	Soil erosion is prevalent in karst areas, but few studies have compared the differences in the drivers for soil microbial communities among karst ecosystems with different soil depths, and most studies have focused on the local scale. To fill this research gap, we investigated the upper 20 cm soil layers of 10 shallow-soil depth (shallow-SDC, total soil depth less than 100 cm) and 11 deep-soil depth communities (deep-SDC, total soil depth more than 100 cm), covering a broad range of vegetation types, soils, and climates. The microbial community characteristics of both the shallow-SDC and deep-SDC soils were tested by phospholipid fatty acid (PLFAs) analysis, and the key drivers of the microbial communities were illustrated by forward selection and variance partitioning analysis. Our findings demonstrated that more abundant soil nutrients supported higher fungal PLFA in shallow-SDC than in deep-SDC (p < 0.05). Furthermore, stronger correlation between the microbial community and the plant-soil system was found in shallow-SDC: the pure plant effect explained the 43.2% of variance in microbial biomass and 57.8% of the variance in the ratio of Gram-positive bacteria to Gram-negative bacteria (G+/G-), and the ratio of fungi to total bacteria (F/B); the pure soil effect accounted for 68.6% variance in the microbial diversity. The ratio of microbial PLFA cyclopropyl to precursors (Cy/Pr) and the ratio of saturated PLFA to monounsaturated PLFA (S/M) as indicators of microbial stress were controlled by pH, but high pH was not conducive to microorganisms in this area. Meanwhile, Cy/Pr in all communities was >0.1, indicating that microorganisms were under environmental stress. Therefore, the further ecological restoration of degraded karst communities is needed to improve their microbial communities.
资助项目	National Key Research and Development Program[2017YFC0506505]
WOS研究方向	Agriculture ; Plant Sciences
语种	英语
出版者	MDPI
WOS记录号	WOS:000609666700001
资助机构	National Key Research and Development Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/160750]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Haiyan
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Landcare Res, POB 69040, Lincoln 7640, New Zealand 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Guan, Huiling,Fan, Jiangwen,Zhang, Haiyan,et al. Comparison of Drivers of Soil Microbial Communities Developed in Karst Ecosystems with Shallow and Deep Soil Depths[J]. AGRONOMY-BASEL,2021,11(1):17.
APA	Guan, Huiling,Fan, Jiangwen,Zhang, Haiyan,&Harris, Warwick.(2021).Comparison of Drivers of Soil Microbial Communities Developed in Karst Ecosystems with Shallow and Deep Soil Depths.AGRONOMY-BASEL,11(1),17.
MLA	Guan, Huiling,et al."Comparison of Drivers of Soil Microbial Communities Developed in Karst Ecosystems with Shallow and Deep Soil Depths".AGRONOMY-BASEL 11.1(2021):17.