Moderate disturbance increases the PLFA diversity and biomass of the microbial community in biocrusts in the Loess Plateau region of China

doi:10.1007/s11104-020-04554-9

	Moderate disturbance increases the PLFA diversity and biomass of the microbial community in biocrusts in the Loess Plateau region of China
	Bao, Tianli 1,2; Gao, Liqian 1; Wang, Shanshan 1,2; Yang, Xueqin 1; Ren, Wei 1,2; Zhao, Yunge 1,3
刊名	PLANT AND SOIL
	2020-05-19
页码	15
关键词	Biocrusts Disturbance Microorganism Intermediate disturbance hypothesis Dryland
ISSN号	0032-079X
DOI	10.1007/s11104-020-04554-9
通讯作者	Zhao, Yunge(zyunge@ms.iswe.ac.cn)
英文摘要	Aims Biological soil crusts (biocrusts) play key roles in dryland ecosystems. Examining the effects of different intensities of disturbance on biocrusts and exploring appropriate disturbance levels can provide important information about ecosystem processes and services in drylands. Methods Five disturbance intensities ranging from 10% to 50% based on the percentage of broken biocrusts were implemented to examine the effects of simulated goat trampling on microbial communities; microbial community structure was measured with the phospholipid fatty acid method. Results The effects of disturbance on the biocrusts were closely related to disturbance intensity. Surprisingly, moderate disturbance had a weak effect on total biocrust coverage but increased cyanobacterial coverage by 2 3%. Consequently, there was an increase in total N, a reduction in the C/N ratio and improvements in soil moisture, and these effects led to 13 21% and 5 6% increases in microbial biomass and diversity, respectively, compared with those in undisturbed biocrusts. However, high-intensity disturbance substantially reduced biocrust coverage and microbial abundance. Conclusions The study supports the intermediate disturbance hypothesis and suggests that moderate disturbance has positive effects on the microbial communities of biocrusts. These findings provide vital information for the ecological management of drylands.
资助项目	National Natural Science Foundation of China[41830758] ; National Natural Science Foundation of China[41571268] ; National Key Research and Development Program[2017YFC0506503]
WOS关键词	BIOLOGICAL SOIL CRUSTS ; MICROPHYTIC CRUSTS ; SPECIES RICHNESS ; PATTERNS ; IMPACT ; ESTABLISHMENT ; GERMINATION ; INFILTRATION ; GRASSLANDS ; HYPOTHESIS
WOS研究方向	Agriculture ; Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000534200500001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159642]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhao, Yunge
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Bao, Tianli,Gao, Liqian,Wang, Shanshan,et al. Moderate disturbance increases the PLFA diversity and biomass of the microbial community in biocrusts in the Loess Plateau region of China[J]. PLANT AND SOIL,2020:15.
APA	Bao, Tianli,Gao, Liqian,Wang, Shanshan,Yang, Xueqin,Ren, Wei,&Zhao, Yunge.(2020).Moderate disturbance increases the PLFA diversity and biomass of the microbial community in biocrusts in the Loess Plateau region of China.PLANT AND SOIL,15.
MLA	Bao, Tianli,et al."Moderate disturbance increases the PLFA diversity and biomass of the microbial community in biocrusts in the Loess Plateau region of China".PLANT AND SOIL (2020):15.