Stratification ratio of rhizosphere soil microbial index as an indicator of soil microbial activity over conversion of cropland to forest

doi:10.1016/j.catena.2020.104761

	Stratification ratio of rhizosphere soil microbial index as an indicator of soil microbial activity over conversion of cropland to forest
	Qu, Qing 2; Xu, Hongwei 1,3; Xue, Sha 1,2,3; Liu, Guobin 1,2,3
刊名	CATENA
	2020-12-01
卷号	195 页码:11
关键词	Vegetation recovery Soil microbial activity Stratification ratios Microbial metabolic quotient Loess hilly region
ISSN号	0341-8162
DOI	10.1016/j.catena.2020.104761
通讯作者	Xue, Sha(xuesha100@163.com)
英文摘要	Studying soil microbial activity is important for evaluating soil microbial conditions and soil nutrient cycling. This study examined how the conversion of cropland to forest affects soil microbial activity and stratification ratios of the rhizosphere soil microbial index (RSMI), as well as to clarify the relationship between the stratification ratios of RSMI and soil microbial activity. Soils beneath two typical vegetation types of shrubland (Caragana korshinskii and Hippophae rhamnoides) and forestland (Robinia pseudoacacia) in the Loess Hilly region of China that had recovered for up to 47 and 56 years, respectively, were evaluated at four soil depths (0-10, 10-20, 20-30, and 30-50 cm). Our findings showed that the conversion of cropland to forest mainly affected soil microbial activity in the surface layer (0-10 cm), in which microbial biomass, enzyme activity (saccharase, urease, and phosphatase), and RSMI increased over time, whereas the microbial metabolic quotient decreased. After the conversion from cropland, recovery time (years) caused an increase in the SRR1 (the RSMI ratio in 0-10 cm versus 10-20 cm layer) of shrubland (by 40.56-108.14%, compared to 0 year) and forestland (by 18.48-79.71%, compared to 0 year). Overall, SRR1 was positively correlated with RSMI in both conversion types. In conclusion, the stratification ratios of the rhizosphere soil microbial index of SRR1 provided good indicators of soil microbial activity and were significantly enhanced by the process of the conversion from cropland to forest.
资助项目	Natural Science Foundation of China[41771557] ; National Key Research and Development Program of China[2016YFC0501707]
WOS关键词	ENZYME-ACTIVITIES ; GREEN PROGRAM ; LOESS PLATEAU ; LAND-USE ; BIOMASS ; QUALITY ; CHRONOSEQUENCE ; CARBON ; GRAIN ; PLANTATION
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000580366300023
资助机构	Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156581]
专题	中国科学院地理科学与资源研究所
通讯作者	Xue, Sha
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Qu, Qing,Xu, Hongwei,Xue, Sha,et al. Stratification ratio of rhizosphere soil microbial index as an indicator of soil microbial activity over conversion of cropland to forest[J]. CATENA,2020,195:11.
APA	Qu, Qing,Xu, Hongwei,Xue, Sha,&Liu, Guobin.(2020).Stratification ratio of rhizosphere soil microbial index as an indicator of soil microbial activity over conversion of cropland to forest.CATENA,195,11.
MLA	Qu, Qing,et al."Stratification ratio of rhizosphere soil microbial index as an indicator of soil microbial activity over conversion of cropland to forest".CATENA 195(2020):11.