干旱区生态环境知识资源中心(Arid): Soil Microbial Metabolic Quotient in Inner Mongolian Grasslands: Patterns and Influence Factors

Arid

DOI	10.1007/s11769-019-1084-5
	Soil Microbial Metabolic Quotient in Inner Mongolian Grasslands: Patterns and Influence Factors
	Cao Yingqiu 1; Xu Li 2; Zhang Zhen 1; Chen Zhi 2; He Nianpeng 2,3,4,5
通讯作者	Xu Li ; Zhang Zhen
来源期刊	CHINESE GEOGRAPHICAL SCIENCE
ISSN	1002-0063
EISSN	1993-064X
出版年	2019
卷号	29 期号:6 页码:1001-1010
英文摘要	Microbial metabolic quotient (MMQ) is the rate of soil microbial respiration per unit of microbial biomass, and represents the capacity of soil microbes to utilize soil organic matter. Understanding the regional variation and determinants of MMQ can help predict the responses of soil respiration rate to global climate change. Accordingly, we measured and analyzed MMQ-related data (e.g., soil basic respiration rate at 20 degrees C and soil microbial biomass) from 17 grassland sites, which located in meadow steppe, typical steppe, and desert steppe along a 1000-km transect across the Inner Mongolian grasslands, China. Results showed that MMQ varied significantly among the different grassland types (P < 0.05; desert > typical > meadow) and decreased from southwest to northeast (r = - 0.81) with increasing latitude (r = - 0.50), and with increasing mean annual precipitation (r = - 0.69). Precipitation accounted for 56% of the total variation in MMQ, whereas temperature accounted for 26%. MMQ was negatively correlated with precipitation across the Inner Mongolian grasslands. Therefore, climate change, especially in regard to precipitation, may influence soil microbial respiration and soil carbon dynamics through altering MMQ. These results highlighted the importance of spatial patterns in MMQ for accurately evaluating the responses of soil respiration to climate change at regional and global scales.
英文关键词	soil respiration soil microbial biomass carbon precipitation temperature Inner Mongolian grassland
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000501500500008
WOS关键词	ORGANIC-MATTER DECOMPOSITION ; TEMPERATURE SENSITIVITY ; ENZYME-ACTIVITIES ; BIOMASS ; RESPIRATION ; PRECIPITATION ; COMMUNITIES ; TURNOVER ; CARBON ; MINERALIZATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-12-01
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311094
作者单位	1.Anhui Agr Univ, Resources & Environm Coll, Hefei 230036, Anhui, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 4.Northeast Normal Univ, Inst Grassland Sci, Changchun 130024, Jilin, Peoples R China; 5.Minist Educ, Key Lab Vegetat Ecol, Changchun 130024, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Cao Yingqiu,Xu Li,Zhang Zhen,et al. Soil Microbial Metabolic Quotient in Inner Mongolian Grasslands: Patterns and Influence Factors[J]. 中国科学院地理科学与资源研究所,2019,29(6):1001-1010.
APA	Cao Yingqiu,Xu Li,Zhang Zhen,Chen Zhi,&He Nianpeng.(2019).Soil Microbial Metabolic Quotient in Inner Mongolian Grasslands: Patterns and Influence Factors.CHINESE GEOGRAPHICAL SCIENCE,29(6),1001-1010.
MLA	Cao Yingqiu,et al."Soil Microbial Metabolic Quotient in Inner Mongolian Grasslands: Patterns and Influence Factors".CHINESE GEOGRAPHICAL SCIENCE 29.6(2019):1001-1010.