Dynamics of soil specific enzyme activities and temperature sensitivities during grassland succession after farmland abandonment

doi:10.1016/j.catena.2020.105081

	Dynamics of soil specific enzyme activities and temperature sensitivities during grassland succession after farmland abandonment
	Xiao, Lie 2; Liu, Guobin 1,3; Li, Peng 2; Xue, Sha 1,3
刊名	CATENA
	2021-04-01
卷号	199 页码:11
关键词	Specific enzyme activity Rhizosphere effect Temperature sensitivity Secondary succession Grassland
ISSN号	0341-8162
DOI	10.1016/j.catena.2020.105081
通讯作者	Xue, Sha(xuesha100@163.com)
英文摘要	The influence of plant secondary succession on soil enzyme activities has been increasingly recognized recently. However, the characteristics of specific enzyme activities and temperature sensitivity (Q(10)) in the rhizosphere remain elusive. We collected rhizosphere and bulk soil samples from a secondary successional series (0, 7, 12, 17, 22, and 32 years after farmland abandonment, and a natural grassland reference) in a typical semi-arid ecosystems on the Loess Plateau of China. The potential activity of soil enzymes, including beta-1,4-glucosidase (BG), beta-1,4-N-acetylglucosaminidase (NAG), leucine aminopeptidase (LAP), and alkaline phosphatase (AP), was assayed at 37, 20 and 4 degrees C and expressed as activity per unit of soil organic carbon (specific enzyme activity). Q(10) values were calculated at 20-37 degrees C and 4-20 degrees C, respectively. The specific enzyme activities of BG, NAG, LAP and AP in bulk soil increased to a maximum at the 17-year site and then significantly decreased in older grasslands. In the rhizosphere, specific enzyme activities increased and then decreased along the successional gradient with significantly higher value at the 7-year site and the 17-year site. The Q(10) values of BG activity in bulk soil and the four enzyme's activities in rhizosphere soil were changed significantly along the successional gradients. In general, the Q(10) values at the two temperature ranges differed in bulk soil, but not in the rhizosphere soil. Along the plant successional gradient, the rhizosphere effects of specific enzyme activities gradually changed to negative values in the oldest sites. Our results indicate that plant secondary succession had different impacts on the enzyme activity and characteristics in the rhizosphere and bulk soil, and highlights the importance of temperature sensitivity and rhizosphere effects of enzyme activity along plant secondary successional gradients.
资助项目	National Natural Science Foundation of China[41701603] ; National Natural Science Foundation of China[51779204] ; National Natural Science Foundation of China[52022081] ; Shaanxi Province Innovation Talent Promotion Project Technology Innovation Team[2018TD-037] ; Natural Science Basic Research Plan in Shaanxi Province, China[2019JQ-743]
WOS关键词	MICROBIAL COMMUNITY COMPOSITION ; SECONDARY SUCCESSION ; EXTRACELLULAR ENZYMES ; BACTERIAL COMMUNITY ; ORGANIC-MATTER ; LOESS PLATEAU ; VEGETATION SUCCESSION ; NATURAL SUCCESSION ; SEASONAL-VARIATION ; BULK SOIL
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000608022600002
资助机构	National Natural Science Foundation of China ; Shaanxi Province Innovation Talent Promotion Project Technology Innovation Team ; Natural Science Basic Research Plan in Shaanxi Province, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136436]
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.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Shaanxi, 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	Xiao, Lie,Liu, Guobin,Li, Peng,et al. Dynamics of soil specific enzyme activities and temperature sensitivities during grassland succession after farmland abandonment[J]. CATENA,2021,199:11.
APA	Xiao, Lie,Liu, Guobin,Li, Peng,&Xue, Sha.(2021).Dynamics of soil specific enzyme activities and temperature sensitivities during grassland succession after farmland abandonment.CATENA,199,11.
MLA	Xiao, Lie,et al."Dynamics of soil specific enzyme activities and temperature sensitivities during grassland succession after farmland abandonment".CATENA 199(2021):11.