Disentangling the direct and indirect effects of cropland abandonment on soil microbial activity in grassland soil at different depths

doi:10.1016/j.catena.2020.104774

	Disentangling the direct and indirect effects of cropland abandonment on soil microbial activity in grassland soil at different depths
	Xu, Hongwei 1,2; Qu, Qing 3; Chen, Yanhua 4; Wang, Minggang 5; Liu, Guobin 1,2,3; Xue, Sha 1,2,3; Yang, Xiaomei 1,3,6
刊名	CATENA
	2020-11-01
卷号	194 页码:10
关键词	Plant-soil interactions Vegetation restoration Soil enzyme activity Soil nutrients Structural equation models
ISSN号	0341-8162
DOI	10.1016/j.catena.2020.104774
通讯作者	Xue, Sha(xuesha100@163.com)
英文摘要	Cropland abandonment strongly affects plant-soil interactions. However, knowledge remains limited about how the production and diversity of plants and soil physicochemical parameters drive changes in soil microbial activity (such as microbial biomass, respiration, and enzyme activity) after cropland abandonment. Here, we investigated a grassland restoration chronosequence (0-30 years) to determine the dynamics of soil microbial biomass, respiration, and enzyme activity in the Loess Hilly, Region (China). Overall, cropland abandonment caused an increase in soil microbial activity primarily in the 0-20 cm soil layers. The metabolic quotient in the 0-10 cm layer decreased linearly with time since abandonment (recovery years). Structural equation models showed that recovery years directly and indirectly affected changes to soil microbial activity. Plant species richness, aboveground biomass, and soil organic carbon explained a large proportion of the variability in soil microbial activity in the 0-20 cm layer. However, the variability in soil microbial activity was mostly explained by plant species richness, belowground biomass, and soil total nitrogen in the 20-50 cm layers. Our results indicate that during recovery after cropland abandonment, changes in soil microbial activity are driven by plant characteristics and soil physicochemical parameters, with different drivers at different soil depths.
资助项目	Natural Science Foundation of China[41771557] ; National Key Research and Development Program of China[2016YFC0501707] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-2017]
WOS关键词	ENZYME-ACTIVITIES ; ORGANIC-CARBON ; LOESS PLATEAU ; ECOENZYMATIC STOICHIOMETRY ; NUTRIENT LIMITATION ; RHIZOSPHERE SOIL ; BIOMASS ; DIVERSITY ; RESPONSES ; FOREST
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000566699000078
资助机构	Natural Science Foundation of China ; National Key Research and Development Program of China ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156825]
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing 100097, Peoples R China 5.Beijing Forestry Univ, Res Ctr Forest Management Engn State Forestry & G, Beijing 100083, Peoples R China 6.Wageningen Univ & Res, Soil Phys & Land Management, NL-6700 AA Wageningen, Netherlands
推荐引用方式 GB/T 7714	Xu, Hongwei,Qu, Qing,Chen, Yanhua,et al. Disentangling the direct and indirect effects of cropland abandonment on soil microbial activity in grassland soil at different depths[J]. CATENA,2020,194:10.
APA	Xu, Hongwei.,Qu, Qing.,Chen, Yanhua.,Wang, Minggang.,Liu, Guobin.,...&Yang, Xiaomei.(2020).Disentangling the direct and indirect effects of cropland abandonment on soil microbial activity in grassland soil at different depths.CATENA,194,10.
MLA	Xu, Hongwei,et al."Disentangling the direct and indirect effects of cropland abandonment on soil microbial activity in grassland soil at different depths".CATENA 194(2020):10.