干旱区生态环境知识资源中心(Arid): Differentiating biological and chemical factors of top and deep soil carbon sequestration in semi-arid tropical Inceptisol: an outcome of structural equation modeling

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DOI	10.1080/17583004.2020.1796143
	Differentiating biological and chemical factors of top and deep soil carbon sequestration in semi-arid tropical Inceptisol: an outcome of structural equation modeling
	Ghosh, Avijit; Singh, Amit K.; Kumar, Sunil; Manna, M. C.; Bhattacharyya, Ranjan; Agnihortri, Rajesh; Gahlaud, Sanjay K. Singh; Sannagoudar, Manjanagouda S.; Gautam, Kamini; Kumar, R., V; Chaudhari, Suresh K.
通讯作者	Ghosh, A
来源期刊	CARBON MANAGEMENT
ISSN	1758-3004
EISSN	1758-3012
出版年	2020
卷号	11 期号:5 页码:441-453
英文摘要	Though soils sequester large amounts of carbon (C), variations in physical and chemical characteristics of top and deep layers necessitate the study of factors governing topsoil and deep soil C sequestration to predict land-use changes to alleviate climate change. Land-use systems involving pasture, trees, trees pasture and fallow were considered. The upper soil (0-15 cm) had similar to 12, 34 and 59% higher microbial biomass C than the 15-30, 30-45 and 45-60 cm layers, respectively. Fluorescein diacetate (FDA) and dehydrogenase activities had similar trends. Across the land uses, topsoil layers had similar to 17% lower silt + clay (s + c) content than deep layers. Amorphous iron content significantly increased with soil depth. In the top two soil layers, s + c accounted for similar to 19-30% of total soil organic carbon (SOC); in the next two layers s + c could store >30% of total SOC. Stepwise regression analysis revealed FDA to be the most significant biological driver for SOC sequestration. Structural equation modeling showed that biological factors controlled C sequestration in topsoil layers, while s + c and amorphous iron were the major factors of C sequestration in deep layers. Current land uses are largely deficient of SOC and have the potential to store an additional22 Mg CO(2)e per ha.
英文关键词	Carbon stock land-use systems soil enzymes microbial biomass C silt plus clay
类型	Article
语种	英语
收录类别	SSCI
WOS记录号	WOS:000555656200001
WOS关键词	ORGANIC-MATTER ; STABILIZATION ; DECOMPOSITION ; SATURATION ; FRACTIONS ; CAPACITY ; DYNAMICS ; QUALITY ; CLAY
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325394
作者单位	[Ghosh, Avijit; Singh, Amit K.; Kumar, Sunil; Sannagoudar, Manjanagouda S.; Gautam, Kamini; Kumar, R., V] ICAR Indian Grassland & Fodder Res Inst, Grassland & Silvipasture Management Div, Jhansi 284003, Uttar Pradesh, India; [Manna, M. C.] ICAR Indian Inst Soil Sci, Soil Biol Div, Bhopal 462038, India; [Bhattacharyya, Ranjan] ICAR Indian Agr Res Inst, Ctr Environm Sci & Climate Resilient Agr, New Delhi 110012, India; [Agnihortri, Rajesh; Gahlaud, Sanjay K. Singh] Birbal Sahni Inst Paleosci, Radiocarbon Dating & Isotope Characterizat Lab, Lucknow 226007, Uttar Pradesh, India; [Chaudhari, Suresh K.] Indian Council Agr Res, New Delhi 110012, India
推荐引用方式 GB/T 7714	Ghosh, Avijit,Singh, Amit K.,Kumar, Sunil,et al. Differentiating biological and chemical factors of top and deep soil carbon sequestration in semi-arid tropical Inceptisol: an outcome of structural equation modeling[J],2020,11(5):441-453.
APA	Ghosh, Avijit.,Singh, Amit K..,Kumar, Sunil.,Manna, M. C..,Bhattacharyya, Ranjan.,...&Chaudhari, Suresh K..(2020).Differentiating biological and chemical factors of top and deep soil carbon sequestration in semi-arid tropical Inceptisol: an outcome of structural equation modeling.CARBON MANAGEMENT,11(5),441-453.
MLA	Ghosh, Avijit,et al."Differentiating biological and chemical factors of top and deep soil carbon sequestration in semi-arid tropical Inceptisol: an outcome of structural equation modeling".CARBON MANAGEMENT 11.5(2020):441-453.