气候变化领域集成服务门户(CCPortal): Drying and rewetting effects on organic matter mineralisation of contrasting soils after 36 years of storage

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DOI	10.1016/j.geoderma.2019.01.053
	Drying and rewetting effects on organic matter mineralisation of contrasting soils after 36 years of storage
	Jones A.R.; Gupta V.V.S.R.; Buckley S.; Brackin R.; Schmidt S.; Dalal R.C.
发表日期	2019
ISSN	167061
起始页码	12
结束页码	19
卷号	342
英文摘要	Soil incubation studies commonly use archived, dry stored soil samples. Numerous studies have detected a profound impact of dry storage on soil microbial community composition and activity. However, comparatively few studies have explored the impact of storage on the short-term mineralisation of soil organic matter (SOM) after moistening dry soils to revive and stabilise microbial activity (“pre-incubation”). We examined whether pre-incubation of dry stored soil of contrasting texture (Alfisol and Vertisol) can recover native soil microbial functions in fresh soil or soil stored for 3 weeks, 3 or 36 years. The oldest samples had a delayed CO 2 response after moistening, but matched CO 2 production rates of younger samples within hours. The two soil types displayed contrasting CO 2 emission responses after moistening; the Alfisols had a rapid but short-lived CO 2 emission peak (the so-called “Birch Effect”) while the Vertisols demonstrated a long, sustained release of CO 2 reflecting its higher abundance of microsite abundance and microaggregates which may protect SOM and microorganisms during adverse conditions like drying. After 10 days of pre-incubation, older Alfisol samples had higher protease activity and response to amino acid addition demonstrating altered microbial physiological responses relating to nitrogen (N) compared to fresher counterparts. However, such responses in Vertisols were unchanged suggesting high clay soils with high potential microsite abundance may improve preservation of soil N functions through dry storage or even drought. This work highlights both limitations and possibilities of incubating dry archived soils for SOM mineralisation studies. Elsevier B.V.
英文关键词	Alfisol; Microcosm; Pre-incubation; Soil incubation; Soil microbial function; Soil storage; Vertisol
scopus关键词	Biogeochemistry; Biological materials; Carbon dioxide; Clay; Microorganisms; Organic compounds; Physiological models; Textures; Alfisol; Microcosm; Pre-incubation; Soil incubation; Soil microbial; Soil storage; Vertisols; Mineralogy; abundance; Alfisol; amino acid; biomineralization; carbon sequestration; community composition; microbial activity; microbial community; microcosm; physiological response; rewetting; soil carbon; soil microorganism; soil organic matter; Vertisol
来源期刊	Geoderma
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176427
作者单位	School of Agriculture and Food Science, The University of Queensland, St Lucia, Qld 4072, Australia; CSIRO Agriculture and Food, Locked Bag No. 2, Glen Osmond, SA 5064, Australia
推荐引用方式 GB/T 7714	Jones A.R.,Gupta V.V.S.R.,Buckley S.,等. Drying and rewetting effects on organic matter mineralisation of contrasting soils after 36 years of storage[J],2019,342.
APA	Jones A.R.,Gupta V.V.S.R.,Buckley S.,Brackin R.,Schmidt S.,&Dalal R.C..(2019).Drying and rewetting effects on organic matter mineralisation of contrasting soils after 36 years of storage.Geoderma,342.
MLA	Jones A.R.,et al."Drying and rewetting effects on organic matter mineralisation of contrasting soils after 36 years of storage".Geoderma 342(2019).