气候变化领域集成服务门户(CCPortal): An agricultural practise with climate and food security benefits: “Claying” with kaolinitic clay subsoil decreased soil carbon priming and mineralisation in sandy cropping soils

CCPortal

DOI	10.1016/j.scitotenv.2019.134488
	An agricultural practise with climate and food security benefits: “Claying” with kaolinitic clay subsoil decreased soil carbon priming and mineralisation in sandy cropping soils
	Grover S.P.; Butterly C.R.; Wang X.; Gleeson D.B.; Macdonald L.M.; Hall D.; Tang C.
发表日期	2020
ISSN	489697
卷号	709
英文摘要	As the agricultural sector seeks to feed a growing global population, climate-smart agriculture offers opportunities to concurrently mitigate climate change by reducing greenhouse gas emissions and/or increasing carbon storage in soils. This study examined the potential for clay addition to reduce CO2 emissions from plant residues and soil organic matter in a sandy soil. Soils were sourced from a 15-year-old field trial where claying (200 t ha−1) had already demonstrated improvements in water infiltration, grain yield and profits. Isotopically labelled plant residues (wheat, canola, or pea) were used to separate residue-derived and soil-derived CO2 sources from a nil-clay control, a historically clayed, and two freshly created soils with either high (10%) or low (3%) subsoil clay additions. Laboratory incubations demonstrated that historically clayed soils released less CO2 from plant residues and soil organic matter. Clay addition also decreased the priming effect of adding fresh residue to soils. The results from clay experimentally added in the laboratory varied. Differences in chemical and biological indicators (pH, microbial biomass C and N, extractable organic C and N, NO3 −, NH4 +, abundance of bacterial, archaeal, fungal, LMCO, GH48 and CbhI genes) did not correlate with patterns of CO2 emissions across treatments. While claying practices have previously demonstrated benefits to crop productivity, this research demonstrates long-term changes in carbon-cycling that could promote greater carbon sequestration. Elsevier B.V.
英文关键词	Clay; Climate change; Food production; Microbial community; Priming; Soil organic matter
scopus关键词	Biogeochemistry; Carbon dioxide; Clay; Climate change; Food supply; Forestry; Gas emissions; Greenhouse gases; Indicators (chemical); Organic compounds; Carbon sequestration; Carbon storage in soils; Chemical and biologicals; Food production; Microbial biomass C and N; Microbial communities; Priming; Soil organic matters; Soils; carbon; kaolin; agricultural practice; agricultural soil; carbon sequestration; climate change; food production; food security; kaolinite; microbial community; mineralization; sandy soil; soil carbon; soil organic matter; subsoil; agricultural procedures; Article; carbon sequestration; climate change; controlled study; crop; food security; mineralization; priority journal; sandy soil; agriculture; catering service; clay; sand; soil; Archaea; Bacteria (microorganisms); Brassica napus var. napus; Pisum sativum; Triticum aestivum; Agriculture; Carbon; Clay; Food Supply; Kaolin; Sand; Soil
来源期刊	Science of the Total Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176949
作者单位	Department of Animal, Plant & Soil Sciences, AgriBio, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia; School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; School of Agriculture and Environment, The University of Western Australia, Crawley, WA 6009, Australia; CSIRO Agriculture & Food, Glen OsmondSA 5064, Australia; Western Australian Department of Primary Industries and Regional Development, Esperance, WA 6450, Australia
推荐引用方式 GB/T 7714	Grover S.P.,Butterly C.R.,Wang X.,等. An agricultural practise with climate and food security benefits: “Claying” with kaolinitic clay subsoil decreased soil carbon priming and mineralisation in sandy cropping soils[J],2020,709.
APA	Grover S.P..,Butterly C.R..,Wang X..,Gleeson D.B..,Macdonald L.M..,...&Tang C..(2020).An agricultural practise with climate and food security benefits: “Claying” with kaolinitic clay subsoil decreased soil carbon priming and mineralisation in sandy cropping soils.Science of the Total Environment,709.
MLA	Grover S.P.,et al."An agricultural practise with climate and food security benefits: “Claying” with kaolinitic clay subsoil decreased soil carbon priming and mineralisation in sandy cropping soils".Science of the Total Environment 709(2020).