气候变化领域集成服务门户(CCPortal): Manure increases soil organic carbon most when allocated to annual cropping

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DOI	10.1016/j.catena.2024.107844
	Manure increases soil organic carbon most when allocated to annual cropping
	Joona, Juuso; Liski, Eero; Kahiluoto, Helena
发表日期	2024
ISSN	0341-8162
EISSN	1872-6887
起始页码	238
卷号	238
英文摘要	Soil carbon sequestration has a great potential in climate change mitigation. To maximise carbon stocks in northern agricultural soils, the carbon sequestration determinants of manure application are crucial. We quantified the effect of manure on soil organic carbon (SOC) depending on the application rate, proportion of leys relative to annuals in crop rotation, and soil texture. We compared the steady-state SOC concentration under farm-yard manure application to a control treatment with no manure application based on 56 individual longterm experiments at 27 locations north of 50 degrees north latitude. At a low application rate of manure such as 0.7 Mg C/ha/y, SOC gradually increased with increasing ley proportions. At a moderate manure rate, such as 1.3 Mg C/ha/y, an increase in the ley proportion led to a decreasing growth of, or even a decrease in, SOC. At a low fixed ley proportion in crop rotation such as 20 %, SOC linearly increased with an increasing manure application rate. As the proportion of leys increased, saturation occurred at a certain ley proportion depending on soil texture. When leys occurred on sandy soils more than once out of seven years and the proportion of leys in crop rotation on clay soils was higher than 45 %, increasing the manure application rate led to decreasing SOC accrual. Compared to the absence of manure application, high manure rates even decreased SOC. We conclude that manure application in crop rotation with a low ley proportion maximises SOC accrual in the topsoil. The most effective manure application rate and ley proportion leys in regard to SOC in the northern agricultural landscape can be determined using a statistical model that we developed, depending on the management system and soil texture.
英文关键词	Farm -yard manure; Ley farming; SOC; Crop rotation; Soil texture; Soil carbon saturation
语种	英语
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:001172057500001
来源期刊	CATENA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290049
作者单位	University of Helsinki; Natural Resources Institute Finland (Luke); University of Helsinki
推荐引用方式 GB/T 7714	Joona, Juuso,Liski, Eero,Kahiluoto, Helena. Manure increases soil organic carbon most when allocated to annual cropping[J],2024,238.
APA	Joona, Juuso,Liski, Eero,&Kahiluoto, Helena.(2024).Manure increases soil organic carbon most when allocated to annual cropping.CATENA,238.
MLA	Joona, Juuso,et al."Manure increases soil organic carbon most when allocated to annual cropping".CATENA 238(2024).