气候变化领域集成服务门户(CCPortal): Long-term soil quality and C stock effects of tillage and cover cropping in a conservation agriculture system

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DOI	10.1016/j.still.2024.106129
	Long-term soil quality and C stock effects of tillage and cover cropping in a conservation agriculture system
	Rocco, Sebastiano; Munkholm, Lars J.; Jensen, Johannes L.
发表日期	2024
ISSN	0167-1987
EISSN	1879-3444
起始页码	241
卷号	241
英文摘要	Conservation and regenerative agriculture are widely considered as approaches aiming at addressing challenges in relation to climate change and soil quality. In that respect, no tillage (NT) and use of cover crops (CCs) are seen as key elements in achieving the sustainability goals of these approaches, but the long-term individual and interactive effects of these elements remain unknown. We examined the impact of tillage (NT and mouldboard ploughing) combined with a fodder radish CC in continuous cereal cropping. Soil was sampled in the 0-10 and 10-20 cm layer after two decades of treatments in the CENTS experiment at AU Viborg (Denmark) situated on a sandy loam with 9% clay. We assessed soil structural quality, SOC stocks, clay dispersibility (CD), wet stability of aggregates (WSA) and soil pore characteristics. Neither tillage nor cover cropping affected the SOC stock in the 0-20 cm soil layer. No tillage improved CD, WSA and plant available water capacity in 0-10 cm depth as compared to ploughing. The marked improvement in CD and WSA of NT soils could not be explained by SOC per se, but rather positive effects ascribed to absence of disturbance. In contrast, soil porosity, especially in 10-20 cm depth, the fraction of soil volume represented by >30 mu m pores and gas diffusivity decreased, and NT soils resulted in a less good soil structural quality. The inclusion of CCs improved soil structural quality and the functionality of the soil macropore system. Hence, CCs have the potential to alleviate negative effects of NT on pore characteristics at macroscale. Furthermore, we found that the positive effects of NT on CD and WSA and of CCs on pore characteristics at macroscale were much more pronounced after long- (20 yrs NT; 13 yrs CC) than after medium -term (10 yrs NT; 5 yrs CC) underlining the value of long-term conservation agriculture experiments.
英文关键词	Conservation agriculture; Cover cropping; No tillage; Soil structure; Sustainable agriculture
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:001231943900001
来源期刊	SOIL & TILLAGE RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304043
作者单位	Aarhus University; University of Padua; Aarhus University
推荐引用方式 GB/T 7714	Rocco, Sebastiano,Munkholm, Lars J.,Jensen, Johannes L.. Long-term soil quality and C stock effects of tillage and cover cropping in a conservation agriculture system[J],2024,241.
APA	Rocco, Sebastiano,Munkholm, Lars J.,&Jensen, Johannes L..(2024).Long-term soil quality and C stock effects of tillage and cover cropping in a conservation agriculture system.SOIL & TILLAGE RESEARCH,241.
MLA	Rocco, Sebastiano,et al."Long-term soil quality and C stock effects of tillage and cover cropping in a conservation agriculture system".SOIL & TILLAGE RESEARCH 241(2024).