气候变化领域集成服务门户(CCPortal): Soil lifespans and how they can be extended by land use and management change

CCPortal

DOI	10.1088/1748-9326/aba2fd
	Soil lifespans and how they can be extended by land use and management change
	Evans D.L.; Quinton J.N.; Davies J.A.C.; Zhao J.; Govers G.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Human-induced soil erosion is a serious threat to global sustainability, endangering global food security, driving desertification and biodiversity loss, and degrading other vital ecosystem services. To help assess this threat, we amassed a global inventory of soil erosion rates consisting of 10 030 plot years of data from 255 sites under conventional agriculture and soil conservation management. We combined these with existing soil formation data to estimate soil sustainability expressed as a lifespan, here defined as the time taken for a topsoil of 30 cm to be eroded. We show that just under a third of conventionally managed soils in the dataset exhibit lifespans of <200 years, with 16% <100 years. Conservation measures substantially extend lifespan estimates, and in many cases promote soil thickening, with 39% of soils under conservation measures exhibiting lifespans exceeding 10 000 years. However, the efficacy of conservation measures is influenced by site-and region-specific variables such as climate, slope and soil texture. Finally, we show that short soil lifespans of <100 years are widespread globally, including some of the wealthiest nations. These findings highlight the pervasiveness, magnitude, and in some cases, the immediacy of the threat posed by soil erosion to near-Term soil sustainability. Yet, this work also demonstrates that we have a toolbox of conservation methods that have potential to ameliorate this issue, and their implementation can help ensure that the world's soils continue to provide for us for generations to come. © 2020 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Agricultural robots; Biodiversity; Ecosystems; Erosion; Food supply; Land use; Soils; Sustainable development; Textures; Conservation management; Conservation measures; Conservation methods; Conventional agricultures; Ecosystem services; Global food security; Global sustainability; Land use and managements; Soil conservation; biodiversity; desertification; food security; land use change; soil conservation; soil erosion; sustainability; topsoil
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153740
作者单位	Lancaster Environment Centre, Lancaster University, Lancashire LA1 4YQ, Lancaster, United Kingdom; Department of Geology Engineering and Geomatics, Chang'an University, Yantalu 120, Xi'an, 710054, China; Division of Geography, Department of Earth and Environmental Sciences, KU Leuven Leuven, 3000, Belgium
推荐引用方式 GB/T 7714	Evans D.L.,Quinton J.N.,Davies J.A.C.,et al. Soil lifespans and how they can be extended by land use and management change[J],2020,15(9).
APA	Evans D.L.,Quinton J.N.,Davies J.A.C.,Zhao J.,&Govers G..(2020).Soil lifespans and how they can be extended by land use and management change.Environmental Research Letters,15(9).
MLA	Evans D.L.,et al."Soil lifespans and how they can be extended by land use and management change".Environmental Research Letters 15.9(2020).