气候变化领域集成服务门户(CCPortal): Urbanization drives convergence in soil profile texture and carbon content

CCPortal

DOI	10.1088/1748-9326/abbb00
	Urbanization drives convergence in soil profile texture and carbon content
	Herrmann D.L.; Schifman L.A.; Shuster W.D.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Urban development has driven extensive modification of the global landscape. This shift in land use and land cover alters ecological functioning, and thereby affects sustainable management agendas. Urbanization fundamentally reshapes the soils that underlay landscapes, and throughout the soil profile, extends impacts of urbanization far below the landscape surface. The impacts of urbanization on deeper soils that are beyond the reach of regular land management are largely unknown, and validation of general theories of convergent ecosystem properties are thwarted by a dearth of both level of measurement effort and the substantial heterogeneity in soils and urban landscapes. Here, we examined two soil properties with strong links to ecological functioning - carbon and mineral-fraction particle size - measured in urban soils, and compared them to their pre-urbanization conditions across a continental gradient encompassing global soil diversity. We hypothesized that urbanization drove convergence of soils properties from heterogeneous pre-urban conditions towards homogeneous urban conditions. Based on our observations, we confirm the hypothesis. Both soil carbon and particle size converged toward an intermediate value in the full data distribution, from pre-urban to urban conditions. These outcomes in urban soils were observed to uniformly be fine textured soils with overall lower carbon content. Although these properties are desirable for supporting urban infrastructure (e.g. buildings, pipes), they constrain the potential to render ecosystem services. Since soil profile texture and carbon content were convergent and observed across 11 cities, we suggest that these property profiles can be used as a universal urban soil profile to: 1) provide a clear prediction for how urbanization will shift soil properties from pre-urban conditions, 2) facilitate the adoption of commonly-accepted soil profiles for process models, and 3) offer a reference point to test against urban management strategies and how they impact soil resources. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	convergence; soil carbon; soil particle size; urban critical zone; urban ecosystem
语种	英语
scopus关键词	Carbon; Digital storage; Ecosystems; Land use; Particle size; Soil testing; Soils; Textures; Urban growth; Ecological functioning; Ecosystem services; Fine-textured soils; Land use and land cover; Property profiles; Sustainable management; Urban development; Urban infrastructure; Soil surveys; soil carbon; soil profile; soil texture; urbanization
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/153537
作者单位	Oak Ridge Inst. for Sci. and Educ. Res. Participant Prog. with Natl. Risk Mgmt. Research Laboratory, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, United States; Natl. Research Council Research Associate Program with National Risk Management Research Laboratory, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, United States; National Risk Management Research Laboratory, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, United States
推荐引用方式 GB/T 7714	Herrmann D.L.,Schifman L.A.,Shuster W.D.. Urbanization drives convergence in soil profile texture and carbon content[J],2020,15(11).
APA	Herrmann D.L.,Schifman L.A.,&Shuster W.D..(2020).Urbanization drives convergence in soil profile texture and carbon content.Environmental Research Letters,15(11).
MLA	Herrmann D.L.,et al."Urbanization drives convergence in soil profile texture and carbon content".Environmental Research Letters 15.11(2020).