Spatial heterogeneity of urban soils:the case of the Beijing metropolitan region,China
作者机构：Center for Human-Environment System Sustainability(CHESS)State Key Laboratory of Earth Surface Processes and Resource Ecology(ESPRE)Beijing Normal UniversityBeijing 100875China Geography and PlanningUniversity at AlbanyState University of New YorkAlbanyNY 12222USA School of Life Sciences and Global Institute of SustainabilityArizona State UniversityTempeAZ 85287USA Chinese Research Academy of Environmental SciencesBeijing 100012China State Key Laboratory of Urban&Regional EcologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085P.R.China
出 版 物：《Ecological Processes》 (生态过程（英文）)
年 卷 期：2014年第3卷第1期
页 面：20-30页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：This research was supported by two projects-the‘Special Foundation of State Key Lab of Urban and Regional Ecology(grant SKLURE2013-1-01)’ the‘Foundation for The Recruitment Program of Global Experts of Beijing Normal University(257-107023)’
主 题：Urbanization Urban green spaces Soil properties Land use Urban ecology Beijing
摘 要：Introduction:Urban soils are large pools of carbon,nitrogen,and other elements,supporting plant growth,sustaining biogeochemical cycles,and serving as the foundation for maintaining ecosystem function and services of urban green spaces(UGS).Quantifying urban soil properties is essential for assessing urban ecosystem services and detecting *** spatial heterogeneity of urban soil properties,which may change with land use or urbanization,is crucial for understanding urban ecosystem ***:We collected 466 soil composite samples across the Beijing metropolitan region and then analyzed the heterogeneity of soil properties in UGS of Beijing metropolitan region by ANOVA along the urbanization gradient spanning different land ***:Our results show that soil properties vary considerably among land-use types and along the urban-rural *** moisture content,soil organic carbon(SOC),available phosphorus,available potassium,total nitrogen(TN),the ratio of SOC:TN(C/N),Pb,and Cu increased notably from suburbs to the urban core,while soil pH,bulk density,TN,Cr,Ni,and Mn were not significantly different across urbanization *** soil properties,except soil TN,Cu,Cr,Ni,exhibited significant differences between different land *** highest levels of soil nutrients and heavy metals were found in roadsides and residential areas among all the land ***:The spatial heterogeneity of urban soils in the Beijing metropolitan region is mainly attributable to the different land *** nutrient content has increased in UGS due to fertilization and *** of urban soils by heavy metals is due largely to traffic emissions and pollution by industrial and household *** human activities tend to augment urban soil nutrient pools to maximize certain ecosystem services,they may inadvertently compromise these and other services by increasing *** of urban soil spatial heterogeneity in UGS i
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