Dynamic capacity modelling of soil environment carrying capacity, and developing a soil quality early warning framework for development land in China

JOURNAL OF CLEANER PRODUCTION

卷:257

Article

Li, Xiaonuo¹  Cundy, Andrew B.²  Chen, Weiping^1,3  Liu, Rui⁴  Lv, Sidan⁵ 

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Lab Soil Environm Sci & Technol, Beijing 100085, Peoples R China

[2] Univ Southampton, Sch Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England

[3] Univ Chinese Acad Sci, Coll Resource & Environm, Beijing 100085, Peoples R China

[4] Henan Acad Sci, Acad Sci & Technol Innovat Strategy, Zhengzhou 450002, Peoples R China

[5] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China

关键词: Environmental capacity;    Risk management;    Prediction and early warning;    Soil pollution prevention and control;   

DOI  :  10.1016/j.jclepro.2020.120450

来源: Elsevier

【 摘 要 】

The knowledge of soil environmental quality and its changing trends is important for safe and sustainable land utilization. However, comprehensive information on soil environment carrying capacity, involving environmental, economic and social pressures, is relatively rare. In this study, a modified dynamic capacity model is developed to estimate soil environment carrying capacity in terms of a combined consideration of soil environment capacity, cumulative input/output rate and risk characteristics. Based on the method proposed, this paper demonstrates the current pollution status and remaining soil capacity of the Beijing urban area, and establishes a conceptual early warning model for soil environmental quality, to predict time-dependent changing patterns of soil pollutants under different accumulation scenarios. The results showed that for Beijing soil environmental carrying capacity varied with land use type and pollutant. Compared with Cu, Zn and Pb, Cd posed the greatest threat to soil environmental carrying capacity in both residential areas and green parks. Heavy metal carrying capacity in soils in built-up areas in Beijing was not overloaded currently, and will not deteriorate significantly over the short-to medium-term in a hypothetical decreased input scenario. The method proposed provides a simple, cost-effective, and quantitative tool for mapping soil quality level, and assessing the need for risk management measures, in China and elsewhere. Crown Copyright (C) 2020 Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free