Utilization of Humus-amended Green Soil for Stabilized Landfill in Tibet and Risk Evaluation  

作　　者：Xinru SUN Huijun XI Weipan LIU Di WU Peng ZHOU Zeng DAN 

机构地区：[1]School of Ecology and Environment,Tibet University,Lhasa 850000,China

出　　处：《Meteorological and Environmental Research》2024年第6期60-66,共7页气象与环境研究(英文版)

基　　金：Supported by Natural Science Foundation of Tibet Autonomous Region(XZ202301ZR0051G);Innovation and Entrepreneurship Program for Students of Tibet University(202510694038).

摘　　要：[Objectives]With the rapid development of the economy and urbanization,the resource utilization of humus from landfills in Tibet faces significant challenges.This paper aims to study the utilization of humus-amended green soil for stabilized landfill in Tibet and evaluate its risk.[Methods]This paper focuses on the humus soil of a stabilized landfill in Lhasa,conducting soil chemical characterization and mixed amelioration tests with various amelioration materials to evaluate the potential of the treated soil for application in greening and its associated ecological risks.[Results]The findings indicate that the humus soil is nutrient-rich;however,the levels of heavy metals are concerning.By experimenting with different ratios of fly ash and green soil,it was determined that a 5:5 ratio markedly improved the water permeability and retention of the humus soil,significantly reduced the heavy metal content,and lowered the ecological risk index,thus demonstrating the effectiveness of the amelioration measures.[Conclusions]This study provides an experimental basis for the resource utilization of landfill humus,highlights the necessity of creating eco-friendly soil,and holds substantial theoretical and practical significance for the sustainable development of Tibet and similar regions.

关 键 词：Landfill humus soil Improvement Greenfield soil Ecological risk 

分 类 号：X70[环境科学与工程—环境工程]