Estimation of Cadmium Contamination in Different Restoration Scenarios by RUSLE Model

Environment and Natural Resources Journal

Arisara Charoenpanyanet¹  Panlop Huttagosol² 

[1] Department of Geography, Faculty of Social Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;Department of Mining and Petroleum Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand;

关键词: rusle model;    soil loss;    cadmium contamination;    forest restoration;    mae tao watershed;   

DOI  :  10.32526/ennrj.18.4.2020.36

来源: DOAJ

【 摘 要 】

TheMaeTaowatershedofThailandfacedcadmium(Cd)contamination problems from zinc mining for a long time until the mining area was closed to decreasethelevelofCdconcentration.Thisstudyreproduced thepossible scenariosofCdcontaminationduetosoilloss.Fourscenariosofforest restoration were implemented in this study, all of which were calculated with the Revised Universal Soil Loss Equation (RUSLE) integrated withsatellite imageryandGeographicInformationSystems(GIS).Landsat8-OLIwas acquired and land use/land cover (LULC) was classified in each scenario. Soil loss maps were created. An inverse distance weighting (IDW) technique was used to estimate the concentration of Cd based on the field data consisting of 101 points of measured Cd concentration. Results from RUSLE model and IDW technique were combined to calculate Cd contamination due to soil loss for all fourscenarios.ResultsshowedthattherestorationofScenario3,forest restorationinoldandnewminingareasincooperationwithreservoir construction, helped decrease Cd contamination the most.The lowest level of Cd contamination from soil loss was found in this scenario by about 156 ha (total of Cd contamination by 165,924.32 ton/year).

【 授权许可】

Unknown