The Combination of Lime and Plant Species Effects on Trace Metals (Copper and Cadmium) in Soil Exchangeable Fractions and Runoff in the Red Soil Region of China
Open Access
- 7 July 2021
- journal article
- research article
- Published by Frontiers Media SA in Frontiers in Environmental Science
Abstract
The water-soluble heavy metal ions in contaminated soil may enter aquatic ecosystem through runoff, thus causing negative impact on the water environment. In this study, a two-year in situ experiment was carried out to explore an effective way to reduce the runoff erosion and water-soluble copper (Cu) and cadmium (Cd) in a contaminated soil (Cu: 1,148 mg kg−1, Cd: 1.31 mg kg−1) near a large Cu smelter. We evaluated the ability to influence soil properties by four Cu-tolerance plant species (Pennisetum sp., Elsholtzia splendens, Vetiveria zizanioides, Setaria pumila) grown in a contaminated acidic soil amended with lime. The results show that the addition of lime can significantly reduce the exchangeable fraction (EXC) of Cu and Cd in soil (81.1–85.6% and 46.3–55.9%, respectively). Plant species cannot change the fraction distributions of Cu and Cd in the lime-amended soils, but they can reduce the runoff generation by 8.39–77.0%. Although water-soluble Cu concentrations in the runoff were not significantly differed and water-soluble Cd cannot be detected among the four plant species, the combined remediation can significantly reduce 35.9–63.4% of Cu erosion to aquatic ecosystem, following the order: Pennisetum sp. > Elsholtzia splendens > Vetiveria zizanioides > Setaria pumila. The implication of this study would provide valuable insights for contaminated soil management and risk reduction in the Cu and Cd contaminated regions.Funding Information
- Nanyang Normal University (2018ZX018)
This publication has 33 references indexed in Scilit:
- Soil heavy metal contamination and health risks associated with artisanal gold mining in Tongguan, Shaanxi, ChinaEcotoxicology and Environmental Safety, 2017
- Immobilization of copper and cadmium by hydroxyapatite combined with phytoextraction and changes in microbial community structure in a smelter-impacted soilRSC Advances, 2016
- Evaluation of silkworm excrement and mushroom dreg for the remediation of multiple heavy metal/metalloid contaminated soil using pakchoiEcotoxicology and Environmental Safety, 2016
- Infiltration and Runoff Generation Under Various Cropping Patterns in the Red Soil Region of ChinaLand Degradation & Development, 2015
- Grass hedge effects on controlling soil loss from concentrated flow: A case study in the red soil region of ChinaSoil and Tillage Research, 2015
- Short‐term effects of biochar on soil heavy metal mobility are controlled by intra‐particle diffusion and soil pH increaseEuropean Journal of Soil Science, 2013
- Modelling Post‐Tree‐Harvesting Soil Erosion and Sediment Deposition Potential in the Turano River Basin (Italian Central Apennine)Land Degradation & Development, 2013
- USING THE 137 Cs TECHNIQUE TO STUDY THE EFFECT OF SOIL REDISTRIBUTION ON SOIL ORGANIC CARBON AND TOTAL NITROGEN STOCKS IN AN AGRICULTURAL CATCHMENT OF NORTHEAST CHINALand Degradation & Development, 2012
- Heavy metals in agricultural soils of the Pearl River Delta, South ChinaEnvironmental Pollution, 2001
- AN EXAMINATION OF THE DEGTJAREFF METHOD FOR DETERMINING SOIL ORGANIC MATTER, AND A PROPOSED MODIFICATION OF THE CHROMIC ACID TITRATION METHODSoil Science, 1934