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自然殖民者有效地恢复了重金属污染的荒地

Lakshmi Pathak¹, Kavita Shah¹

¹Environmental Biotechnology Lab, No. 114C, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India.

International journal of phytoremediation

|June 7, 2024

概括

牛修正案改善了城市垃圾填埋场的土壤质量,但用天然植物重新植被对于减少重金属至关重要. 这种生态恢复方法提高了土壤的健康,并保护了印度的生物多样性.

科学领域:

环境科学环境科学
土壤科学土壤科学
生态毒理学生态毒理学

背景情况:

由于污染,盐化和营养损失,印度面临着严重的土地退化 (∼30%).
城市垃圾倾倒场表现出土壤质量不佳,包括pH,EC,温度升高和重金属污染 (Cr,Cd,Pb,Ni).

研究的目的:

评估牛修改对废物倾倒场土壤物理化学性质的影响.
评估自然殖民者的植物修复潜力,以减少重金属.
为荒地管理推综合生态恢复战略.

主要方法:

垃圾倾倒场的土壤质量 (牛前后修改) 与对照农业土壤的比较.
分析土壤的物理化学特性 (pH,EC,OC,NPK,CEC,水分,散装密度) 和重金属度.
评估七种天然植物物种中的重金属积累和转移 (生物积累因子,转移因子).

主要成果:

牛修正案改善了土壤水分,CEC和OC,但对散装密度和重金属的影响很小.
废物倾倒现场的多金属污染 (Cr,Cd,Pb,Ni) 超过了允许的限度.
像*Datura innoxia*,*Calotropis procera*和*Parthenium hysterophorus*这样的植物显示出大量的重金属积累,其中*Calotropis procera*被确定为潜在的Cd植物提取物.

结论:

仅仅是牛的修正案是不足以完全修复荒地.
建议采用综合方法,将牛修改和重新植被与本地过度积累植物相结合,以有效减少重金属和改善土壤健康.
生态恢复策略可以最大限度地降低生物多样性的风险,并减轻印度的土地退化.

关键词:

殖民者殖民者重金属重金属的使用.物理疗法物理疗法物理疗法恢复恢复恢复荒地荒地,荒地荒地

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