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城市化对土壤重金属积累的影响和使用Glomalin相关的土壤蛋白质进行改善

Jiamei Tu^1,2, Foyi Zhang³, Fei Huang^1,2

¹College of Forestry, College of Art and Landscape, Jiangxi Agricultural University, Nanchang, 330045, China.

Scientific reports

|July 2, 2025

概括

与素相关的土壤蛋白 (GRSP) 增强了城市土壤中的重金属吸附. 然而,城市化减少了GRSP含量及其封存潜力,影响了土壤质量.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物地质化学生物地质化学

背景情况:

谷氨酸相关的土壤蛋白 (GRSP) 以其吸附和隔离重金属的能力而闻名.
快速城市化对GRSP在土壤重金属封存中的作用的影响尚不清楚.

研究的目的:

调查GRSP对城市绿色空间重金属封存的贡献,在不同的城市化强度下.
分析GRSP对不同重金属的吸附潜力以及城市化如何影响这些过程.

主要方法:

收集了来自中国南的184个土壤样本,按城市化强度和不透气的表面积分类.
量化GRSP,土壤重金属 (V, Ni, Cr, Cu, Pb, Co, As, Cd, Zn) 和GRSP结合的重金属.
分析GRSP吸附潜力及其与城市化水平的相关性.

主要成果:

城市化强度的增加与土壤中Pb,Cd和Cr含量 (28-66%) 和GRSP含量 (19-24%) 的降低相关.
在城市化程度较低的地区,GRSP对Cd,Pb和Cr封存的贡献是城市化程度较高的地区的1.98-3.35倍.
GRSP表现出Cu (14.71-23.77%) 的最高吸附潜力.

结论:

GRSP提高了城市土壤的重金属吸附能力.
城市化对GRSP内容及其重金属封存潜力产生负面影响.
研究结果表明,GRSP在减轻城市环境中的重金属污染方面发挥着至关重要的作用,但随着城市化增加,其有效性会下降.

关键词:

在 GRSP 中,GRSP 必须是 GRSP.重金属吸附重金属吸附重金属吸附重金属吸附重金属吸附重金属吸附重金属土壤污染土壤污染城市绿地是城市的绿色空间.城市化强度的城市化.

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