土地利用变化对三分布和生物可用性的影响 桑江平原的
Li Zhang1, Jianjun Fan2, Qianyong Liang3
1College of Earth Sciences, Jilin University, Changchun, 130061, China; Natural Resources Survey Institute of Heilongjiang Province, Harbin, 150036, China; Key Laboratory of Black Soil and Water Resources Research of Heilongjiang Province, Harbin, 150036, China.
Environmental pollution (Barking, Essex : 1987)
|May 5, 2025
概括
在三江平原的土地利用变化影响土壤 (Se) 的生物可用性. 氧化铁和有机物相互作用是Se固定的关键,特别是在米土壤中,影响作物吸收.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 地质化学 地质化学
背景情况:
- 摩利索地区的土地利用变化改变了土壤的特性.
- (Se) 的物种化和生物利用性是关键的环境因素.
- 土壤成分之间的相互作用影响土壤的流动性.
研究的目的:
- 为了研究不同土地用途下的物种和分布.
- 了解氧化铁和有机物在转化中的作用.
- 评估土壤特性和水资源管理对Se生物可用性的影响.
主要方法:
- 在林地,干地和地土壤中分析总的Se含量.
- 土壤有机碳 (SOC) 和Se物种之间的相关性分析.
- 调查米土壤中海深分布和水效应.
- 评估生物积累因子 (BCF) 和土壤参数 (Eh,pH).
主要成果:
- 总Se含量在土地使用类型中均分布.
- SOC与田土壤中的总Se和特定Se物种正相关.
- 田土壤的水资源管理显著影响了土壤表层的缩和浸.
- 土壤Eh和pH与作物中的Se含量有显著的相关性.
结论:
- 氧化铁与有机物质的结合对于固是至关重要的,特别是在米土壤中.
- 土地使用和土壤特性极大地控制了Se的生物可用性.
- 土壤的氧化还原潜力 (Eh) 和pH是作物对Se吸收的关键因素.
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