表面土壤的空间分布及其影响因素在中国:基于文献的分析分析
Li Cheng1, Nusrat Nazir1, Xingyuan Li1
1College of Earth and Environmental Sciences, Lanzhou University, Key Laboratory of Western China's Environmental Systems (Ministry of Education), China, Lanzhou, 730000, China; Center for Health Geology & Carbon Peak and Carbon Neutrality of Lanzhou University, Lanzhou, 730000, China.
Environmental pollution (Barking, Essex : 1987)
|August 10, 2025
概括
中国的土壤 (Se) 分布有很大差异,受区域气候和地质的影响. 了解这些模式对于环境健康和农业至关重要.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- (Se) 是一种重要的微量元素,对健康有重大影响.
- 在全球和国家范围内,Soil Se的分布不均,影响生态系统和人类健康.
- 中国广的领土和多样化的气候条件表明复杂的土壤Se模式.
研究的目的:
- 在中国进行一项关于表面土壤 (Se) 分布的全国性评估.
- 确定影响Se分布在不同气候区域的关键因素.
- 为环境健康基准和富含的农业提供科学基础.
主要方法:
- 1980-2024年间发表的448项研究的元分析,涵盖了1047个采样地点.
- 取样地点根据降水情况分为潮湿的东南地区,干旱的西北地区和半潮湿的中部地区.
- 分析区域因素,如母体材料,季风影响,地形,土壤有机物质和温度.
主要成果:
- 土壤中的Se度从0.007到25.42毫克/公斤不等.
- 39.92%的地点超过了Se丰富度值,而2.48%的地点超过了毒性查水平.
- 平均土壤Se含量从潮湿的东南地区 (0.7294毫克/公斤) 减少到干旱的西北地区 (0.2785毫克/公斤) 和半潮湿的中部地区 (0.2745毫克/公斤).
- 关键影响因素因地区而异:东部的季风和母体物质,中部的有限母体物质和地形,西北的低有机物质/温度.
结论:
- 区域气候和基因材料是中国土壤Se分布的主要驱动因素.
- 特定地区表现出种类丰富或缺乏,需要定制的管理策略.
- 这些发现支持制定区域环境卫生标准和海洋丰富农业实践.
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