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在西藏高原的土壤污染和承载能力,使用结构方程模型

Lei Chai¹, Yunqiao Zhou², Huike Dong²

¹State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China.

Environmental pollution (Barking, Essex : 1987)

|September 28, 2023

概括

西藏高原土壤污染分布不均,受到土壤有机碳和温度等因素的影响. 土壤环境承载能力在东方较高,向西下降,pH值和植被覆盖是关键因素.

科学领域:

环境科学环境科学
土壤科学土壤科学
生态生态学生态生态学

背景情况:

土壤污染是一个重要的全球环境问题.
与其他地区相比,西藏高原的土壤污染和承载能力缺乏系统的多维研究.
了解这些方面对于区域环境管理至关重要.

研究的目的:

系统地调查土壤污染水平和影响西藏高原的因素.
评估土壤环境对多种污染物的承载能力 (SECC).
为该地区的土壤污染和SECC制定定量框架.

主要方法:

对持久性有机污染物 (POP),重金属 (HM) 和微塑料 (MP) 的分析.
评估气候 (MAP,MAT),社会经济 (人口,GDP),植被 (NDVI),土壤 (pH,SOC) 和地形因素.
应用结构方程建模 (SEM) 来识别关键影响因素.

主要成果:

东部TP的POPs较高,受到SOC和MAT的影响. 北部和东部TP的HM污染中度至重度,受pH和MAP的影响. MP分布与GDP和MAP相关.
在东部TP中,SECC较高,向西下降.
pH和NDVI是SECC的主要驱动因素,pH降低了容量,NDVI增加了容量.

结论:

该研究为评估西藏高原土壤污染和承载能力提供了一个系统的,具有成本效益的和定量框架.
确定了影响污染物分布的关键因素,SECC为有针对性的环境管理策略提供了见解.
这些发现突显了西藏高原土壤的独特环境挑战和特征.

关键词:

风险评估风险评估风险评估土壤污染土壤污染土壤环境承载能力 (SECC)结构方程模型 (SEM) 是一种结构方程模型.西藏高原 (TP) 是一个高原.

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