长江流域资源与环境 >> 2024, Vol. 33 >> Issue (5): 1076-1088.doi: 10.11870/cjlyzyyhj202405015

• 生态环境 • 上一篇    下一篇

三峡库区山地小流域种植业面源污染发生风险评估体系研究 ——以黄金河流域为例

曾俊尧1,宋福忠1*,吴鑫1,唐显枝2   

  1. (1. 重庆大学环境与生态学院,重庆 400044; 2.重庆工程职业技术学院,重庆 402260)
  • 出版日期:2024-05-20 发布日期:2024-05-29

Risk Assessment System for Non-point source Pollution in Small Mountain Watersheds  of the Three Gorges Reservoir Area:A Case Study of Huangjin River Basin

ZENG Jun-yao1 ,SONG Fu-zhong1 ,WU Xin1 ,TANG Xian-zhi2   

  1. (1. Chongqing University,Chongqing 400044,China;2. Chongqing Vocational Institute of Engineering,Chongqing 402260,China)
  • Online:2024-05-20 Published:2024-05-29

摘要: 三峡库区山地小流域种植业生产呈区块化分布,种植区块可以作为种植业面源污染控制基本单元。山地小流域种植业面源污染发生风险评估包括区块划分、风险识别、风险评估、风险防控4个子过程,通过构建以风险因素筛选与量化为核心的风险评价模型,建立源因子和迁移因子2个维度的支撑评价指标体系,开展分地块面源污染发生风险评估并进行等级划分,依据单指标影响程度,从源头控制、过程控制和末端控制3个方面提出种植业面源污染针对性管控措施,指导生产和管理过程。

Abstract: The plantation production in the mountainous sub-watersheds of the Three Gorges Reservoir Area is distributed in units of blocks. The plantation blocks can be used as the basic unit to implement non-point source pollution control. The risk assessment of non-point pollution in mountainous small watersheds includes four sub-processes: block division, risk identification, risk assessment, risk prevention and control. By constructing a risk evaluation model focusing on the screening and quantification of risk factors, and by establishing a supportive evaluation index system in the dimensions of source factors and migration factors, the risk assessment of plantation non-point pollution was carried out and graded. The targeted control and management of plantation non-point pollution was proposed in three aspects: source control, process control and end control, based on the influence of single index. Based on the influencing degree of single index, we proposed several targeted control measures for plantation non-point pollution control in three aspects including source control, process control and end control, to guide an improved management strategy.

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