优化全球各国农药排放和地表淡水质量管理的模型选择:分层筛选法

IF 6 3区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Environmental Sciences Europe Pub Date : 2024-09-29 DOI:10.1186/s12302-024-00964-z
Yabi Huang, Zijian Li
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引用次数: 0

摘要

地表淡水中的农药主要来源于农田中的排放,有可能导致违反地表淡水水质标准。为了帮助全球监管机构通过估算和控制农药排放率来有效管理地表淡水水质,本研究提出了一种分级筛选方法,供全球各国和各地区选择合适的建模工具。考虑到各国的空间分布区域、农药排放条件和立法体系,本研究引入分层指标对全球各国进行分类。因此,不同类别的国家与合适的模型组相匹配,如用于监管情景的标准模型组、用于大陆情景的一般模型组和具有高空间分辨率的高级模型组。结果表明,全球共有 193 个国家被分为 6 个国家组,根据这些国家组的模型分配,分别有 153 个、34 个和 6 个国家适合标准模型组、一般模型组和高级模型组。此外,还选择了 12 种常用农药来演示反向计算过程,即通过标准模型组和一般模型组的农药地表淡水质量标准(输出)来估算农药排放率(输入)。由于高级模式组的计算量较大,因此未在此过程中使用。在标准模式组中选择了 PWC 和 TOXSWA,在一般模式组中选择了 SWAT,开发了一种近似方法来简化农药排放率系数的计算,作为示范。这种方法可用于控制符合标准模型组和一般模型组的各国地表淡水质量标准中的农药排放率。研究结果表明,通过分层筛选法选出的农药归宿模型可以帮助全球各国建立农药排放率与地表淡水质量标准之间的定量关系,从而帮助全球机构从法律角度管理农药排放和淡水质量。在未来的研究中,有必要更新和简化合适的先进模型进行计算示范,以帮助农药管理。需要进一步开展研究,以深入调查不同条件下的农药排放和淡水残留浓度。
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Optimizing model selection across global countries for managing pesticide emission and surface freshwater quality: a hierarchical screening approach

Pesticides in surface freshwater primarily originate from their emissions in agricultural lands, potentially leading to violations of surface freshwater quality standards. To aid global regulatory agencies in effectively managing surface freshwater quality by estimating and controlling pesticide emission rates, this study proposes a hierarchical screening approach for countries and regions worldwide to select appropriate modeling tools. Hierarchical indicators are introduced to classify countries globally, considering their spatial distribution areas, pesticide emission conditions, and legislative systems. Consequently, different categories of countries are matched with suitable model groups, such as the standard model group for regulatory scenarios, the general model group for continental scenarios, and the advanced model group with high spatial resolution. Results indicated that a total of 193 countries worldwide were categorized into six country groups, of which 153, 34, and 6 countries were found to fit the standard, general, and advanced model groups, respectively, based on the model assignments for these country groups. Furthermore, 12 commonly used pesticides were selected to demonstrate the back-calculation process, which estimates the pesticide emission rate (input) by pesticide surface freshwater quality standards (output) by standard and general model groups. The Advanced model group was not applied in this process due to its intensive computation. An approximate approach was developed to simplify the calculation of the emission rate factor of pesticides using the PWC and TOXSWA selected in the standard model group as well as SWAT in the general model group, serving as a demonstration. This approach can be applied to control pesticide emission rates from surface freshwater quality standards across countries that fit in the standard and general model groups. The results highlight that pesticide fate models selected through the hierarchical screening approach, can assist global countries in establishing a quantitative relationship between pesticide emission rates and surface freshwater quality standards, which can help global agencies manage pesticide emissions and freshwater quality from a legal perspective. There is a need to update and simplify suitable advanced model for calculation demonstration in future studies to aid in pesticide management. Further research is needed to thoroughly investigate pesticide emissions and freshwater residue concentrations under varying conditions.

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来源期刊
Environmental Sciences Europe
Environmental Sciences Europe Environmental Science-Pollution
CiteScore
11.20
自引率
1.70%
发文量
110
审稿时长
13 weeks
期刊介绍: ESEU is an international journal, focusing primarily on Europe, with a broad scope covering all aspects of environmental sciences, including the main topic regulation. ESEU will discuss the entanglement between environmental sciences and regulation because, in recent years, there have been misunderstandings and even disagreement between stakeholders in these two areas. ESEU will help to improve the comprehension of issues between environmental sciences and regulation. ESEU will be an outlet from the German-speaking (DACH) countries to Europe and an inlet from Europe to the DACH countries regarding environmental sciences and regulation. Moreover, ESEU will facilitate the exchange of ideas and interaction between Europe and the DACH countries regarding environmental regulatory issues. Although Europe is at the center of ESEU, the journal will not exclude the rest of the world, because regulatory issues pertaining to environmental sciences can be fully seen only from a global perspective.
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