在巴西东南部的多斯河流域环境脆弱性评估
Jasmine Alves Campos1, Demetrius David da Silva2, Elpídio Inácio Fernandes Filho3
1Department of Agricultural Engineer, Federal University of Viçosa, Vicosa, 36570-900, Brazil. jasmine.campos@ufv.br.
Environmental monitoring and assessment
|August 30, 2023
概括
巴西多斯河流域的环境脆弱性使用GIS-MCDA.被评估. 在35.9%的盆地发现了高度脆弱性,特别是在中部地区,影响了水质.
科学领域:
- 环境科学 环境科学
- 地理空间分析是什么
- 水资源管理 水资源管理
背景情况:
- 环境脆弱性评估对于了解自然和人类对生态系统的影响至关重要.
- 杜塞河流域面临着重大环境挑战,需要详细地图脆弱性.
研究的目的:
- 通过使用GIS-MCDA评估多斯河流域的环境脆弱性.
- 确定高风险地区和影响因素,以制定有针对性的环境规划.
主要方法:
- 综合地理信息系统 (GIS) 具有多标准决策分析 (MCDA).
- 纳入自然因素 (坡度,降雨量,地质) 和人为因素 (土地使用,基础设施的接近).
- 使用热点分析和水质指数 (WQI) 进行验证,并使用全球灵敏度分析 (GSA) 进行参数影响.
主要成果:
- 35.9%的多斯河流域表现出高至非常高的环境脆弱性.
- 中间的多斯河地区,特别是Guandu,Manhuaçu和Caratinga UGRH,显示出最严重的脆弱性.
- 水质差 (低WQI) 的地区与环境脆弱性高 (高EVI) 相吻合.
- 土地使用和坡度被确定为脆弱性模型中最有影响的因素.
结论:
- 该研究成功地绘制了多斯河流域的环境脆弱性,突出了关键区域.
- 调查结果为有效的环境管理和该地区的政策制定提供了必要的数据.
- 综合GIS-MCDA方法在复杂的环境脆弱性评估中被证明是有效的.
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