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什么是洪灾?秘鲁亚马孙地区对极端洪水的地方视角。

What is a bad flood? Local perspectives of extreme floods in the Peruvian Amazon.

机构信息

Department of Geography, McGill University, 805 Sherbrooke Street West, Montreal, H3A 0B9, Canada.

Department of Geography and Planning & School of the Environment, University of Toronto, 100 St. George Street, Toronto, M5S 3G3, Canada.

出版信息

Ambio. 2020 Aug;49(8):1423-1436. doi: 10.1007/s13280-019-01278-8. Epub 2019 Nov 5.

Abstract

The annual flood cycle is integral to rural life and livelihoods in riparian Amazonia. Livelihoods are built around the flood cycle, which facilitates transportation and affects soil fertility and fish migrations. Flood extremes, however, can have devastating impacts for riverine populations, yet there is minimal understanding of what distinguishes a 'normal' flood from a 'bad' flood, or flooding as integral to riverine settlement from flooding as environmental hazard. We address this limitation by drawing upon hydrograph data and field data collected in a riverine village in the Peruvian Amazon. We define four extreme flood types based on height, duration, and timing of onset, and illustrate how they each create a unique combination of negative and positive implications. We discuss the integral role of fishing to floodplain livelihoods during the flood season, and the implications of flood extremes for health, safety, and food provision. The article proposes a more nuanced conceptualization of flooding in riverine Amazonia to better inform policies and practices aimed at supporting local populations during extreme floods.

摘要

在亚马孙河河岸地区,每年的洪水循环是农村生活和生计的重要组成部分。人们的生计围绕着洪水循环建立,洪水循环为交通提供便利,并影响土壤肥力和鱼类洄游。然而,洪水极值对河流人口可能产生毁灭性影响,但对于何为“正常”洪水与“恶劣”洪水、何为河流定居点不可或缺的洪水与洪水环境危害,人们知之甚少。我们通过利用在秘鲁亚马孙河的一个河边村庄收集的水位图数据和实地数据来解决这一局限性。我们根据水位高度、持续时间和开始时间定义了四种极端洪水类型,并说明了它们各自如何产生独特的负面影响和积极影响组合。我们讨论了在洪水季节渔业对洪泛区生计的不可或缺作用,以及洪水极值对健康、安全和粮食供应的影响。本文提出了一种更细致入微的亚马孙河河岸洪水概念化方式,以更好地为旨在支持极端洪水中当地居民的政策和实践提供信息。

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