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首页> 外文期刊>Ocean & coastal management >A multidisciplinary coastal vulnerability assessment for local government focused on ecosystems, Santa Barbara area, California
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A multidisciplinary coastal vulnerability assessment for local government focused on ecosystems, Santa Barbara area, California

机译：针对加利福尼亚州圣巴巴拉地区生态系统的地方政府的多学科沿海脆弱性评估

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Incorporating coastal ecosystems in climate adaptation planning is needed to maintain the well-being of both natural and human systems. Our vulnerability study uses a multidisciplinary approach to evaluate climate change vulnerability of an urbanized coastal community that could serve as a model approach for communities worldwide, particularly in similar Mediterranean climates. We synthesize projected changes in climate, coastal erosion and flooding, watershed runoff and impacts to two important coastal ecosystems, sandy beaches and coastal salt marshes. Using downscaled climate models along with other regional models, we find that temperature, extreme heat events, and sea level are expected to increase in the future, along with more intense rainfall events, despite a negligible change in annual rainfall. Consequently, more droughts are expected but the magnitude of larger flood events will increase. Associated with the continuing rise of mean sea level, extreme coastal water levels will occur with increasingly greater magnitudes and frequency. Severe flooding will occur for both natural (wetlands, beaches) and built environments (airport, harbor, freeway, and residential areas). Adaptation actions can reduce the impact of rising sea level, which will cause losses of sandy beach zones and salt marsh habitats that support the highest biodiversity in these ecosystems, including regionally rare and endangered species, with substantial impacts occurring by 2050. Providing for inland transgression of coastal habitats, effective sediment management, reduced beach grooming and removal of shoreline armoring are adaptations that would help maintain coastal ecosystems and the beneficial services they provide.
机译：需要将沿海生态系统纳入气候适应规划，以维持自然系统和人类系统的福祉。我们的脆弱性研究使用多学科方法来评估城市化沿海社区的气候变化脆弱性，可以作为全世界社区的模型方法，尤其是在类似的地中海气候中。我们综合了气候，沿海侵蚀和洪水，分水岭径流以及对两个重要的沿海生态系统（沙滩和沿海盐沼）的影响的预测变化。使用降尺度的气候模型以及其他区域模型，我们发现，尽管年降雨量的变化可忽略不计，但预计未来温度，极端高温事件和海平面将增加，同时降雨事件将更加激烈。因此，预计会有更多的干旱，但更大的洪水事件将增加。随着平均海平面的持续上升，极端沿海水位将以越来越大的幅度和频率发生。自然（湿地，海滩）和建筑环境（机场，港口，高速公路和居民区）都将发生严重洪灾。适应行动可以减少海平面上升的影响，这将造成支持这些生态系统中生物多样性最高的沙滩区和盐沼栖息地的丧失，这些生态系统包括区域稀有和濒危物种，到2050年将发生重大影响。对于沿海生境而言，有效的沉积物管理，减少的海滩清理工作和消除海岸线的装甲是适应性措施，将有助于维护沿海生态系统及其提供的有益服务。

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