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首页> 外文期刊>Journal of Environmental Planning and Management >Low-impact development for impervious surface connectivity mitigation: assessment of directly connected impervious areas (DCIAs)
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Low-impact development for impervious surface connectivity mitigation: assessment of directly connected impervious areas (DCIAs)

机译：缓解不透水地表连通性的低影响开发：直接连接不透水区 （DCIA） 的评估

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摘要

Urbanization increases directly connected impervious area (DCIA), the impervious area that is hydraulically connected to downstream drainage by closed pipelines. Although the benefits of low-impact development (LID) have been examined in other studies, its effect on alleviating DCIA levels has seldom been assessed. This study measured the DCIA of urban watersheds in Houston, TX, USA. Five land-use types were categorized and the contribution of LID facilities to reducing DCIA in each type was estimated by using Sutherland's equations. The results showed (1) DCIA in commercial areas was greater than that in residential areas, especially for big-box retailers; (2) the percentage of DCIA reduction by LID varied by land-use type; and (3) optimal combinations of LID application could maximize the effectiveness of DCIA reduction. The results contribute to prioritizing land-use type for implementing LID practices and providing local governments with a useful measure to estimate runoff volume.
机译：城市化增加了直接连接的不透水区 （DCIA），即通过封闭管道与下游排水系统进行水力连接的不透水区。尽管其他研究已经检查了低影响开发 （LID） 的益处，但很少评估其对缓解 DCIA 水平的影响。本研究测量了美国德克萨斯州休斯顿城市流域的DCIA。对5种土地利用类型进行了分类，并使用Sutherland方程估计了LID设施对降低每种类型DCIA的贡献。结果显示：（1）商业区DCIA大于住宅区，尤其是大型零售商;（2）LID减少DCIA的百分比因土地利用类型而异;（3）LID应用的最佳组合可以最大限度地提高DCIA降低的有效性。研究结果有助于确定土地利用类型以实施LID实践的优先次序，并为地方政府提供估计径流量的有用措施。

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