Department of Environmental Science & Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
Division of Environmental Science and Ecological Engineering, Korea University, 02841 Seoul, Republic of Korea.
Sci Total Environ. 2021 Mar 10;759:143454. doi: 10.1016/j.scitotenv.2020.143454. Epub 2020 Nov 9.
The purpose of the present study was to examine key coastal landscape patterns related to flood vulnerability to support resilience strategies for coastal green infrastructure. To this end, we assessed the flood vulnerability of coastal landscapes based on three indicators: exposure, including precipitation; sensitivity, including elevation, slope, soil, drainage, and density; and adaptability, including urban land-use. Subsequently, we investigated whether landscape patterns, including the shape index and subdivision index, would affect flood vulnerability through a multivariate regression analysis, which allowed us to determine key coastal landscape patterns. At the regional scale, including the overall study site, we suggested strategies for green infrastructure planning, focusing on patch shapes of forest, grassland, and water. At each local scale, a variety of landscape patterns were selected: the contiguity index of used area for the central subregion: the division index of forests, the contiguity of water, and the fractal dimension index of used area for the northeast subregion; the circumscribing circle index of barren and wetlands for the northwest subregion; the division and fractal index of forests for the southwest subregion; and the division index of forests and the fractal index of water for the southeast subregion. Based on the derived landscape patterns of each subregion, we propose coastal green infrastructure planning with resilience strategies.
本研究旨在探讨与洪水脆弱性相关的关键沿海景观格局，以支持沿海绿色基础设施的弹性策略。为此，我们基于三个指标评估了沿海景观的洪水脆弱性：暴露程度，包括降水；敏感度，包括海拔、坡度、土壤、排水和密度；以及适应性，包括城市土地利用。随后，我们通过多元回归分析研究了景观格局，包括形状指数和细分指数，是否会通过影响洪水脆弱性。这使我们能够确定关键的沿海景观格局。在区域尺度上，包括整个研究区域，我们提出了绿色基础设施规划的策略，重点关注森林、草地和水域的斑块形状。在每个局部尺度上，选择了各种景观格局：中心分区的建设用地连接指数；森林、水的细分指数和建设用地分形维数指数；西北分区的荒地和湿地的外接圆指数；西南分区的森林细分和分形指数；以及东南分区的森林细分和水的分形指数。基于每个分区的衍生景观格局，我们提出了具有弹性策略的沿海绿色基础设施规划。
