海岸带整治修复驱动下的城市滨海空间景观格局变化及其特征研究——以上海鹦鹉洲生态湿地为例

Study on changes and characteristics of urban coastal landscape pattern driven by coastal zone rehabilitation—A case study of Yingwuzhou Wetland

运用景观格局指数定量研究方法,从斑块类型级别和景观尺度级别,对以鹦鹉洲为代表的整治修复下的城市滨海空间景观格局进行了研究.结果表明,2014—2015年,鹦鹉洲受人工圈围影响,滨海空间由自然转向人工,景观格局指数也随之趋于简单,生态系统逐渐退化;2015—2018年,随着海岸带整治修复工程展开,地块斑块类型指数上升,景观尺度上的SHDI和SHEI值也上升为1.58和0.81,景观多样性和均匀性不断加强,湿地向复合型城市滨海空间转变;同时,对鹦鹉洲修复后的每个分区景观格局指数和分区景观风貌之间的联系进行了研究,发现优势斑块指数的变化对分区形象与功能影响较大.

Using the quantitative research method of landscape pattern index,from the patch type level and landscape scale level,the urban coastal space landscape pattern under the renovation and restoration represented by Yingwuzhou Wetland was analyzed.The results show that from 2014 to 2015,the coastal space of Yingwuzhou Wetland was affected by artificial enclosures,and the coastal space changed from natural to artificial,the landscape pattern indeXalso became simple,and the ecosystem gradually degraded;from 2015 to 2018,as the coastal zone renovation and restoration project started,the patch type indeXincreased,and the SHDI and SHEI values at the landscape scale also rose to 1.58 and 0.81.The diversity and uniformity of the landscape continued to increase,and the wetland was transformed into a composite urban coastal space.The study of the relationship between the landscape pattern indeXof each subregion and the landscape style of the subregion shows that the change of the dominant patch indeXhas a greater impact on the image and function of the subregion.