Wu Jian-Sheng, Liu Hong-Meng, Huang Xiu-Lan, Feng Zhe
Key Laboratory for Environmental and Urban Sciences, Shenzhen Graduate School, Peking University, Shenzhen 518055, Guangdong, China.
Ying Yong Sheng Tai Xue Bao. 2012 Sep;23(9):2543-9.
Ecological land is the most crucial and sensitive land use type in rapidly urbanizing areas. Landscape connectivity can help us to better understand the interactions between landscape structure and landscape function. By using the land use data of Shenzhen from 1996 to 2008 and the graph theory- based integral index of connectivity (IIC), probability index of connectivity (PC), and importance value of patches (dPC), a dynamic evaluation on the landscape connectivity of ecological land in the City was conducted, and a spatial assessment was made to identify the most important patches for maintaining overall landscape connectivity. In combining with the basic ecological controlling line in Shenzhen, the variations of the landscape connectivity of the ecological land inside and outside the basic ecological controlling line were evaluated. From 1996 to 2008, the overall landscape connectivity of the ecological land in Shenzhen displayed a downward trend, the importance and the spatial distribution of the important patches for maintaining the overall landscape connectivity changed, and the basic ecological controlling line played definite roles in maintaining the landscape connectivity of ecological land inside the line.
生态用地是快速城市化地区最关键和敏感的土地利用类型。景观连通性有助于我们更好地理解景观结构与景观功能之间的相互作用。利用1996年至2008年深圳市的土地利用数据以及基于图论的连通性积分指数（IIC）、连通性概率指数（PC）和斑块重要值（dPC），对该市生态用地的景观连通性进行了动态评价，并进行了空间评估以确定维持整体景观连通性最重要的斑块。结合深圳市基本生态控制线，对基本生态控制线内外生态用地的景观连通性变化进行了评价。1996年至2008年，深圳市生态用地的整体景观连通性呈下降趋势，维持整体景观连通性的重要斑块的重要性和空间分布发生了变化，基本生态控制线对维持线内生态用地的景观连通性起到了一定作用。
