The Selection of Distance Threshold of Wetland Landscape Connectivity in Tianjin Binhai New Area

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Du, Zhibo^1 ; Meng, Weiqing^2 ; Li, Hongyuan^1

College of Environmental Science and Engineering, Nankai University, Tianjin

300350, China^1

College of Urban and Environment Science, Tianjin Normal University, Tianjin

300387, China^2

关键词: Appropriate distances;    Coincidence probabilities;    Habitat availability;    Landscape connectivities;    Landscape pattern changes;    Number of components;    Remote sensing image interpretations;    Tianjin binhai new areas;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/6/062094/pdf
DOI  :  10.1088/1757-899X/392/6/062094

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

When applying the landscape connectivity method to study landscape pattern changes, choosing the appropriate distance threshold is the key. By using the Landsat 8-OLI remote sensing image interpretation data of wetland in Tianjin Binhai New Area in 2017, this paper aims to screen the most proper connection threshold of wetland landscape in the study area. Based on habitat availability, 11 distance thresholds (100, 200, 400, 600, 800, 1000, 1500, 2000, 3000, 5000, 8000m) were selected to compute the Number of Links (NL), Number of Components (NC), Equivalent Connectivity Area (ECA) and Landscape Coincidence Probability (LCP), and the computed values were used for analysing and screening the distance threshold. The results show that the suitable range of the distance threshold for the connectivity of wetland landscape in Tianjin Binhai New Area is 400-800m, of which 400m is the best value, and the research results can provide reference for the study of wetland landscape in this area.