Dynamic Changes of Landscape Pattern and Vulnerability Analysis in Qingyi River Basin

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Li, Ziwei^1 ; Xie, Chaoying^2 ; He, Xiaohui^3 ; Guo, Hengliang^3 ; Wang, Li^1

College of Water Conservancy and Environmental, Zhengzhou University, Zhengzhou

450001, China^1

Environmental Monitoring Information Center, Xuchang Environmental Protection Bureau, Xuchang

461000, China^2

Smart City Institute, Zhengzhou University, Zhengzhou

450052, China^3

关键词: Environmental vulnerability;    Global environmental change;    Landscape pattern changes;    Landscape restoration;    Landscape sensitivity;    Spatial and temporal changes;    Vulnerability analysis;    Vulnerability degree;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012189/pdf
DOI  :  10.1088/1755-1315/94/1/012189

来源: IOP

【 摘 要 】

Environmental vulnerability research is one of the core areas of global environmental change research. Over the past 10 years, ecologically fragile zones or transition zones had been significantly affected by environmental degradation and climate change and human activities. In this paper, we analyzed the spatial and temporal changes of landscape pattern and landscape vulnerability degree in Qingyi River Basin by calculating the landscape sensitivity index and landscape restoration degree index based on Landsat images of 2005, 2010 and 2015. The results showed that: (1) The top conversion area was farmland, woodland and grassland area decreased, city land and rural residential land increased fastest. (2) The fragility of the landscape pattern along the Qingyi River gradually increased between 2005 and 2015, the downstream area was influenced by the influence of human activities. (3) Landscape pattern changes and fragility are mainly affected by urbanization. These findings are helpful for understanding the evolution of landscape pattern as well as urban ecology, which both have significant implications for urban planning and minimize the potential environmental impacts of urbanization in Qingyi River Basin.