Effects of urban agglomeration and expansion on landscape connectivity in the river valley region, Qinghai-Tibet Plateau

• DOI: 10.1016/j.gecco.2022.e02004
• Publication Date: 2022-01-13T05:08:34Z
• Authors: Qingbo Wang; Shiliang Liu; Yixuan Liu; Fangfang Wang; Hua Liu; Lu Yu
• Keywords: Natural landscape; Spatial heterogeneity; Habitat Fragmentation

Urbanization provides benefit to modern civilization, while it also creates a series of ecological issues at different scales. The study landscape pattern and connectivity change caused by urban agglomeration is the hotspot regional security research. In this study, morphological spatial analysis (MSPA) Patch Importance Index (dPC) were used evaluate heterogeneity in Huangshui River Valley, Qinghai-Tibet Plateau. Then relationship was revealed bivariate autocorrelation three-dimensional curved surface graph. results showed that past 30 years, urbanization has increased more than 25%, with decrease farmland fluctuation natural habitat. Heterogeneity fragmentation obvious central region great agglomeration. MSPA significant differences interaction between habitat urbanization. severely damaged spatially correlated index. Three-dimensional graph experienced decline trend expansion construction land, which indicating complex correlation land use types. order maintain integrity ecosystem, necessary take effective measures improve sustainability cities appropriately limit This explored from perspectives whole landscape, habitat, their correlation, provided theoretical basis for further optimization coordinated management.