Abstract:Ecological connectivity is an important indicator for ecological relations among patches. Based upon the least-cost model, this paper conducted a systematic assessment of Shenzhen′s landscape connectivity using the Barrier Effect Index (BEI) and Ecological Connectivity Index (ECI). This new approach has assisted us revealing new driving mechanism of landscape dynamics. The results indicate that the two types of landscape——natural vegetation and built-up areas are the very factors that affects the spatial configuration. Forests and agriculture have low influence, and are isles around lower hills and some reservoirs. Over half of the vegetation and farmlands are heavily disturbed by human beings, especially area around the built-ups. Based on the ECI results, no connectivity area (ECI=1) accounts for more than 42% (with built-up areas dominate 97%) whereas forest has relatively high connectivity, accounting merely 25% featured by an isle-like distribution. The relentless growth of built-up areas has been identified as the leading cause for landscape deterioration. We suggest three effective ways to increase Shenzhen′s ECI and improve the ecological structure: to undertake a dramatic change in Shenzhen′s development policy; to meliorate the no-connection areas using the remaining resources and necessary protection/restoration; to strengthen greenbelt construction in built-ups.