[Construction of Ecological Security Pattern in Hangzhou Based on MSPA and InVEST Model]

With rapid economic development and urbanization， regional ecological security faces significant challenges. Focusing on Hangzhou as the study area， this research calculates the importance of ecosystem services and overlays the core areas analyzed by the minimum cumulative resistance （MCR） model to identify potential ecological sources. The habitat quality results of the InVEST model are then introduced to filter the final ecological sources. Six resistance factors are weighted differently to construct a composite resistance surface， and the linkage mapper （LM） tool is employed to extract ecological corridors， establishing the ecological security pattern for Hangzhou. The findings revealed that： ① The final ecological source area in Hangzhou covered 3 008.64 km²， accounting for 22% of the city's total area. The distribution of these sources was reasonable， especially with strong connectivity in the southwest， facilitating species migration. ② Fifteen ecological corridors， totaling 333.4 km in length， were extracted using the LM tool. These corridors connected different ecological sources， with a set width of 50 meters to ensure the highest forestland proportion， fostering migration and effective ecological functioning. ③ Twenty-four critical areas needing restoration were identified， including eleven core protection zones， three diagnostic enhancement zones， eight key restoration zones， and two source connection areas. This study provides key area identification for ecological corridor construction in Hangzhou and offers scientific guidance for enhancing and restoring critical zones.