Construction of Ecological Corridor in Tianfu New District Based on MCR Model

Ecological corridor can improve the landscape connectivity between source areas, which is of great significance to enhance the quality and stability of ecosystem. Taking Tianfu New District in Chengdu as the research area, according to the morphological spatial pattern analysis and landscape connectivity analysis, patches with important ecological functions were selected as the ecological source, the potential ecological corridors were constructed by using the minimum cumulative resistance model, and the gravity model was introduced to evaluate the importance of the ecological corridor. The results showed that: 1） MSPA analysis revealed that the core landscape types accounted for the largest proportion of all landscape types, up to 58.74%; 2） A total of 14 ecological source patches had been identified, which were mainly distributed in the Longquan Mountain areas in the east and the water conservation areas in the middle. The patches in the source areas that need important protection were No.10 and No. 12-14; 3） A total of 91 ecological corridors with a total length of 776.19 km and an area of 116.22 km² were constructed, and the minimum cost consumed by species migration among multiple patches was quantitatively analyzed. 4） The gravity model was used to analyze the importance of the ecological corridor between the source areas, and the results showed that the interaction value between No.6 and No.7 source areas were the highest, and the ecological corridor between the two areas should be mainly protected, with woodland accounting for the highest proportion among the ecological corridors, indicating that the overall stability of the ecological corridor was good.