[Objective] The ecological corridor in Etuoke Banner

Inner Mongolia was constructed to improve the quality and stability of the ecosystem

and provide the path of biological migration

promote species exchange between different habitats

so as to provide a scientific basis for the implementation of ecological corridor construction project and the protection of biodiversity in Etuoke Banner.[Methods] Taking Etuoke Banner as the research area

the ecological source was determined by using the comprehensive results of ecological sensitivity evaluation and ecosystem service value analysis

and the minimum cumulative resistance model (MCR) and minimum cost path were used to construct the ecological corridor.[Results] ① The extreme and high sensitive ecological area of Etuoke Banner

mainly distributed in the border area of Mengxi Town and Qipanjing Town in the northwest

accounted for 41.31% of whole banner. ② The overall status of ecosystem service value was in poor condition

most of the areas were in the middle and low value areas

accounted for 95.37% of whole banner. ③ The ecological corridor system was constructed

and the ecological corridor and ecological source area roughly formed a ring in the closed area

among them the total length of important corridors was 721 km

and that of general corridors was 803 km.[Conclusion] On the whole

the ecological source areas of Etuoke Banner are mainly scattered on both sides of the east and west. Bulong Gacha and Chahannoer Gacha play a bridge role in the exchange of material and energy between the east and the west. In order to ensure the overall connectivity of the study area

it is particularly important to strengthen the protection of these sources.