Abstract: Incorporating a temporal dimension into habitat network construction holds significant importance for biodiversity conservation.This paper constructs habitat networks for current and future climate scenarios using MaxEnt and LCM model,proposes a method for constructing spatio-temporal habitat networks,and optimizes it through path selection strategy to enhance the protection efficiency of habitat networks under climate change.Taking Falco tinnunculus in Urad Front Banner as an example,the results indicate: Compared to the present,0.07%～43% of habitats will be lost in the future,while 190.28%～629.50% of habitats will be increased.The spatio-temporal habitat network achieves a 100% protection rate for the integrity of both current and future habitat networks,with the connectivity protection rate of networks of the same level reaching 100% and 92.53%,respectively; The path selection strategy shows a significant optimization effect,achieving 100% integrity of current and future habitat networks with only 11.45% of the basic paths,while connectivity reaches 99.88% and 97.39%,respectively.The Falco tinnunculus spatio-temporal habitat network exhibits a “one axis and two cores” pattern.Wuliangsu Lake and the plain region at the southern foot of the Wula Mountain should be regarded as the key protection area of Falco tinnunculus habitats.This paper establishes a methodological framework for analyzing the dynamics of species habitat networks under climate change,providing a scientific basis for formulating effective biodiversity conservation strategies and responding to global climate change.

Key words: spatio-temporal habitat networks, climate change, network integrity and connectivity, Falco tinnunculus, Urad Front Banner