Construction of a Comprehensive Ecological Security Pattern Based on the Minimum Cumulative Resistance Model and Hydrological Analysis——A Case Study of Tai an Prefecture
Taian prefcture is an important nodal city in the lower reaches of the Yellow River Basin,characterized by diverse landforms and rich biodiversity.The construction of an ecolog-ical security pattern in Taian prefecture plays a crucial role in the implementation of territo-rial ecological protection and the overall enhancement of the ecosystem.Taking Taian prefec-ture as the research area,this study identifies the ecological sources based on the assessment of ecological importance and ecological vulnerability.By employing the Minimum Cumulative Resistance(MCR)model and hydrological analysis,two sets of ecological corridor systems—one for primary ecological corridors and the other for river corridors—are constructed,resulting in the formation of an integrated ecological security pattern for Taian prefecture.The results show that Taian prefecture has 994.66 square kilometers of ecological source areas,accounting for 12.81％of the total area,mainly distributed in regions with higher ecological quality,such as the Taishan Mountains,Culai Mountain,Daheng Mountains,and Lianhua Mountain.The ecologi-cal corridors,totaling 23 and extending 353.71 kilometers in length,interconnect the ecologi-cal source areas,presenting a dense spatial distribution in the east and sparser in the west.The ecological source areas and corridors together form an ecological security pattern for Taian prefecture characterized as"one belt,one screen,and multiple corridors."The study results have significant implications for ensuring the ecological security of Taian prefecture and can provide guidance for ecological management and control in the city.
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