Research on spatial optimization of protected areas based on threatened species protection in the middle Yangtze River Basin
Threatened species pose a major risk to biodiversity.Biodiversity protection is an important basis for determining conservation priorities,assessing environmental impacts,and establishing protected areas for the implementation of the policies and decisions.Although the middle Yangtze River Basin has a large number and numerous types of protected areas,there are still protection gaps of species.This paper has selected 98 threatened species based on the IUCN Red List of Threatened Species.It uses the MaxEnt model to analyze the distribution characteristics and dominant influencing factors of their suitable areas.According to the level of threat,this paper divides protection hotspots and identifies protection gaps by overlaying national protected areas,priority areas for biodiversity conservation,and ecological function protection areas.This can provide suggestions for the spatial planning and optimization of protected areas.The results show that:(1)The distribution of threatened species in the middle Yangtze River Basin is mainly influenced by the topographic gradient.Their suitable areas and protected hotspots are concentrated in mountainous areas such as the Qinling Mountains,Daba Mountains,Shennongjia Mountains,Wuling Mountains,Xuefeng Mountains,and Mufu Mountains.(2)About one-third of the protection gaps exist in the protection hotspots.They are mainly located in the north of Dalou Mountains,Mulianjiu Mountains,the middle of Xuefeng Mountains and Yushan Mountains,which form a spatial pattern of"large aggregation and small dispersion".(3)We should strengthen the protection of threatened species in areas with significant terrain fluctuations and elevations of approximately 800-1500 meters.(4)Protected areas should be increased in Enshi city,Jianshi county,Anhua county,Fengxin county,Wuning county,Yifeng county and other areas to optimize the overall connectivity of protected areas and biological protection network.
middle Yangtze River Basinthreatened speciessuitable areaprotected area
NETL
NSTL
万方数据
维普
