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Species geographic distribution and conservation priority areas are important bases for in situ biodiversity conservation and conservation decision‐making. In view of the urgency of endangered species protection, eight representative endangered species in the typical forest ecosystem of the Greater and Lesser Khingan Mountains were studied. Based on 1127 occurrence points and environmental data collected from 2016 to 2021, used BIOMOD2 and Zonation to reconstruct the potential distribution area and identify conservation priority areas of eight species (Tetrao parvirostris, T. tetrix, Gulo gulo, Alces alces, Martes zibellina, Moschus moschiferus, Lynx lynx, Lutra lutra). The results showed potential distribution areas for almost all species concentrated in the northern part of the Greater Khingan Mountains (GKM) and the central part of the Lesser Khingan Mountains (LKM). The potential distribution areas of each species were as follows: black‐billed capercaillie, 102,623 km2; black grouse, 162,678 km2; wolverine, 63,410 km2; moose, 140,287 km2; sable, 112,254 km2; Siberian musk deer, 104,787 km2; lynx, 139,912 km2; and Eurasian otter, 49,386 km2. Conservation priority areas (CPAs) clustered in the north GKM and central LKM and totaled 220,801 km2, and only 16.94% of the CPAs were currently protected by nature reserves. We suggest that the Chinese government accelerate the integration of existing protected areas in the northern GKM and establish a larger GKM National Park based on cost‐effective multi‐species protection. [ABSTRACT FROM AUTHOR]

Information on feeding habits and food choices of species living in heavily disturbed and fragmented habitats is critical to developing conservation plans for these animals. We collected data on the diet and food choices of two groups (Groups 1 and 2) of white-headed langurs ( Trachypithecus leucocephalus) from August 2011 to July 2012 in a highly fragmented limestone habitat within Chongzuo White-headed Langur National Nature Reserve, Guangxi province, China. The langurs fed on 97 plant species. Leaves constituted 72.2% and 80.7% of the overall diet for Group 1 and Group 2 (including 55.7% and 66.4% young leaves), and fruits accounted for 22.8% and 11.4%, respectively. The consumption of young leaves and fruits corresponded to their availabilities for the langur groups. Mature leaf consumption peaked in December and January, corresponding to a period of young leaf scarcity. Though the langurs fed on a wide variety of plant species, only ten species made up over half of their diet, and only two of these belonged to the ten most common species in the foraging region. Likewise, there was no significant relationship between the abundance of a species and its percentage of feeding records. Our results indicate that white-headed langurs respond to limestone habitat fragmentation by broadening their diet and relying more heavily on leaves, which may be enabled by their digestive physiology. We also emphasize the importance of conserving uncommon plant species for the survival of the langurs. [ABSTRACT FROM AUTHOR]