Study On Habitat Fragmentation Assessment And Potential Ecological Corridor Of Trachypithecus Leucocephalus

The white-headed langur is an endangered protected animal unique to Guangxi.This study takes the habitat of white-headed langur as the research object,evaluates the habitat suitability based on the maximum entropy principle,and helps establish the potential ecological corridor of the habitat of the white headed langur based on the minimum cost principle.It is of significance to further promote the gene exchange among the population of white-headed langur,to understand the survival needs of the population of white-headed langur,to provide scientific basis for promoting the protection of monkey population,and to achieve sustainable development.The main conclusions are as follows:(1)Forest land is a dominant landscape,with the simplest patch shape and the richest species diversity.It is mainly divided by cultivated land and shrubs.Shrubs have the highest degree of fragmentation and the most complex landscape shapes.The bare land density and edge density are the highest.The largest patch is the farmland landscape,and the landscape diversity is relatively simple.Bare-land and construction land are scattered,requiring more precise land planning.When the species migration capacity is 800?1000m,the woodland landscape connectivity is the highest.The existing landscape is unreasonably distributed,and the construction of corridors is a necessary measure to increase the connectivity of habitats.(2)The low adaptive area of white-headed langur habitat accounts for 98.76% of the research area in this study,while the suitable and highly suitable area constitutes 1.24% of the research area,where wooded area represents 93.39%,and shrubs and cultivated land account for 4.34% and 1.82% respectively.In the suitable habitats,wooded area only accounts for 1.15% of the total research area.Suitable habitats are mainly distributed in the wooded area of Bapen Township and Banli Township.Not all wooded area is suitable for its survival.(3)Highly suitable areas,suitable areas and lowly suitable areas within the white-headed langur reserve respectively account for 22.64%,28.81% and 48.54% of the total area of the reserve,respectively.The suitable habitat area in the reserve is only 38.27 km2,while there are 25.16 km2 of suitable habitat remains unincluded in the protected area.The habitats can be connected by planning 25 corridors in Bapen Township and Banli Township.It is recommended that the habitat should first be restored from the protected area,and then the population range could be expanded by restoring the surrounding potential suitable habitats,so as to achieve omprehensive multi-species protection.