Shangri-La county ecological land use planning based on landscape security pattern

Landscape security pattern refers to the spatial pattern of potential in landscape,which can play a potential decisive impact and constitute a pattern of controlling the security landscape.Between the different security situations through the establishment of model,you can minimize the cost to achieve win-win results.Ecological land is defined as the ecosystem(land unit) and its spatial position that have important significance in safeguarding critical ecological processes and providing critical ecosystem services.To achieve the biodiversity conservation objectives,we constructed different levels landscape security pattern,and it can provided corresponding countermeasures for ecological land use planning in the research area.The research area of this paper is Shangri-La County that located in the northwest of Yunnan Province,longitude 99 ° 20′—100 ° 19′,latitude 26 ° 52 ′—28 ° 52′,and located in Yunnan,Sichuan and Tibet intersection of the triangular area,total area is 11,613 square kilometers.Due to many natural and historic and other reasons,social and economic development was slow.With the Shangri-La economic development,the emerging eco-tourism area,national park tourism development,and construction of large water conservancy projects,all of this become the driving forces for the change of the spatial pattern of urban landscape,such as a great quantity of the natural habitats disappear,landscape fragmentation increase,landscape accessibility reduce in the region.Obviously,Shangri-La′s ecological security has become the bottleneck of sustainable development of the county already.Select five nature reserves and scenic spots as the "source" from the research area,at the same time,to achieve the biodiversity conservation objectives,choose and analysis the type of surface landscape,slope and the corresponding coefficient of these two factors.With spatial analysis tools of ArcGIS calculated and established two single-factor cumulative resistance surfaces.On this basis,it was constructed using the weighted superposition of two factors the minimum cumulative resistance surface.Then building the corridor among the "source" and the key strategic points,finally,the construction of landscape security patterns has been formed completely.Based on landscape security pattern analysis,in the ecological land planning,it will propose high,medium and low three different levels of safety,then the reference will provide for the ecological security strategy in the study area.In the study area,the ecological land use at low,medium and high security levels occupied 12.82%,44.1% and 80.3% of the total,respectively.The ecological land use at low security level that is reserved minimum land base line for hold natural ecosystem service function.Research shows,the analysis which is based on Shangri-La County′s landscape security pattern will be the key ecological process when it′s applied on ecological land planning.The methods possess reference value for to formulate urban planning and land planning.Furthermore,how to construct landscape security pattern is the mainly factor,especially in the traditional national culture protection,the research of cultural landscape security pattern is much more necessary.Simultaneously,farther study will also valuable that the comprehensive landscape security pattern′s form has taken multiple natural and humanistic single factor into the ecological security pattern.