Study On The Importance Identification And Spatial Pattern Optimization Of Ecological Land In Pingshan County

Ecological land is the space to maintain regional ecological stability and provide ecosystem services,which plays an important role in regional water conservation,biodiversity conservation and other ecological functions.With the development of society,the process of urbanization is accelerating,a large number of resources are exploited and utilized,the ecological land is also occupied by various ways,meanwhile,the protection of ecological land is under the pressure from the construction land expansion and the cultivated land protection policy which makes the ecological land area decreased day by day,the deterioration of spatial pattern and ecological environment,reveals frequent natural disasters and other phenomena.Based on this problem,this article focuses on Pingshan County,analyzes the present situation of this ecological land deeply and roundly.First,discussing the landscape characteristics of the county territory ecological land in detail;second,expounding the importance of ecological land by multiple dimensions;third,on the basis of this,considering three aspects influence of ecological land protection,economic development of construction land and agricultural production comprehensively.In the end,making clear the protective policy recommendations of ecological land.Come to the following conclusion:(1)According to the present land use data in 2015,this article selects woodland,grassland,water area,garden land,barren land and bare land as ecological land.Through the analysis of landscape index,the forest land and grassland in the study area are relatively concentrated,while the distribution of water and garden land is scattered.Woodland and grassland play a key role in the connectivity of ecological landscape.Therefore,we should adjust the protection of woodland and grassland,reduce the fragmentation of the landscape,and continuously enhance the richness of the landscape.(2)Starting from four aspects of water conservation,biodiversity protection,landscape recreation and disaster protection,the spatial importance of ecological land in the target county is analyzed in all directions and at a deep level.After study,it is understood that core ecological land is 53674.25hm~2,which accounts for 26.45%of the ecological land,that is mainly distributed in the northwest region,southwest area and important water area;the important ecological land area is 48672.84hm~2,accounting for23.92%of the ecological land,which is mainly distributed in the middle of western mountainous area;the transitional ecological land area is 47983.31hm~2,accounting for23.75%of the ecological land,which is mainly distributed in the core type,important type and the middle buffer zone between construction land and cultivated land;the area of general ecological land is 52500.12hm~2,the proportion of ecological land area is 25.86%.It is mainly distributed in the periphery of construction land and cultivated land.(3)Taking the core ecological land as the source,considering the three aspects that ecological land protection,the economic suitability construction land expansion,the cultivated land protection to constructs the resistance surface,with the help of minimum cumulative resistance model performing spatial division of ecological land.Result display:the ecological core area is 95479.02 hm~2,which accounts for 36.54%of the total research area.The area of the ecological buffer area is 42226.08hm~2,which accounts for16.16%of the total research area.The eco-transition area is 32740.89hm~2,covering 12.53%of the total research area.The ecological occupied area is 90854.01hm~2 covering 34.77%of the total research area.landscape components identification,including strategic points and ecological corridors,to construct landscape ecological pattern.(4)The consequence of optimization of ecological security pattern:regarding the core ecological land and some important land in the research area including humpback scenic spot,water ecotourism scenic spot,Tiangui mountain scenic spot and so on as the most important ecological patch,then on the basis of the river and road ecological corridor at present,making the corridors perfect.The corridor is constructed into a sector grid with28 strategic points,9 ecological corridors and 4 horizontal and 5 vertical distribution.Based on the connotation of ecological land,the spatial division of ecological land,the security pattern of ecological land and the concept of ecological land protection,the paper gives the corresponding improvement and optimization measures.