Study On The Landscape Structure Of The Ecological Corridor In The Main Urban Area Of Kunming

Ecological corridors have important implications for improving urban environmental issues,protecting urban biodiversity,improving urban ecosystem service function and optimizing urban landscape pattern.Kunming has a unique plateau lake and geomorphic features,and the ecological environment of the city is more special,so the study of the ecological corridor in Kunming have important implications for improving regional ecological environment and protecting Dianchi.From the perspective of landscape ecology,this paper analyzes the present situation of the ecological corridor landscape structure and the present situation of the ecological corridor network structure in the Kunming main urban area by using image interpretation and index analysis;through structuring the gradient buffer zone,the paper discusses the relationship between Dianchi and the ecological corridor;through dividing different elevation,slope and slope area,the paper analyses the influence of topography and geomorphology on the ecological corridor;through summing up the existing problems of the ecological corridor in the main city of Kunming,finally,based on the minimum resistance model and the minimum cost path model,this paper constructs an optimized ecological corridor network,and suggestions for optimizing the ecological corridor and ecological corridor network in the main urban area of Kunming is put forwar.The results show that:The number of green corridors in the Kunming main urban areas is the largest,the density is the highest;the number of blue ecological corridors is the least,the density is the lowest.The distribution of urban ecological corridor network space is similar to that of the ecological corridor;the network connectivity of the grey ecological corridor is the highest,the loop formed is the most;the network connectivity of green corridor network is the lowest,and there are very few loops formed;The distribution of ecological corridors presents a downward trend with the increase of the Dianchi buffer zone distance.The distribution of ecological corridors presents a downward trend with the increase of altitude and slope;more distributed slope directions are flat,west and southwest,less distributed slope directions are northeast and north;The shortage of ecological corridor and its network mainly shows that low degree of connection,low rate of green road construction and low complexity of network;by reducing the number of gap and increasing the stepping stone,the connectivity of the corridor and network can be enhanced and the construction rate of the greenway cab be improved,and the shortage of ecological corridor and ecological corridor network can be optimized outward from the periphery of Dianchi.