The Study Of Landscape Pattern Evolution Of Waterfront Space At The Main Urban Area In Kunming City

Kunming is one of the highland lakeside cities which has a fragile and sensitive landscape pattern.Ecological problems such as water pollution and landscape fragmentation are especially prominent In recent years,with urban construction and land development.The evolution of landscape pattern is the key to the ecological restoration and sustainable development of Urban Waterfront.This thesis is divided into three parts.(1)Study of landscape pattern evolution.Based on the GF-1(2015,2016)and Google Earth images(2016).Land use map,landscape index analysis,landscape graph and field survey research methods are used in the study.Described the status quo of waterfront landscape type and so on.The results show that Macro-level,urban landscape distribution is more concentrated,other green areas were linear arrangement,the number and density of patches is much higher than other types of landscape,a higher degree of crushing.Meso level,artificial plaque sample accounted for 77.711%,more regular landscape structure,the most serious artificial Lake view.In the end view of a high connectivity as follows:linear waterfront,planar waterfront,point waterfront space.Micro-level,the sample in the natural bank accounted for 12.069%,poor waterfront landscape of the poor,the transitional ecosystem almost disappeared.(2)Evolution law of landscape pattern.Based on Landsat satellite imagery data(1996-2015)and Google Earth images(2006,2016).Methods are used in macro and meso level studies on the waterfront in Kunming city,such as Land use transfer map,transfer matrix and landscape index analysis,land transfer characteristics,landscape pattern evolution and node changes.The results show that,at the macro level,the landscape pattern is in a dynamic process during the 19 years,and the landscape matrix type of waterfront space shifts to the urban construction land.The landscape was developed from homogeneous structure to dominant landscape structure;the strongest landscape heterogeneity in 2007 was the turning point of forest landscape change.The gradual transfer of bare land to woodland landscape indicates that the policy of protection in Dianchi basin has achieved certain results.In the meso level,in the 10 years,the spot water patches decreased continuously,the total number of patches increased continuously and the fragmentation of the landscape increased.The landscape structure changes of each waterfront space have their own characteristics,the artificial landscape nodes and connections have increased,the water permeability of the landscape has decreased.(3)Cause of evolution of Landscape Pattern and Suggestions.Based on the linear regression model,the qualitative and quantitative analysis of landscape pattern evolution is carried out.The results show that:Human factors are the main reason for the evolution of waterfront landscape pattern in Kunming.The changes of landscape patches are most affected by policies and urban planning.The optimization Suggestions of macroscopic,central and micro levels will be proposed to optimize the landscape pattern of the waterfront space in Kunming city.