Study On The Landscape Pattern Changing Of Urban Forest Based On RS Technology

By studying generation,development and evolution of urban forest at home andabroad,and combine with the problem and present situation of our country. And summarizeexperiments and achievement in related area.We mainly discuss the changing process of thelandscape pattern and ecological benefits in the city of Xi’an. Taking the example of urbanforest in Xi’an.By analyzing the remote-sensing images in diffenrent ages.including2000,2009and2012.Taking advantage of ENVI4.8,ArcGIS and FRAGSTATS to analyze thechange of landscape pattern in Xi’an,and clarify the ecological funcation in Xi’an.On thebasis of all,we can give advice and make suggestiongs for the development of urban forest inXi’an.And provide a reference for the urban planning of Xi’an.The article content includes thefollowing points:1.By using RS,and comparsion different classification methods we select SVM to get thelandscape claasification map.At last,we use landscape index analysis method to study Xi’an.2.On patch level,from2000to2012,the landscape pattern in Xi’an,the building landincrease72.68%,the forest landscape decrease9.01%,the water landscape decrease24.05%and farmland landscape decrease53.96%.Tthe influence of human activities is heavy.3.On landscape level,from2000to2012,the number of patch in urban forest is increasinginsantly,but the landscape diversity index and evenness index decreasedcontinuously.Landscape homogenization and fragmentation increase at the same time.4.City forest planning should synchronize with the city planning.We should improve thedegree of integration of city forest landscape in further,and increase the effect of urbanecological funcation.As far as possible,combine suburbs and urban area.Through theconstruction of different forest regions,to strengthen and improve the ecological constructionscale.To achieve sustainable development of city forest.5.In the aspect of ecological function using,there are many problems in the study area.Onthe base of reasonable forest planning and balanced distribution,combining the forest planningin Xi’an,let more and more urban residents to enjoy the city forest ecological dividend.