Study On Developmental Potential Of Urban Forest On Basis Of Land Use Change

Taking Wuhan city for example,The article analyzes patterns of land use and land cover change, transition matrix and rate of land use types from 1985 to 2000,by applying software of landscape pattern analysis,single and integrated land use model and the Markov transition matrix.Further more, the impact of land-use change factors and developmental potential of urban forest were discussed in the paper.The results showed that:(1) Land use and land change degree:From 1985 to 2000,landscape patterns have been changed very little shows that development and planning of Wuhan city are reasonable.But different types of land areas change larger.The areas of land for construction increase rapidly,land for unused is on the other way.Cultivated land and woodland and grassland change very little.From the proportion of overall landscape,paddy field and dry land exceeded in total landscape,but less than proportion, percentage of water area and land for construction is upwards,woodland and grassland is down trend.(2) The transition matrix and rate of dynamic for land use and land cover change:the areas of woodland have been changed very little,areas of grassland reduced because of transfer to woodland.Due to carry over land for construction,water area has increased year by year. Although,land for unused transfers to land for construction.So the scale of urban construction is still a significant rising trend.(3) The factors of land use and land cover change:Wuhan City,on the one hand,the low-lying,space magnanimous,is focused on expansion of regional waters.The mean rainfall is more than 1000millimetre which results to large surface runoff.It's a great threat to people's production and living security.Therefore natural conditions have an effect on land use and land cover change to some extent.On the other hand,economic system makes process of industrialization and urbanization more rapidly,lifestyle changes and values lead to changes in land-use types.(4) Developmental potential of urban forest in Wuhan city:The article analyzed the potential of urban forest in two respects,Comprehensive potential will be enormous because of policies,economy and culture.By means of ecological land,the results shows the area of available land is between 51028.75 to 113537.77 hectare in future,which will make the landscaping ratio increase about 6.01 to 13.37percentage.One of them is land for unused,which will increase the forest coverage rate 4.1 percentage points.waterfront,roads,farmland and other green potential between 1.91-9.27 percentage points.