Analysis On The Temporal And Spatial Variation Characteristics Of Land Use In Mudanjiang City

The land carrys the important resources of human survival and development.Interact with the properties of the land itself,human land use is for long-term sustainable remediation activities on land,land use change is the core theme of the current global change research.With the development of economy,fast-growing of in human population and the accelerated process of urbanization,the constant land use change,and the long-term effects of natural factors will also cause the change of land use structure,which also has a certain impact on the environment.In order to coordinate the development of population,economy and environment,it is of great value to study the change of land use.With the support of ArcGIS and remote sensing technology,the land use data extracted from the four remote sensing images of Mudanjiang city from1986 to 2015,as well as the elevation and slope terrain data of Mudanjiang.The spatiotemporal dynamic change analysis of land use,the transfer of land use change characteristics analysis in Mudanjiang city for 29 years,we analyses the causes of Mudanjiang city land use change driving factors and puts forward the measures of sustainable land use,providing the basis for land use in Mudanjiang city healthy development,rational development,scientific development of land related policies,and the economy of Mudanjiang has important practical significance for the harmonious development of the environment.The main result of research indicated:(1)Mudanjiang city land use in woodland,followed by dry land occupies a large proportion,and the county(city)land use spatial structure difference is obvious,the advantages of land for construction in the urban district of Mudanjiang is the highest,higher than the city average of 5 times;(2)The situation of the number of land use change in Mudanjiang shows that dry land and construction land is increased during 29 years.The overall increase of the construction land is 32%in the first place,increasing with the rapid growth rate of 30%especially after 2005.In the development and utilization of land,the development degree in 2005-2015 is high than the development period of 1986-2005.(3)The situation of the extent of land use shows that the comprehensive index of land use in Mudanjiang increased during 1986-2015,indicating that the degree of land use in Mudanjiang city is in the period of development,although there is a slowly increasing trend of land use change degree,the utilization rate is low,the development speed is relatively slow.(4)From the view of spatial structure of land use change,land use change in the space is different between Mudanjiang city counties(city).The difference in construction land is relatively highest during 1986-1996,the difference between paddy field and water is relatively highest during 1996-2005,the difference in water is relatively highest during 2005-2015,but the whole land use of types is not obvious in each time.The land use diversity index shows that Mudanjiang city's land use types with low complexity,becoming rich year after year,and the complexity of the western region is relatively high.(5)The terrain factors has a significant effect on all kinds of land use types in Mudanjiang city,the transfer of paddy field and waters are mainly concentrated in the low terrain area,the transfer of forest land is mainly concentrated in the high terrain area,and land transfer speed increasing,transfer position is outstanding gradually.The grass transfer mainly in terrain,and other land is mainly in the low terrain area during 1986-2005,the transfer during 2005-2015 is mainly concentrated in the area,the high terrain,indicating that the transfer extend to high expansion.(6)The terrain factor also has a significant impact on the rate of change of land use in Mudanjiang city.The rate of change of land use overall reflects the distribution decreased with the increase of terrain level.With the quickly change of land use,the low terrain area is active district in the changes of land use types.The speed of land transfer in 2005-2015 is highest.