Analysis Of LUCC And Driving Forces In Shenmu City

The study of Shenmu city is rarely focused on land use / cover change.However,the analysis of land use / cover change in Shenmu city is helpful to guide people to correct land use behavior,and plays an important role in promoting the harmonious development of regional economic environment.Therefore,using three remote sensing images of 2005,2010 and 2015,this paper analyses the land use / cover change and its driving force in Shenmu city.The results show that:(1)The main category of the research area was woodland.From 2005 to 2010,the area of construction land and unused land was increased,and the area of woodland,grassland,water and cultivated land was reduced.From 2010 to 2015,the area of construction land,grassland and water area was increased,and the area of woodland,cultivated land and unused land was reduced.During the whole study period,the growth of construction land was more prominent.In the early stage,The construction land was mainly converted from woodland and cultivated land,and from woodland and grassland in the later period.The reduction of cultivated land was more prominent,mainly for the conversion to the woodland and grassland.(2)In the three periods of 2005-2015 years,the average degree of grassland abundance index was relatively high,and it shows an upward trend,indicating that the distribution of grassland was most extensive in Shenmu city.The abundance index of woodland was relatively high,and it shows an arc trend that increases first and then drops,indicating that the change of woodland is easily disturbed by the outside world.From 2005 to 2010,the importance index of woodland was highest,indicating that woodland was the dominant type of land in the Shenmu city.From 2010 to 2015,the importance index of grassland was highest,indicating that grassland was the dominant type of land in the Shenmu city.(3)Under the different topographic factors grade,the main classification of the Shenmu city is more distinct.Among them,the cultivated land,woodland and grassland were reduced in all elevation and slope,woodland and grassland in high grade and low elevation area with the most obvious changes.The change of cultivated land mainly concentrated in 0-2 degree slope,and reduced from 2005 to 2010.The construction land was growing faster on the slope of 0-15 degrees and on the elevation of 853-1425 m.The woodland had the largest distribution area on the 1044-1234 m elevation and 2-15 degree slope,and the change was smaller.The grassland was mainly distributed in the 2-6 degree slope and the 1044-1234 m elevation,and showed a decreasing trend.(4)Based on the qualitative analysis of driving force of land use and cover,and the quantitative analysis of SPSS software,this paper determines that the main driving forces of land use / cover change are population growth,the increase of economic total,and the continuous development of science and technology.At the same time,this paper puts forward the countermeasures and suggestions to optimize the use of land resources in Shenmu city from all aspects of construction,management and investment.