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With Remote Sensing and Geographic Information System Spatial analysis technology continues to evolve, and land use / cover change as an important area of ??today's global change research, has not only limited to the number of land use and structural changes of quantitative research, while is increasingly focused on land use spatial and temporal pattern change and its process, in order to better understand the process and mechanism of land use change, and timely adjustment of human economic activities, the reasonable land resources, and sustainable use. Landscape ecology as an emerging cross-discipline, and has a great advantage in the Landscape changes and process research. The land-use change in the original ecological characteristics, has a lot of similarity in the structure and function of the landscape patches in landscape ecology and land use change study of different types of land plots. In view of this, the introduction of the principles and methods of landscape ecology to land use changes which, by means of RS and GIS, remote sensing processing software and Fragstats3.3 landscape index calculation software, the Daming County, the County Land Use Spatial and temporal pattern The process of change and development trend analysis. Daming County in 2005 and 2008, two TM remote sensing image interpreted to obtain land use data, and the completion of the production of land-use the status and forestry land status quo Figure Daming County land, on this basis, the use of space-time pattern and dynamic changes, draw the following conclusions: (1) Daming County land use types in farmland mainly arable land in 2005 and 2008, respectively, accounting for 77.78% and 73.32% of the total land area. Second is the land of urban residents accounted for 13.94% and 14.67% of the total land area in 2005 and 2008, respectively, two periods of land for these two categories accounted for county area in about 90%. Forest land, traffic land, waters and other relatively smaller land. The forestry land mainly Chunlin land, pure forest land area in 2005 and 2008, respectively, accounting for 66.76% and 72.52% of the woodland area. Followed by unpaired and mixed forests, respectively in 2005 and 2008 accounted for 19.56% of the forest land area, 7.02% and 17.64%, 7.39%. Two periods Sowers, sparse, and other relatively small area of ??land suitable for afforestation. (2) from the point of view of changes in land use types from 2005 to 2008, although the decrease in cultivated area, but the arable land has been in the absolute dominance. In addition, the woodland area of ??change is the most obvious, from 2005 to 2008 increased 2951hm2, 68.7% of the forest area in 2005, little change in other types of landscape area, in a more stable state. From the conversion of land use types situation, the reduction of arable land is the most important source of recharge to other land use types. Forestry land, landscape, Chunlin landscape has been in a dominant position. Chunlin area from 2005 to 2008, an increase of 2558.61hm ~ 2, 2005 Chunlin 94.95% of the total area. Followed by minors and mixed forests, the area change from 2005 839.9hm ~ 2,301.59 hm ~~ 2 to 2008 1277.69hm ~ 2,535.07 hm ~~ 2. Additional area is 51.23% of the total area of ??2005 77.42%. Other land type area of ??small changes. From the conversion of land use type situation, relatively simple conversion between the various types of forestry land, are generally caused by a change to another, which Chunlin move in or out of the many types of mixed and immature forest The main source of transferred. (3) in the landscape pattern and dynamic analysis, from 2005 to 2008 for various land use types and forestry land types are the same trend. Increase in the number of patches of each land use type, larger patch density, largest patch index decreased, average plaque area decreases, plaque type spread, the advantage of reduced landscape presents the trend of fragmentation; patch shape index, divided dimension is rising constantly increasing the intensity of human land. But the entire landscape pattern using Shannon diversity index, Shannon evenness index analysis of distributed parallel index and spread index, each index has not changed significantly between the various types of landscape more The big change, but did not cause significant changes in the overall landscape pattern. (4) human impact index model derived of Daming County human activities impact on the region as a whole is growing, regional human impact index from 50.37% in 2005, increased to 52.53% in 2008. On this basis, further analysis of the main driving force factors cause Daming County land use changes in the landscape types factors - population, policy, socio-economic development.
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