A Tentative Exploration Of Landscape Pattern Of Qingxiushan Mountain Interesting Area In Nanning City

Qingxiushan Mountain is one of the famous interesting area in Nnanning city. It is like of the green lung of Nanning city. The changeable situation of landscape pattern of Qingxiushan Mountain plays an important role in the building of ecological environment in Nnanning city. Studying the landscape pattern of Qingxiushan Mountain will help to reflect accurately the disturbance which human activity do harm to the environment. This will also help to find regular rules of the changeable landscape. It will play an important role in the scientific fashions and reasonable scale of resource, improving environment of region, helping sustainable development of society and economy.In this paper, according to the theoretic of the landscape ecology and based on the GIS, after investigation in open country, landscape pattern were divided in the space photos which are 1:10000 of 1964, 1985 and 2001. After then, the areas and perimeters of patches were calculated. These numbers were regarded as the basic numbers. The landscape diversity, mean patch fractal dimension and landscape fragment and so on were calculated to analyze the changeable spatial structure of landscape pattern in Qingxiushan Mountain interesting area in Nanning city. On the other hand, the calculation and chart of comparison index have been advised in this paper. The analyzable methods of type change and characteristic boundary of representative patch have also been presented in this paper. And then, the changeable situation has been forecasted from 2005 to 2020. At last, human activity were considered to be the determining factors of the changeable landscape pattern in this paper. The results of study showed:(1) Landscape diversity of Qingxiushan Mountain increased with years. Landscape dominance reduced and evenness increased with years. The area of each landscape was comparatively equal. The phenomenon which one of the landscape type occupied a dominant position has not been found.(2) The fragment of the every green broad-leaf forest and p.massoniana forest were higher from 1964 to 1985. After then, it reduced a little. The farm land and orchard are human landscape. They were always higher than others, which also indicated that the forest in Qingxiushan Mountain was disturbed intensively by human activity.(3) The number of patch of each landscape will increased with years. But the average area of patch will be reduced. From the comparison of tensibility of representative patch, the shape of patch was more complex in 1985. After then, it became more regular with years; Analysis the conversion of representative patch, we found that the huge and continous patches had been became many small and discontinous patches with years.(4)According to the result of forecast, from 2005 to 2020, the area of forest will bereduced in addition to the every green broad-leaf forest, while the area of orchard, farm land and building land will be increased, which indicated that the forest in Qingxiushan Mountain will be always disturbed intensively by human activity.(5) The human activities were considered to be the determining factors of the changeable situation of landscape pattern. These disturbances are the building of road, residential area, fell trees, building land and public place of entertainment.