Analysis On Ecology Security Assessment And Spatial Pattern Of Lrgr In The Southwest Of China

Ecology environment field focused on Longitudinal Range-Gorge Region in home and abroad, because of the characteristic of ecological and economic corridor, typical mountainous topography and diversity climate belts from temperate zone to tropical in LRGR. This paper studied on assessment of ecological security in order to offering scientific bases of region ecology environmental management and decision-making.Based on model of press-state-response and working out assessment index of ecological security, this paper discussed the situation of human disturbance, natural environment and ecology security under the support of remote sensing and geography information system technology.1. The characteristics of press-state-response in LRGR appeared that: Press levels decreased gradually from center to south and north. And press that caused by human activity, was not strongly as a whole. Correspondingly, the human population density represented sparse in the whole and mass in the location. Human activity index had the trend of increasing from south and north to center; the state of LRGR was in middle level. It was influenced by relative well vegetation coverage, high landscape diversity, and relative large patch average area, ecological service value that high in the south and low in the north, and middle level ecological resistance. Good state area was distributed in XiShuangBanNa autonomy canton, and bad one distributed in glacier, urban or bare land zone; response of human activities in LRGR was also in middle level as a whole. Gentle response zone scattered in the north east and south, strong response zone lied in north, center west and southeast.2. Prediction alarm state occupied the largest area of LRGR. The points of it represented that quality of environment was not well, environment destroyed at a certain extent, the ability of recovery was weak, ecological problems were obviously and ecological disaster occurred frequently. So we should pay attention to potential ecological problems, reduce factors that caused environmental problems, enhance ecological compensation and resume construction in the future.3. Considered from point of regionalism, it can conclude that there were 22 counties in relative safe state, 25 counties in prediction alarm state, and 23 counties in middle alarm state, 18 counties in heavy alarm state.On account of special geography position, environmental condition and social economy state, problems of ecological security represented particularity that: the effect of corridor brought about diffusion affection of environmental problems; because of mountains and water system join the China to five countries of center south peninsula together, problems of ecology security had trend of over frontier. So it was focused by international pursuer; there were many kinds of ecological problems, which driving factors concluding natural and human activities. Therefore, in process of regional management and decision-making, we should fully consider the security state of different districts, develop reasonably, enhance protection and avoid international issues by ecology security problems.