Temporal And Spatial Pattern Evolution Of Ecological Environment Vulnerability In Liangshan

Ecological environment is an important condition for the survival and development of human beings,and is the material basis for the continuous development of social economy.The change of ecological environment is not only related to the change of natural environment,but also influenced by human activities.It is of great strategic significance for the sustainable development of human society to deal with the relationship between the good man and the ecological environment scientifically,and to realize the harmonious coexistence between man and nature.In recent years,with the rapid development of social economy,the contradiction between human and natural environment is becoming more and more obvious and improve people's awareness of environmental protection,one of the core research content of regional ecological environment vulnerability and ecological security change has become a global environmental change.Liangshan is located at the junction of Sichuan and Yunnan in the southwest of Sichuan province.It is not only an important area for the implementation of the western development strategy,but also an important ecological function area of the province and even the branch.The change of ecological environment vulnerability in Liangshan is not only closely related to the healthy development of social economy,but also has a certain influence on the whole province and the whole western region.Therefore,it is necessary to have a comprehensive understanding of the changes of ecological environment vulnerability in the region of Liangshan and to carry out comprehensive treatment and restoration of the ecological environment in the region.This study from the relevant research theories of domestic and foreign environmental vulnerability in the interpretation,and on this basis,the agriculture and animal husbandry in Southwest Mountain ecotone typical ecological environment fragile area of Liangshan as the research object,starting from the ecological environment in this area and the actual problems faced by using remote sensing and geographic information system technology the relevant research results,combined with the existing spatial and temporal patterns of 2000 ~ 2015 years in Liangshan area,the ecological environment vulnerability evolution exploration analysis.Based on the analysis of the temporal and spatial patterns of ecological environment vulnerability in Liangshan area from 2000 to 2015,the main achievements of this study are as follows:? The Liangshan ecological environment vulnerability distribution has the characteristics of gradient change decreased gradually from south to north.In general,the ecological environment of southern Liangshan is more vulnerable than the northern region,the degree of destruction of the ecological system is relatively obvious,the quality of the ecological environment is relatively low.? From the fragile ecological environment of space distribution difference analysis,we can know the level of Liangshan ecological environment vulnerability in spatial distribution characteristics also exist obvious regional difference.Severe and moderate fragile ecological environment areas are mainly distributed in several cities and counties in the state of social economy is relatively developed and the population distribution is relatively concentrated,the micro ecological environment and potential fragile areas are mainly distributed in Western Liangshan and most of the Northeast region.? Analysis of changes of vulnerability during the ecological environment of Liangshan region from the angle of time,a single dynamic change rate of each grade vulnerability assessment unit,showing moderate > potentially > severe > micro > light;Liangshan ecological environment vulnerability comprehensive dynamic change rate value is too small,the overall ecological environment that is not obvious the vulnerability change speed;overall status and trend variation index is described,the balance of the overall fragile ecological environment in the study area,the level of vulnerability is two-way conversion significant change;finally,fragile ecological environment analysis of the status changes of comprehensive index,the results showed that the ecological environment vulnerability of Liangshan overall situation a trend of gradual improvement,the objective reflects with the increase of time and environmental protection,people on the ecological environment governance And the series of important measures adopted by the protection are gradually playing a more obvious role.