The Research Of Relationship Between Ecological Carrying Capacity And Land Use Change In Poyang Lake Ecological Economic Zone

Bearing capability of ecology is an objectively reflect that is the capacity of natural system to adjust, tolerance and the flow among various types of the land will affect the structure and function of ecological system. Eventually lead to change the bearing capability of ecology. Poyang hu Ecological Economic Zone is not only a rapidly developing industrial and urbanizational zone, but also an important ecological protection zone. Under the traditional extensive development mode in the past, Human aggressively explored the land which not only made trouble between human and pool, human and land within this area, but also made the ecologic environment to bear increasing pressure and produce adverse effects for sustainable development. Thus to discuss the relationship between ecological system and land-use change, which is not only the requirement of sustainable development research under the new period and new situation, but also the inevitable choice of bearing capability of ecology tending to depth study.This text use the land-use date from the two remote sensing in 1995 and 2008 to analysis the changes in the number and space of land-use of Poyang hu Ecological Economic Zone. at the same time, set an appraisal system with the framework of target, rule and index based on 34 Indicators to measure the bearing capability of ecology of 31 basic units of Poyang hu Ecological Economic Zone. On this basis, the use of statistical software to calculate the correlation coefficient between the land use change and ecological carrying capacity, and expand the qualitative analysis. The results show that:(1)Dominant land type of Poyang hu Ecological Economic Zone are farmland and forest land, but The most active and most influential types of land is urban construction land. The direction of land use change trend is that large areas of farmland and forest land turn to construction land and increasingly uniform type structure of land.(2)From 1995 to 2008 , Poyang hu Ecological Economic Zone weakened the capability to self-regulation of ecological system, reduced tolerance capacity , increase a substantial in social and economic pressure. which lead to different levels of carrying capacity of an integrated regional ecosystem change, but decreased.(3)There are two aspects of the relationship between ecological carrying capacity and land use change. On the one hand, the higher the degree of land use, the lower the regional ecological carrying capacity; On the other hand, the relations of development is the rate of change of land use decisions Changes in the extent of ecological carrying capacity-the more changes in the dynamic degree of land, the more greater ecological carrying capacity tends to become smaller, and vice versa.(4)Compare to economically developed areas, environment protection areas, and resource-based cities, there are similarities and differences in the relationship of ecological carrying capacity and land use change; The ecological carrying capacity and land use change consistent with the economically developed areas;The same as ecological environment protection on the form of land use change on ecological carrying capacity of perturbation,So the region has a distinctive local characteristics on coordination of land use change and ecology change.