A Study On The Changes And Landscape Pattern Of The Land Use/Land Cover Based On GIS

With the development of the serious population-resources-environment issues, global change has aroused worldwide interest research. Among the issues, land use/cover changes (LUCC) is such a important topic that it becomes a major part in international research schemes for global change. Spatial characteristics, temporal dynamics, and environmental effects are the major aspects of LUCC research. Land consolidation is an effective means to causes the land use pattern to tremendous changes in a short term. It can solve the farmland extensive use in most parts of China and solve a series of issues such as the field road and the drain's unreasonable distribution. However, the main purpose of land reclamation in most regions is to increase the area of arable land, they neglect the ecological engineering building. It causes ecological problems easily. The land use pattern changes inevitably affect the stability of ecosystems. Especially in the environment land reclamation will damage ecosystem if it is handled improperly. Finally it reduces the land's productivity and affects the land resource's sustainable use. Many achievements are gained both in theory and in methodology at home and abroad. This present thesis draws upon landscape ecological theories and uses GIS to investigate the land use/cover change.In view of this, first, this present thesis applies the methods of landscape planning and designs to optimization of the land use pattern. It puts forward the connotation, principle, method of landscape planning and lay the foundation for the reasonable design optimization. To establish landscape indicators Evaluation System, this present thesis selects a number of landscape pattern indicators those suit plain area. Then, a Case Study of land reclamation in Anlu City, Hubei Province, this present dissertation analyzes the land use pattern of the study area by using landscape indicators Evaluation System, exposes the key problems of the landscape ecoconstruction in this area. On the basis of economic behavior and social behavior driven analysis, this present thesis decides the direction of landscape ecology planning and design, intergrating the ecological conditions of land use pattern. Second, according to the land-ecological adaptablity principle, ecological-economic effects principle, and landscape diversity principles, this present thesis puts forward to an optimized spatial design for the study area's landscape pattern using ecological landscape planning and design means, aims to create a new, land-use sustainable, and economic-development sustainable landscape pattern. Finally, this present dissertation does the landscape pattern analysis to the optimized study area: the field is square in the region, the roads are reticular, the drains are equivalent interchange, shelterbelt are connected, plaque volume reduce, the shape is more conductive to agricultural production. The landscape's fragmentation is lower, landscape diversity and landscape heterogeneity are the same, landscape dominance is increasing. The corridor connectivity enhances, the landscape structure is more rational. Thus a heterogeneous landscape pattern will be produced by the optimization. These tremendous changes will ensure sustainable land use and economic development as well as greatly improve the productive potential of the ecology system to increase its economic effectiveness.This present thesis creates a set of integrated research system and method from landscape pattern changes to landscape pattern design optimization, which deepen the landscape pattern study and strengthen the application of landscape ecology study. This present dissertation explores methods for LUCC study.