Ecological Effects Of Land Use Changes In Inland Wetland

Inland wetland is a general term for wetlands originated from the land outside coastal zone. The Futou Lake is an inland freshwater lake, a typical inland subtropical wetland, which has comparable studies with other inland wetlands. In recent years, the way and the level of human exploiting Futou area has changed greatly, which affects the land cover changes through cumulative effects. Land cover is the source and collection which supports the movement of the materials and energies on earth biosphere and geosphere, the changes of which may lead to the changes of landscape, climate, hydrology and biodiversity. Thereby, the ecological process of The Futou Lake wetland is affected, which result a series of environmental effects.Based on the data of land use change and wetland ecological environment variation, applying the GIS technology and relative ecology principles, this paper studies the law of LUCC evolution, and the law of LUCC and wetland ecological environment conjugate evolution, which has great theoretical and practical significance.The main content of this paper is as follows:The first part is an introduction, mainly elaborated the paper background and significance, the domestic and foreign research present situation, contents, methods and technical routes of the research.The second part analyzes the wetland and LUCC connotation and research model, together with previous research achievements puts forward the index system of evaluating landscape patterns change, and describes the natural environment and socio-economic conditions in research area.The third part mainly discusses the law of spatial-temporal evolution of the land use change in research area. Using dynamic model of land use, land utilization degree change model and spatial-temporal change model of land use, through the processing of the four stages remote sensing image, the paper explores the pattern and process of LUCC evolution of The Futou Lake wetland by phases.The fourth part first combine with the study of land use evolution pattern in the third part, analyzes the features of the change of overall landscape standard pattern, and the features of the change of different landscape type standard, the influences of land use change in The Futou Lake wetland on eco-hydrology and biodiversity, then discusses the law of interaction between the change of land use and the ecological environment in wetland. The fifth part is the discussion. The accuracy and uncertainty problems on the research process, the results of this study and previous research are discussed.The sixth part is a conclusion. It summarizes the main achievement and conclusions of the research, and as for the shortcomings and defects of this research, it brings up improvement measures and points out the direction of further research.