Tianjin Jinghai County Land Use Landscape Pattern Changes And Its Ecological Security Research

With the continuous development of the population and socio-economic, regional construction land expansion, resulting in land use structure and landscape changed greatly, resulting in a series of adverse effects on the ecological security of the region. Landscape ecology principles and methods adopted to study the spatial pattern of land use, able to clearly reflect the landscape pattern of land use and spatial variability of the security situation in ecology can help us grasp the evolution of land use landscape pattern inherent laws, so as to land use planning and ecological planning and design to provide the necessary basis.In this paper, RS and GIS technology, Jinghai County in2005and2011both interpret remote sensing data analysis, combined with socio-economic statistical data and field investigation of the study area, Jinghai County land use types studied the spatial variation of the process, to explore Jinghai County nearly five years of land use change laws; based on landscape ecology principles and methods, based on the analysis of data ArcGIS, using Fragstats landscape pattern analysis software, select the relevant landscape indices, changes from plaque characteristics, landscape spatial structure, diverse landscape and other aspects of Jinghai County, changes in land use and landscape pattern analysis. On this basis, combining the social and economic conditions in the study area, building evaluation index system based on land use and landscape pattern of ecological security, ecological security evaluation conducted Jinghai County, and accordingly put forward to improve the safety of landscape pattern of ecological sustainable development proposals. The results showed that:(1) between2005-2011, land-use change from the perspective of landscape pattern analysis, arable land, water, and gradually shrinking trend of other unused presents, while construction land, orchard, woodland landscape is somewhat extended, uniform distribution of the various types of landscape and intensive level has increased, and the overall landscape pattern remained stable.(2) regional land use landscape pattern based on a comprehensive evaluation of ecological security, in2005and2011Jinghai County, ecological security evaluation level are generally the state discovered in2011by comparing the value of ecological security has increased slightly. After analysis of ecological security assessment results strengthen ecological protection area of arable land, forest, water, etc., to build rational land use landscape structure, control population growth and blind expansion of construction land, promote the coordinated development of social economy is improving regional ecological security the only way.