Eco-system Vulnerability Evaluation Of Liaoning Province

In recent years about the ecological system and vulnerability of the academic research ingeography more common, but more for single factor and is studied, this paper is provincialperspective on the ecological system vulnerability in comprehensive evaluation, and it’s mainpurpose is for the provincial level zones and planning with basic theory and empiricalresearch, provide practical significance. According to the technical assistance in paper giventechnology method, by combining the main conditions in Liaoning province, including itsecological system features, causes and symptoms of specific discussion, the selection of thesoil erosion vulnerability index, land desertification fragile index and the sea erodesvulnerability index as a research key indices, and through a lot of literature material forreference to determine a quantitative index of the equation, such as general soil and water lossequation, etc. With emerging science and technology and widely used the system based onGIS technology evaluation method for the study of the main technical support and innovation,through the grid technology, between tables assignment and spatial interpolation techniques tothe simple and direct and high-efficiency numerical graphics processing and visual graphicsexpress, reduce the previous research process of human factors error, improve the researchresults of the authenticity and usability.Through the analysis of the data for processing and space differentiation characteristicsdraw the conclusion: the soil erosion vulnerability index of29.39, in74county units havethree vulnerable areas; Desertification vulnerability index of63.47, in74county units have13vulnerable areas; Seawater intrusion vulnerability index of8.35, in74county units have twovulnerable areas; Through the polymerization vulnerability index in Liaoning province thateach of the vulnerability of the index of65.84, in74county units have15vulnerable areas.For each vulnerability index evaluation analysis, can understand the Liaoning province soilerosion vulnerable areas in western distribution low hills region and Liaozhong areas;Desertification vulnerable areas are mainly distributed in the northwest region Liaoning,western Liaoning province east; And the vulnerability of seawater intrusion mainlydistributed in the southern Bohai bay area and coastal areas. Ecological system in Liaoningprovince vulnerable areas mainly distributed in the Liao northwest area, the area has reached20%of the whole province area, the situation was very serious.