Research And Realization Of The Land Ecological Evaluation System

Land is an important material base for human-kind’s survival. The ecological problems gradually stood out because of the contradiction between human and land. Carrying on the science appraisal and putting forward the reasonable and feasible measures and suggestions to the land ecological environmental quality is extremely essential. Responding to the diversity of data and problems about the traditional land ecological system which only have regional unity and is hard to evaluate the land comprehensively. This paper has researched and realized the system which can solve the problems mentioned above according to the actual demand. This paper summarizes constructed the index system model, optional indicators were designed to increase the flexibility of the system; and then using of the statistical methods for data processing and analysis to improve the assessment of efficiency of the system; and finally the land ecological system based on the study area Pei Xian is designed and developed to assess the results of the analysis. The main work and contents of this paper as follows:(1) Analyzing the causes of land quality from the natural, society, ecological and other factors and constructing the index system based on the relevant theories on ecological quality.(2) Analysis of survey data sources, and data organization and processing, in order to speed up the index calculation speed, improve system efficiency assessment.(3) According to the requirement of the land ecological system, analyze the functions, organize the data and design the database.(4) Utilize the GIS development tools to build system which has been applied for evaluating the land ecological environmental quality of Pei Xian and analyzing the results.