基于IDRISI的山东省土地生态安全评价研究

Study on Land Ecological Security Evaluation Based on IDRISI in Shandong

研究目的:通过对2009-2012年数据处理,获取山东省17地市土地生态安全评价值,为土地生态安全评价方法提供借鉴,为山东省土地生态安全保护工作提供参考。研究方法:运用z-score法将数据标准化处理,变异系数赋权法获取各项指标的权重,IDRISI进行数据运算处理,获取土地生态安全评价图和区划分布图。研究结果:通过对比分析2009-2012年山东省各地市土地生态安全变化,对沿海地区与内陆城市土地生态差异性做出研究,发现规律找出问题,提出研究对策。研究结论:沿海地区比内陆城市土地生态安全程度高,各地市的土地生态安全评价值差异性较大,2009-2012年山东省土地生态安全程度总体呈上升趋势。

The purpose of this study is to provide reference for land ecological security evaluation method and the protection of land ecological security in Shandong through processing the 2009-2012 data to gain land ecological safety evaluation of 17 cities in Shandong.Methods: using the method of Z-score to get data standardization and the method of weight coefficient of variation to obtain each index weight,it achieves maps of land ecological security evaluation and zoning distribution by IDRISI data's processing and operation. Research result : by analyzing the change of land ecological security in Shandong in 2009-2012,researching land ecological differences between coastal areas and inland city,it finds the rules and the problems,puts forward the counter measure. Conclusions: The land ecological security degree of coastal regions is higher than inland city,the land ecological security evaluation values around the cities are different,2009-2012's land ecological safety degree of Shandong is overall upward.