基于RS和GIS的土地生态环境质量评价——以重庆市为例

在山地城镇中，地形地貌对土地生态环境质量及土地利用方式产生着重要的影响，笔者以重庆为例，利用遥感（RemoteSense，简称RS）与地理信息系统（GeographicInformationSystem，简称GIS）技术，参照《生态环境状况评价技术规范》，建立土地生态环境质量评价指数（LandEco—environmentIndex，LEI）模型进行评价分级，结果表明：重庆土地生态环境质量一小时经济圈明显好于渝东北和渝东南两翼，盆地好于山区，城口县和巫溪县土地生态环境压力大．这与重庆各地的土地利用、水资源、地形地貌等因素有关，也与实地考察和历史资料分析结果相吻合，表明评价模型是科学客观的，为城镇土地生态环境质量评价提供了一定的思路和方法．

EVALUATION OF LAND ECO- ENVIRONMENT QUALITY BASED ON RS AND GIS——A CASE STUDY OF CHONGQING

In the mountain city, topography had an important influence on land eco - environment quality and land use patterns. This paper took Chongqing as a case study by using RS and GIS technique. Index model of urban land eco -environmental quality assessment was constructed to make a classification by referring to ＂Technical specification for evaluating eeo -environment ＂ The results show that： land eeo -environmental quality in one - hour economic circle was much better than the Northeast and Southeast of Chongqing and basin＂ is better than mountain＇s. There was land eco - environmental pressure in Chengkou and Wuxi County. These were related to land use, water resources, topography, etc, and coincided with the survey and historical data. The evaluation model was scientific and objective, and it provided urban land eco - environmental quality assessment with some ideas and methods.