基于遥感的赣江源地区地表生态环境评价

鉴于传统人工调查生态环境时人力、物力投入较大,且不利于宏观大范围的观测.文中利用选取赣江源地区的石城县为研究区,以Landsat卫星的TM影像为数据源,利用遥感技术提取关键的生态因子,并将植被覆盖度、土壤指数、坡度等信息进行归一化,建立生态环境评价模型.运用该模型对赣江源地区近20年的生态环境质量进行动态监测.结果表明:赣江源地区的总体自然生态环境良好,其东北部和东南部及西部的自然生态环境好于中部地区,生态环境整体不断改善.采用遥感方法进行赣江源生态环境综合评价是可行的.

Assessment of the ecological environment in Ganjiang source region based on remote sensing

Given that the traditional artificial ecological investigation needs larger human power and material resources, and is not conducive to a wide range of macro-observation, the article selects Shicheng county in Ganjiang source region as research area, with data source of TM image from Landsat satellite, using remote sensing technology to extract the key ecological factors, normalizing the vegetation coverage, soil index, slope information to build an assessment of the ecological environment model. Using the model for dynamic monitoring of the ecological environment quality in Ganjiang source region in the nearly 20 years, the result shows that the overall natural ecological environment in Ganjiang source region is fine, the natural ecological environment in the northeast, southeast and the west are better than that of the central region, and the overall ecological environment is improving. In the whole, using remote sensing method for ecological environment comprehensive evaluation of Ganjiang source region is feasible.