近五年东北沿海城市生态环境质量变化与分析

Changes and analysis of eco-environmental quality in Northeast coastal cities in recent five years

生态环境质量是生态环境的优劣程度,反映了生态环境对人类生存及社会经济持续发展的适宜程度。东北某沿海城市根据卫星遥感监测及生态数据统计,对城市生态环境质量进行评价。评价结果表明,大连市近五年生态环境质量总体保持稳定,各年生态环境状况级别均为良,生态环境状况变化度级别除2018年为略微变好外,其他各年均为无较明显变化,变化主要原因是2018年水资源含量和植被覆盖均有所上升;大连市各区市县生态环境质量总体保持稳定,生态环境状况级别长海县各年均为优,其他地区各年均为良;大连市生态环境状况除普兰店区各年均无明显变化外,其他区市县均呈现不同程度的波动特征。

The quality of ecological environment is the quality of ecological environment,which reflects the suitability of ecological environment for human survival and sustainable social and economic development.Based on satellite remote sensing monitoring and ecological data statistics,the urban ecological environment quality of a coastal city in Northeast China was evaluated.The evaluation results show that the eco-environmental quality of Dalian has generally remained stable in recent five years,and the level of Eco-environmental Status in each year is good.Except that it has slightly improved in 2018,there is no obvious change in other years.The change is mainly due to the increase of water resources content and vegetation coverage in 2018.The eco-environmental quality of all districts,cities and counties in Dalian remains stable on the whole.The level of Eco-environmental Status is excellent in Changhai County and good in other regions.Except that there is no obvious change in Pulandian district every year,the ecological environment of Dalian presents fluctuation characteristics in different degrees in other districts,cities and counties.