卫星影像分辨率对城市生态环境质量评价的影响研究  

Research on the Influence of Satellite Image Resolution in Urban Ecological Environment Quality Evaluation Based on Remote Sensing Ecological Index

作　　者：卢卓 侯金龙 鲁晗 Lu Zhuo;Hou Jinlong;Lu Han(School of Resources,Environment and Tourism,Capital Normal University,Beijing 100048,China)

机构地区：[1]首都师范大学资源环境与旅游学院,北京100048

出　　处：《绿色科技》2021年第22期173-177,181,共6页Journal of Green Science and Technology

摘　　要：根据生态环境质量评价的实际应用尺度需求,选择合适分辨率的卫星影像对提高作业精度和效率有一定的帮助。为了研究卫星分辨率对城市生态环境质量评价的影响,以波士顿和华盛顿地区的Landsat和Sentinel-2A遥感影像数据为数据源,采用遥感生态指数RSEI(Remote Sensing Based Ecological Index,RSEI)对这两个城市的生态环境质量进行了评价,根据生态环境质量等级的分类统计表以及专题图,比较了不同分辨率影像所得出评价结果的差异。结果表明:波士顿和华盛顿地区基于Landsat8数据计算得出的RSEI均值分别为0.4503和0.5086,基于Sentinel-2A数据计算得出的RSEI均值分别为0.4955和0.5649,说明了10m分辨率的Sentinel-2A数据比30m分辨率的Landsat8数据所计算得到的RSEI更高,所评价的生态环境质量更好。从RSEI专题图中可以看出,基于Sentinel-2A数据从空间上评价生态环境质量更为细致。According to the practical application scale requirements of ecological environment quality assessment,it is helpful to select appropriate resolution satellite images to improve the operation accuracy and efficiency.In order to study the impact of satellite resolution on urban eco-environmental quality assessment,the remote sensing based ecological index(RSEI)was used to evaluate the eco-environmental quality of Boston and Washington based on the Landsat and Sentinel-2A remote sensing image data.According to the classification statistical table and thematic map of ecological environment quality grade,the differences of evaluation results obtained from different resolution images were compared.The results show that:the average RSEI of Boston and Washington based on Landsat8 data is 0.4503 and 0.5086,respectively,and the average RSEI based on Sentinel-2A data is 0.4955 and 0.5649,respectively,which indicates that the 10 m resolution Sentinel-2A data is higher than the 30 m resolution Landsat8 data,and the ecological environment quality evaluated is better.It can be seen from the RSEI thematic map that the spatial evaluation of ecological environment quality based on Sentinel-2A data is more detailed.

关 键 词：RSEI 影像分辨率 Sentinel-2A 生态环境质量 Landsat8 

分 类 号：X87[环境科学与工程—环境工程]