基于Landsat 8影像的水体指数与地表水化学特征关系——以艾比湖流域为例

发布时间：2018-05-02 18:05

本文选题：遥感 + 水体指数　；参考：《中国沙漠》2016年05期

【摘要】：湖泊对于干旱区生态与环境变化有着重要的影响,其水化学特征变化对干旱区绿洲生态环境的变化和水环境变化有着直接的作用和重大影响。以艾比湖流域典型区域为研究对象,对2014年5月野外实地采集的地表水样进行理化特征测试,测出水化学特征各种离子的含量,然后在同一时期遥感影像上提取该区域6种水体指数。利用SPSS软件对水体指数和水化学特征值进行相关性分析。结果表明:水体指数AWEI、EWI、NWI和RNDWI与水化学特征离子的相关性较小(0.2R0.34),NDWI和MNDWI除了与水体pH值的相关性较小(R=0.276)外,与其他水化学特征的相关性均较大(0.569R0.827)。对水体指数NDWI和MNDWI与水化学特征值的关系进行分析研究,并构建它们之间的关系模型。
[Abstract]:The lake has an important influence on the ecological and environmental changes in arid areas. The change of hydrochemical characteristics has a direct and significant influence on the change of the ecological environment and the change of water environment in the arid area. Taking the typical area of the Ebinur Lake Basin as the research object, the physical and chemical characteristics of the surface water samples collected in the field in May 2014 are tested. 6 kinds of water index were extracted from remote sensing images at the same time. The correlation analysis of water index and hydrochemical characteristics was carried out by SPSS software. The results showed that the correlation between water index AWEI, EWI, NWI and RNDWI was smaller than that of hydrochemical characteristics (0.2R0.34), NDWI and MNDWI were removed. The correlation with water pH value is smaller (R=0.276), and the correlation with other hydrochemical characteristics is larger (0.569R0.827). The relationship between water index NDWI and MNDWI and hydrochemical characteristic values is analyzed and the relationship model between them is constructed.

【作者单位】：新疆大学资源与环境科学学院/绿洲生态教育部重点实验室;新疆大学新疆智慧城市与环境建模普通高校重点实验室;
【基金】：国家自然科学基金项目(41361045,41130531) 新疆维吾尔自治区青年科技创新人才培养工程项目(2013731002)
【分类号】：X87;X143

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