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  

Relationship between Water Index and Chemical Characteristics of the Surface Water:A Case Study in the Ebinur Lake Basin

作　　者：任岩[1] 张飞[1,2] 周梅[1] 王娟[1] 李晓航[1] 张月[1] 

机构地区：[1]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,乌鲁木齐830046 [2]新疆大学新疆智慧城市与环境建模普通高校重点实验室,新疆乌鲁木齐830046

出　　处：《中国沙漠》2016年第5期1451-1462,共12页Journal of Desert Research

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)

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(0.2<R<0.34),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(0.569<R<0.827)。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。Lakes have important effects on ecological and environmental change in arid areas,thus the change of lake hydro-chemical characteristics has a direct role and significant influence on the change of arid area oasis ecology environment and the same as water environmental.In this paper,a typical region of the Ebinur Lake Basin as the research object,tested physicochemical characteristics with surface water samples,which collected from field on May in 2014,and extracted six kinds of water indices by using remote sensing images in the same period.Using SPSS software to analyze the correlation of water index and water chemical characteristics,found that correlation between the chemical characteristics of water and the water index（AWEI,EWI,NWI and RNDWI）was smaller（0.2R0.34）,NDWI and MNDWI correlation between the pH value of water bodies was smaller（R=0.276）,correlation with other chemical characteristics of water was larger（0.569R0.827）.This article mainly studied the relationship between water index NDWI,MNDWI and the value of water chemical characteristics,built the relationship model at last.

关 键 词：遥感 水体指数 地表水 水化学特征值 

分 类 号：P596[天文地球—地球化学]