其他题名Retrieval of non-optically active water quality parameters by hyperspectra for river network waters in the Pearl River estuary
蔡建楠1,2; 刘海龙3; 姜波3; 陈吟晖1,2; 李杰鸿1,2; 吴思晓2; 梁建霞2; 黄华4; 邢前国3
发表期刊热带海洋学报
ISSN1009-5470
2021
卷号40期号:1页码:58-64
关键词珠江口河网非光学活性参数高光谱水质反演波段比值
研究领域Oceanography
英文摘要Field spectra and water quality measurements were performed in Zhongshan City and its adjacent river network in the Guangdong-Hong Kong-Macao Greater Bay Area.The hyperspectral reflectance characteristic of the river network and its correlation with the concentration of two non-optical activity parameters Chemical Oxygen Demand (COD_(Cr)) and Total Phosphorus (TP) were analyzed.The results showed that the spectral reflectance of the river network was mainly affected by suspended particulate matter and chlorophyll-a.In the range of 500~680 nm,the spectral reflectance of the water had negative correlations with the concentrations of COD_(Cr) and TP.Compared with the single band,the reflectance ratio of the specific band had higher correlations with COD_(Cr) and TP concentrations.The reflectance ratio band combinations with the highest correlations with COD_(Cr) and TP concentrations are R_(675)/R_(794) and R_(690)/R_(815),respectively.The water quality retrieval models that depend on the band combination show good estimation accuracy,with 27.2% and 32.1% of the average relative errors,indicating that the hyperspectral technology has good potential application for non-optical activity parameters (COD_(Cr) and TP) retrieval in the river network of the Pearl River estuary.
中文摘要以粤港澳大湾区中山市及其邻近水域河网水体为试验区,同步采集现场光谱及水质数据,研究受测水体的高光谱反射率特征,并分析非光学活性参数中化学需氧量(COD_(Cr))、总磷(TP)浓度与高光谱反射率的相关性。结果显示,各河流水体光谱反射率主要受悬浮颗粒物和叶绿素a的影响;在500~680nm波段范围内,水体光谱反射率大小与COD_(Cr)、TP浓度呈负相关关系;与单波段相比,特定波段的反射率比值与COD_(Cr)、TP浓度值的相关性较高,与COD_(Cr)、TP浓度值相关性最高的反射率比值波段组合分别为R_(675)/R_(794)、R_(690)/R_(815)。选择上述波段组合建立的水质反演模型具有良好的估算精度,模型估算平均相对误差分别为27.2%、32.1%,表明高光谱技术在珠江口河网水体非光学活性参数COD_(Cr)、TP浓度反演上具有较大的应用潜景。
文章类型Article
资助机构中国科学院科研装备研制项目; 国家自然科学基金项目; 广东省科技创新战略专项
收录类别CSCD
语种中文
CSCD记录号CSCD:6900596
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/30304
专题中科院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心
作者单位1.中山市环境监测站,广东中山528403;
2.中山市生态环境局,广东中山528403;
3.中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,山东烟台264003;
4.广东环境保护工程职业学院,广东省无人机环保应用工程技术研究中心,广东佛山528216
推荐引用方式
GB/T 7714蔡建楠,刘海龙,姜波,等. 珠江口河网水体非光学活性水质参数高光谱反演[J]. 热带海洋学报,2021,40(1):58-64.
APA蔡建楠.,刘海龙.,姜波.,陈吟晖.,李杰鸿.,...&邢前国.(2021).珠江口河网水体非光学活性水质参数高光谱反演.热带海洋学报,40(1),58-64.
MLA蔡建楠,et al."珠江口河网水体非光学活性水质参数高光谱反演".热带海洋学报 40.1(2021):58-64.
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