| 长春市南湖叶绿素a浓度高光谱估测模型研究 |
| |
| 引用本文： | 段洪涛,张柏,宋开山,王宗明,胥彦玲.长春市南湖叶绿素a浓度高光谱估测模型研究[J].水科学进展,2006,17(3):323-329. |
| |
| 作者姓名： | 段洪涛 张柏 宋开山 王宗明 胥彦玲 |
| |
| 作者单位： | 1.中国科学院东北地理与农业生态研究所, 吉林, 长春, 130012; |
| |
| 基金项目： | 国家自然科学基金;中国科学院知识创新工程项目 |
| |
| 摘 要： | 利用野外高光谱仪(ASD Field Spec radiometer)在长春南湖进行了反射光谱测量和同步水质采样分析,通过研究水体藻类叶绿素a浓度与其高光谱反射特征之间的相关关系,采用单波段反射率、反射率比值法和一阶微分法分别建立了叶绿素a的高光谱定量模型。结果表明:三者与叶绿素a线性相关程度都比较高,决定系数在0.70左右,而且其显著水平P<0.01,都可以用于叶绿素a的定量遥感,其中单波段模型效果最好。为今后利用高光谱传感器在南湖进行叶绿素a浓度大面积遥感反演提供了研究基础。
|
| 关 键 词： | 叶绿素a 高光谱 模型 长春 南湖 遥感 |
| 文章编号： | 1001-6791（2006）03-0323-07 |
| 收稿时间： | 2004-12-14 |
| 修稿时间： | 2005-03-07 |
Hyperspectral model of chlorophyll-a concentration in Nanhu lake in Changchun |
| |
| DUAN Hong-tao,ZHANG Bai,SONG Kai-shan,WANG Zong-ming,XU Yan-ling.Hyperspectral model of chlorophyll-a concentration in Nanhu lake in Changchun[J].Advances in Water Science,2006,17(3):323-329. |
| |
| Authors: | DUAN Hong-tao ZHANG Bai SONG Kai-shan WANG Zong-ming XU Yan-ling |
| |
| Institution: | 1.Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, China;2.Graduate School of CAS, Beijing 100039, China;3.Institute of Environment Science, Xi'an University of Technology, Xi'an 710048, China |
| |
| Abstract: | This study presents an approach to the determination of the trophic parameters of chlorophyll-a from field reflectance spectra in Nanhu lake in eutrophic status in Changchun.The reflectance spectra was measured using ASD FieldSpec spectrometer from April to september in 2004. Based on in situ water samplies and the reflectance measurements,the features of the spectral reflectance of the water are discussed.Algorithms are developed to evaluation the spectral data.The single band R_(753nm),the spectra ratio of R_(753nm)/R_(681nm),and the reflectance first-derivative of 700 nm,showing a linear relationship,are found to be significantly correlated with the concentration of chlorophyll-a,and the determinative coefficient R~2 gained by using the single band is higher than that gained with other two models.There is satisfactory correspondence between hyperspectral models and chlorophyll-a concentration,therefore,it is possible to monitor the water quality of Nanhu lake throngh the hyperspetral remote sensing data. |
| |
| Keywords: | chlorophyll-a hyperspectral model Changchun Nanhu lake remote sensing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
| 点击此处可从《水科学进展》下载免费的PDF全文 |
|
