投稿中心

审稿中心

编辑中心

期刊出版

网站地图

友情链接

引用本文:朱晶晶,陈晋,王胜强,杨伟,松下文经.基于MERIS数据的滇池叶绿素浓度时空变化(2003-2009年)及趋势.湖泊科学,2011,23(4):581-590. DOI:10.18307/2011.0414
ZHU Jingjing,CHEN Jin,WANG Shengqiang,YANG Wei,MATSUSHITA Bunkei.Spatial-temporal variation of chlorophyll-a concentration in Lake Dianchi from 2003 to 2009 and trend analysis based on MERIS data. J. Lake Sci.2011,23(4):581-590. DOI:10.18307/2011.0414
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 2837次   下载 1160 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于MERIS数据的滇池叶绿素浓度时空变化(2003-2009年)及趋势
朱晶晶1, 陈晋1, 王胜强1, 杨伟1,2, 松下文经2
1.地表过程与资源生态国家重点实验室, 北京师范大学, 北京 100875;2.日本筑波大学地球科学系, 筑波305-8572, 日本
摘要:
基于多时相MERIS数据, 本文对滇池叶绿素a浓度的时空变化趋势进行了研究.以野外实测数据为基础, 对应用较好的三种叶绿素a浓度反演模型进行了验证比较, 通过精度评价和误差分析选择最优的三波段模型;将其应用到经过几何纠正和大气纠正等预处理后的MERIS数据系列, 得到2003-2009年时间序列下的57幅滇池叶绿素a浓度分布图.分析结果表明, 在2003-2009年间, 滇池叶绿素a浓度总体呈周期性波动缓慢上升趋势, 每年2-3月浓度最低, 4-11月较快上升达到峰值, 12-1月开始回落;空间分布上, 叶绿素a浓度高值区多出现在滇池北部、岸边带等靠近城镇的人口聚集区域, 且浓度越高的季节, 空间分布差异越显著。
关键词:  叶绿素a  时空变化  滇池  MERIS数据  三波段模型
DOI:10.18307/2011.0414
分类号:
基金项目:国家自然科学基金项目(40871162)资助
Spatial-temporal variation of chlorophyll-a concentration in Lake Dianchi from 2003 to 2009 and trend analysis based on MERIS data
ZHU Jingjing1, CHEN Jin1, WANG Shengqiang1, YANG Wei1,2, MATSUSHITA Bunkei2
1.State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, P.R.China;2.Department of Geography, Tsukuba University, Tsukuba 305-8572, Japan
Abstract:
Spatial-temporal variation trends of Chlorophyll-a concentration in Lake Dianchi were analyzed based on MERIS data.First,three popular retrieval algorithms of Chlorophyll-a concentration were calibrated by field measurements.It was found that three-band model was the best one with higher estimation accuracy.Then, the optimized three-band model was applied to 57 MER-IS images from 2003 to 2009 which were pre-processed through geometric correction,atmospheric correction,etc.At last,a series of maps about Chlorophyll-a concentration distribution of Lake Dianchi were produced.The result showed that Chlorophyll-a con-centration was rising slowly with a periodic fluctuation in Lake Dianchi.During a year,Chlorophyll-a concentration showed a de-creasing-increasing-decreasing pattern,where the minimum appeared in February and March,and the maximum occurred within September and November.Regarding to spatial distribution,Chlorophyll-a concentration was higher at the edge and the north of Lake Dianchi,which are close to the Kunming city and small towns.In addition,the higher Chlorophyll-a concentration was,the more obvious the spatial variation was.
Key words:  Chlorophyll-a  spatial-temporal variation  Lake Dianchi  MERIS data  three-band model
分享按钮