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长江中下游4个湖泊非色素颗粒物吸收系数光谱模型

时志强 张运林 殷燕 刘笑菡

时志强, 张运林, 殷燕, 刘笑菡. 长江中下游4个湖泊非色素颗粒物吸收系数光谱模型[J]. 环境科学研究, 2012, 25(7): 757-763.
引用本文: 时志强, 张运林, 殷燕, 刘笑菡. 长江中下游4个湖泊非色素颗粒物吸收系数光谱模型[J]. 环境科学研究, 2012, 25(7): 757-763.
SHI Zhi-qiang, ZHANG Yun-lin, YIN Yan, LIU Xiao-han. Spectral Absorption Models of Tripton in Four Lakes in the Middle and Lower Reaches of the Yangtze River[J]. Research of Environmental Sciences, 2012, 25(7): 757-763.
Citation: SHI Zhi-qiang, ZHANG Yun-lin, YIN Yan, LIU Xiao-han. Spectral Absorption Models of Tripton in Four Lakes in the Middle and Lower Reaches of the Yangtze River[J]. Research of Environmental Sciences, 2012, 25(7): 757-763.

长江中下游4个湖泊非色素颗粒物吸收系数光谱模型

基金项目: 中国科学院知识创新工程项目(KZCX2-YW-QN312);国家自然科学基金项目(40971252);国家水体污染控制与治理科技重大专项(2012ZX07101-010)

Spectral Absorption Models of Tripton in Four Lakes in the Middle and Lower Reaches of the Yangtze River

  • 摘要: 利用指数模型和幂函数模型对2007年和2010年长江中下游4个湖泊58个样本 ad(λ)(非色素颗粒物吸收系数) 光谱进行拟合,以 R2(决定系数)、RE(相对误差)和RMSE(均方根误差)等统计参数判定模型效果. 指数模型和幂函数模型 R2平均值、RE、RMSE分别为0.998、7.01%、0.015 m-1和0.994、15.90%、0.027 m-1. 统计检验显示,指数模型的 R2显著大于幂函数模型(ANOVA,P<0.001),而RE和RMSE则显著小于幂函数模型(ANOVA,P<0.001). 指数模型能更准确地拟合 ad(λ),得到的 Sd(光谱斜率)平均值为(12.21±1.08)μm-1,400~700 nm波段内变异系数为8.85%,空间上4个湖泊之间变化不是很明显,仅傀儡湖的 Sd略低于其他3个湖泊. ad(λ)与ρ(ISM)(无机悬浮颗粒物浓度)呈极显著正相关,通过ρ(ISM)可以得到长江中下游典型浅水湖泊 ad(λ)光谱模型.

     

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出版历程
  • 收稿日期:  2011-10-07
  • 修回日期:  2012-01-10
  • 刊出日期:  2012-07-25

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