海面漂浮绿潮生物量光谱特征及估算模型

发布时间：2018-04-21 01:16

  本文选题：光谱学 + 遥感　； 参考：《光学学报》2017年04期

【摘要】：海上漂浮绿潮生物量的估算对实现绿潮处置资源高效配置、提高应急处置效率具有重要意义。利用现场实验获取的漂浮绿潮单位面积生物量及其地物反射光谱数据,分析了漂浮绿潮光谱特征和多种光谱指数与单位面积生物量之间的响应关系,基于此构建并验证了漂浮绿潮生物量估算模型。结果显示漂浮绿潮近红外波段反射率与单位面积生物量之间存在强相关关系(相关系数R≈0.8);光谱指数以及960nm反射峰和1060nm吸收峰峰值与漂浮绿潮单位面积生物量显著相关(R0.7);基于R_(960)/R_(670)和R_(1060)/R_(670)(R_(670),R_(960),R_(1060)分别为670,960,1060nm处的反射率)构建的漂浮绿潮生物量指数估算模型具有较高的精度(R~2≈0.9,相对误差R_(PE)≈27%)。研究结果为利用遥感技术实现海面漂浮绿潮生物量估算提供了参考。
[Abstract]:The estimation of floating green tide biomass on the sea is of great significance to realize the efficient allocation of green tide resources and improve the efficiency of emergency disposal. The spectral characteristics of floating green tide and the response relationship between various spectral indices and biomass per unit area were analyzed by using the data of floatation green tide unit area biomass and its reflection spectrum obtained from field experiments. Based on this, a model for estimating the biomass of floating green tide was constructed and verified. The results show that there is a strong correlation between reflectivity and biomass per unit area in near infrared band of floating green tide (correlation coefficient R 鈮，

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