Fluorescence Characteristics of Different Chlorophyll a Concentration in Lake Taihu
LI Li1, YIN Qiu1,2, GONG Cai-lan3, XU Hua1, CHEN Li-xiong3
1. Institute of Remote Sensing Applications of Chinese Academy of Sciences, Beijing 100101, China 2. Shanghai Center for Satellite Remote-Sensing and Application, Shanghai 201100, China 3. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
Abstract：The spectral reflectance and water qualities of 27 stations were acquired in the lake Taihu during the months from May to August, 2008 when blue algal bloomed. Based on the fluorescence characteristics analysis of different chlorophyll a concentration, it was obvious that the position and height of fluorescence peak both have a positive correlation with chlorophyll a concentration, and the correlation coefficients between chlorophyll a concentration and position and half width of fluorescence peak are larger than those of the reference baseline and the normalized height of fluorescence. Estimating of chlorophyll a concentration in case 2 water using fluorescence characteristics is obviously better than the empirical algorithm based on blue to green ratio. Moreover, the common algorithm based on near infrared band to red band ratio is essentially consistent with the normalized height method.
Key words：Flourescence characteristics;Chlorophyll a concentration;Lake Taihu;Spectral ratio
李 莉1，尹 球1，2，巩彩兰3，许 华1，陈利雄3 . 太湖不同叶绿素a浓度水体荧光特征分析[J]. 光谱学与光谱分析, 2011, 31(01): 136-140.
LI Li1, YIN Qiu1,2, GONG Cai-lan3, XU Hua1, CHEN Li-xiong3 . Fluorescence Characteristics of Different Chlorophyll a Concentration in Lake Taihu . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(01): 136-140.
