Using visible reflectance spectroscopy to reconstruct historical changes in chlorophyll a concentration in East Antarctic ponds
Using visible reflectance spectroscopy to reconstruct historical changes in chlorophyll a concentration in East Antarctic ponds
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使用可见反射光谱重建东南极池塘叶绿素a浓度的历史变化
DOI：
10.3402/polar.v32i0.19932
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发表时间：
2013-01
期刊：
影响因子：
1.9
通讯作者：
Liguang Sun
中科院分区：
文献类型：
--
作者：
Qianqian Chen;Xiaodong Liu;Yaguang Nie;Liguang Sun
The visible reflectance spectroscopy (VRS) and chlorophyll a concentration were determined in three sediment profiles collected from East Antarctica to investigate the potential application of VRS in reconstructing historical changes in Antarctic lake primary productivity. The results showed that the appearance of a trough at 650–700 nm is an important marker for chlorophyll a concentration and can therefore be used to distinguish the sedimentary organic matter source from guano and algae. The measured chlorophyll a content had significant positive correlations with the trough area between 650 and 700 nm, and no distinct trough was found in the sediments with organic matter completely derived from guano. Modelling results showed that the spectra spectrally inferred chlorophyll a content, and the measured data exhibit consistent trends with depth, showing that the dimensionless trough area can serve as an independent proxy for reconstructing historical fluctuations in the primary production of Antarctic ponds. The correlation of phosphorus (P) with measured and inferred chlorophyll a contents in ornithogenic sediments near penguin colonies indicates that the change in primary productivity in the Antarctic ponds investigated was closely related to the amount of guano input from these birds.
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影响因子：
2.1
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
11.4
作者：
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影响因子：
2.6
作者：
P. Broady
通讯作者：
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影响因子：
8.8
作者：
Xiao-dong Liu;San-ping Zhao;Liguang Sun;Xue-bin Yin;Z. Xie;Honghao Luo;Yuhong Wang
通讯作者：
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