Absorption Characteristics and Environmental Significance of Dissolved Organic Matter in Lake Dongping
YAO Xin1,2, SUN Jiang-ling3, DONG Jie1, LIU Xue-li1, LIU Yu-ping1, FANG Xiao-xiao1
1. School of Environment and Planning, Liaocheng University, Liaocheng 252059, China 2. State Key Laboratory of Lake & Environment Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 3. Bureau of Hydrology and Water Resources Monitoring, Taihu Basin Management Bureau, Wuxi 214024, China
Abstract：As an important water source in Shandong Province, Lake Dongping is one of the most important inland lakes to South-to-North Water Diversion East Route Project. We tried to provide the basis for real-time monitoring of water quality mutation by using CDOM absorption characteristics. The average values of CDOM absorption coefficients [a(280)，a(350)，a(440)] were (12.90±1.17)，(3.11±0.40) and (0.65±0.09) m-1. a(440) had linear relationships with total nitrogen (p<0.01), total phosphorus (p<0.001), dissolved organic carbon (p<0.001), chemical oxygen demand (p<0.001), Chlorophyll a (p<0.001), which can be used to estimate the water quality parameters. The results showed that CDOM absorption coefficient reflects the nutritional status of Lake Dongping, which is close to eutrophication level. There was an obvious decrease of CDOM absorption coefficients from river mouth of Dawen River to lake center and then to the outlets of lake. This illustrated that terrestrial input is the main source of nutrients and pollutants in Lake Dongping.
姚 昕1,2，孙将凌3，董 杰1，刘学利1，刘玉萍1，房晓晓1 . 东平湖CDOM的光谱吸收特征及环境指示意义 [J]. 光谱学与光谱分析, 2016, 36(10): 3232-3236.
YAO Xin1,2, SUN Jiang-ling3, DONG Jie1, LIU Xue-li1, LIU Yu-ping1, FANG Xiao-xiao1 . Absorption Characteristics and Environmental Significance of Dissolved Organic Matter in Lake Dongping . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(10): 3232-3236.
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