的发生,迁移,改造,沉积物(SOM)和悬浮颗粒(SPOM)有机物的稳定性对碳的环境行为有重要影响,氮,磷,和水环境中的其他污染物。内容,composition,荧光特性,来源,呼伦湖SOM和SPOM的稳定性,中国寒冷干旱地区的典型湖泊,通过顺序提取进行比较,三维荧光光谱,平行因子技术,碳氮比,和稳定的碳同位素.北部和西部的SOM和SPOM含量高于东部和南部。SPOM的平均含量(24.70±4.63g/kg)略高于SOM的平均含量(23.04±10.27g/kg),但差异不显著。胡敏是SOM和SPOM的主要成分,占73.7%和61.2%,分别。腐殖质是SOM和SPOM中水可萃取有机物的主要荧光成分,分别占79.9%和70.4%,分别,总荧光强度。SOM和SPOM来自陆源,相对贡献率约为70%。SPOM受本地来源的影响更大,并且腐殖质程度和稳定性明显低于SOM。气候变化对移民的影响,改造,稳定性,未来应关注寒冷干旱区湖泊中与有机物密切相关的有机物和内源性污染物的生物有效性。
The occurrence, migration, transformation, and stability of sediment (SOM) and suspended particulate (SPOM) organic matters have important effects on the environmental behaviors of carbon, nitrogen, phosphorus, and other pollutants in a water environment. The content, composition, fluorescence characteristics, source, and stability of SOM and SPOM in Hulun Lake, a typical lake in cold and arid region of China, were compared by sequential extraction, three-dimensional fluorescence spectroscopy, parallel factor technique, carbon-nitrogen ratio, and stable carbon isotope. Contents of SOM and SPOM in north and west were higher than those in east and south. The average content of SPOM (24.70 ± 4.63 g/kg) was slightly higher than that of SOM (23.04 ± 10.27 g/kg), but the difference was not significant. Humin was the dominant component in SOM and SPOM, accounting for 73.7% and 61.2%, respectively. Humus was the main fluorescence component of water-extractable organic matter in SOM and SPOM, accounting for 79.9% and 70.4%, respectively, of the total fluorescence intensity. SOM and SPOM were derived from terrestrial sources with a relative contribution rate of about 70%. SPOM was more influenced by autochthonous sources and had a significantly lower humification degree and stability than SOM. Effects of climate changes on migration, transformation, stability, and bioavailability of organic matters and endogenous pollutants closely related to organic matters in lakes of cold and arid regions should be paid attention in the future.