青海湖湖水中磷的空间分布特征

Spatial and Temporal Dynamic Variation of Phosphorus in Water of Qinghai Lake

以青海湖湖水9个采样点135个水样为研究对象,分析了湖水总磷和可溶性磷的分布特征。结果表明:湖水总磷、可溶性磷浓度6月较高,其次是8月、9月;不同区域总磷浓度变化较大,其中沙柳河入湖湖区、布哈河入湖湖区、鸟岛浓度较大,不同区域可溶性磷浓度变化不大;同一采样点总磷浓度变化明显,其中151码头、江西沟、鸟岛、青海湖农场、沙岛、海晏湾6月的总磷浓度高于8月、9月的,黑马河入湖湖区、布哈河入湖湖区、沙柳河入湖湖区8月、9月的总磷浓度高于6月的;青海湖湖水中磷的分布与转化受湖水理化性质和雨季磷的外源输入影响较大。

135 samples from 9 sampling points of Qinghai Lake were used to measure the total phosphorus （TP） and soluble phosphorus （SP） concentration in the water body. The results show that the TP and SP concentration in June are higher than that in August and September. The TP concentration of different sites is different. The concentration of TP in Shaliu River, Buha River and Bird Island is significantly higher than that of other sites. The concentration of SP is no variation. The average TP concentrations in the same sites are vibrated highly, and the average TP concentrations in 151-View Spot, Jiangxi Channel, Bird Island, Qinghai Lake Farm, Sand Island and Haiyan Cove in June is higher than that in August and in September, and the average TP concentrations in Heima River, Buha River and Shaliu River in August and in September is higher than that in June. The phosphorus concentration of water in Qinghai Lake is influenced on the physical and chemical characters of water and external source import of phosphorus during the rainy season obviously.