青海湖2015年水质参数特征及其变化

Journal of Water Resources Research 水资源研究, 2018, 7(1), 74-83

Published Online February 2018 in Hans. /journal/jwrr

https:///10.12677/jwrr.2018.71009

Characteristics and Changes of Water Quality Parameters of Qinghai Lake in 2015

Rongxin Bi1, Hucai Zhang1*, Huayong Li1, Fengqin Chang1, Lizeng Duan1, Yubang He2, Hu Zhang1, Xinyu Wen1, Yu Zhou1

1Yunnan Provincial Key Laboratory of Geographical Process and Environmental Change on the Plateau, Key Laboratory of Plateau Lake Ecology & Global Change, College of Tourism and Geography Science, Yunnan Normal University, Kunming Yunnan

2Qinghai Lake National Nature Reserve Bureau, Xining Qinghai

Received: Nov. 21st, 2017; accepted: Dec. 1st, 2017; published: Dec. 8th, 2017

Abstract

The water temperature, dissolved oxygen, pH, chlorophyll-a concentration and turbidity vertical profile monitoring were carried out at Qinghai Lake during September 22-24, 2015. At the same time, physical and chemical status of Qinghai Lake and lake nutrition status were analyzed by the experimental deter-mination of total phosphorus and total nitrogen content,and nutrient salt determination through collect-ing water samples, compared with the data from Qinghai Lake Management Bureau. The results showed that there were some differences in physical and chemical parameters and nutritional degree of each point, and due to wind and lake disturbance, there is a weak stratification phenomenon at the center of the lake; the dissolved oxygen concentration at the center of lake is lower, and the dissolved oxygen stra-tification is affected by the temperature stratification; Qinghai Lake’s high salinity and high hydronium concentration control its pH and have a greater impact on the dissolved oxygen concentration and turbid-ity. The release of sediment caused by temperature and lake water circulation makes phytoplankton con-centrate in the middle and low water, so that submerged plants have better growth conditions. The nu-trient level of Qinghai Lake is not high, but the concentration of total phosphorus has a tendency to in-crease. Exogenous input is the main reason that affects the degree of lake nutrition. The intensification of human activities makes the Qinghai Lake have the danger of deterioration of water quality.

Keywords

Qinghai Lake, Water Temperature, Dissolved Oxygen, pH, Chlorophyll a, Nutritional Degree,

Human Activities

青海湖2015年水质参数特征及其变化

毕荣鑫1，张虎才1*，李华勇1，常凤琴1，段立曾1，何玉邦2，张虎1，文新宇1，周瑜1

作者简介：毕荣鑫(1992-)，男，在读硕士研究生，主要从事湖泊沉积与环境变化研究。

*通讯作者。