Water quality in the Tibetan Plateau: Metal contents of four selected rivers

2008 ◽  
Vol 156 (2) ◽  
pp. 270-277 ◽  
Author(s):  
Xiang Huang ◽  
Mika Sillanpää ◽  
Bu Duo ◽  
Egil T. Gjessing
Keyword(s):  
Water Quality ◽  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Metal Contents

Water quality in the Tibetan Plateau: Major ions and trace elements in the headwaters of four major Asian rivers

2009 ◽  
Vol 407 (24) ◽  
pp. 6242-6254 ◽  
Author(s):  
Xiang Huang ◽  
Mika Sillanpää ◽  
Egil T. Gjessing ◽  
Rolf D. Vogt
Keyword(s):  
Water Quality ◽  
Trace Elements ◽  
Tibetan Plateau ◽  
Major Ions ◽  
The Tibetan Plateau

scholarly journals Drinking water quality in the alpine pastures of the eastern Tibetan plateau

Rangifer ◽  
2004 ◽  
pp. 47-52 ◽  
Author(s):  
Mika Sillanpää ◽  
Riina-Maarit Hulkkonen ◽  
Angela Manderscheid
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Tibetan Plateau ◽  
Water Source ◽  
Water Sources ◽  
The Tibetan Plateau ◽  
Quality Factors ◽  
Guideline Values ◽  
Result Analysis ◽  
Water Quality And Quantity

The need for water quality research on the Tibetan plateau has arisen after the rangeland was allocated and leased as pasture grounds to individual nomadic families in the 1990s. These policies changed the access to water sources. The imposed fencing of the pasture tenures makes the situation even more delicate. Nomadic families are now obliged to use only water sources existing on their own site. The restrictions have caused the urge to use all available water, which resulted in increasing water quality and quantity problems. In the past, natural water sources were in common use. During the Collective era, machine-dug wells near the collective settlements facilitated the procurement of drinking water. Based on recent investigations in Dzoge county (Sichuan province), the nomadic families of some regions considered the availability of adequate drinking water for humans and animals as their biggest problem. For this study, eight water samples were collected from the Dzoge county area. All samples were from different kinds of sources, but all in continuous use by humans and animals. The samples were analyzed for typical potable water quality factors (hygienic and technique-aesthetic). The results show that the Chinese national guideline values were exceeded for NO4-N and PO4-P in most open sampling locations. Those parameters do not spoil the water by themselves, but together with suspended solids and organic materials produce a great environment for bacteria like E. coli and fecal streptococci to grow. The result analysis and pictures seen from the location reveal that bacterial growth may be the biggest problem in water quality. Even primitive protection around the water source (i.e. concrete rings, wooden barriers around edges, covers) seem to have a great impact on water quality.

scholarly journals Assessment of Heavy Metal Contents in Surface Soil in the Lhasa–Shigatse–Nam Co Area of the Tibetan Plateau, China

2014 ◽  
Vol 93 (2) ◽  
pp. 192-198 ◽  
Author(s):  
Huiting Xie ◽  
Ji Li ◽  
Chengzhong Zhang ◽  
Zhenyu Tian ◽  
Xin Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Tibetan Plateau ◽  
Surface Soil ◽  
The Tibetan Plateau ◽  
Nam Co ◽  
Metal Contents

scholarly journals Composition, mineralization potential and release risk of nitrogen in the sediments of Keluke Lake, a Tibetan Plateau freshwater lake in China

2018 ◽  
Vol 5 (9) ◽  
pp. 180612 ◽  
Author(s):  
W. W. Wang ◽  
X. Jiang ◽  
B. H. Zheng ◽  
J. Y. Chen ◽  
L. Zhao ◽  
...  
Keyword(s):  
Water Quality ◽  
Tibetan Plateau ◽  
Global Climate ◽  
Diffusion Flux ◽  
Ammonia Nitrogen ◽  
The Tibetan Plateau ◽  
Nitrogen Release ◽  
Freshwater Lakes ◽  
Mineralization Potential ◽  
Release Flux

The lakes distributed in the Tibetan Plateau constitute a lake group with the highest altitude, largest lakes and largest area in the world and are important in global climate and environmental effects. Freshwater lakes in the Tibetan Plateau possess high ecological values and high vulnerability. The migration and transformation of nitrogen in sediments are critical to lake ecosystems, but information on sedimentary nitrogen in the freshwater lakes in the Tibetan Plateau is limited. A case study was conducted in Keluke Lake, China, to reveal the effects of sedimentary nitrogen on water quality in plateau freshwater lakes. Nitrogen speciation, mineralization potential and release flux were analysed through a sequential extraction method, waterlogged incubation experiment and Fick's first diffusion law, respectively. The content of total nitrogen (TN) was 1295.75–6151.69 mg kg −1 , and 94.2% of TN was organic nitrogen (ON). The contents of three nitrogen fractions were in the order of hydrolysable nitrogen > residual nitrogen > exchangeable nitrogen. Ammonia nitrogen ( N H 4 + − N ) was the main mineralization product, and hydrolysable ON was the most significant contributor. The sediments showed a great mineralization potential, with a potentially mineralizable nitrogen value of 408.76 mg N kg −1 of sediment, that was mainly affected by hydrolysable ammonium nitrogen. The N H 4 + − N diffusion flux ranged from 24.14 to 148.75 mg m −2 d −1 , and the sediments served as an internal nitrogen source. Nitrogen release from sediments was considerably influenced by exchangeable ammonia nitrogen. The sediments in Keluke Lake pose a potential nitrogen release risk and threaten the water quality of the lake. The total content, speciation, mineralization of ON and the release flux at sediment–water interface should be considered comprehensively to evaluate the effects of nitrogen in sediments to water quality.

Hydrochemical characteristics and water quality assessment of surface water in the northeast Tibetan Plateau of China

2017 ◽  
Vol 18 (5) ◽  
pp. 1757-1768 ◽  
Author(s):  
Qian Zhang ◽  
Shengli Wang ◽  
Muhammad Yousaf ◽  
Shuixian Wang ◽  
Zhongren Nan ◽  
...  
Keyword(s):  
Water Quality ◽  
Health Status ◽  
Surface Water ◽  
Tibetan Plateau ◽  
Good Condition ◽  
Oxygen Demand ◽  
Fuzzy Comprehensive Evaluation ◽  
Ammonia Nitrogen ◽  
Entire Body ◽  
The Tibetan Plateau

Abstract The Tibetan Plateau is very important as it provides water resources for about 40% of the world's population and the runoff-yield area of the Yellow rivers. In this paper, the water quality in Xiahe County, located in the northeast Tibetan Plateau, was investigated. Six parameters (chloride, chemical oxygen demand, ammonia nitrogen, nitrate, fluoride, sulfate) were selected to assess the quality and health status of surface water in Xiahe County. The main types of hydrochemical in the surface water were considered to be Mg2+-Ca2+-HCO3−-Cl− and Mg2+-Ca2+-HCO3−. The cations and anions were mainly from weathering and dissolution of carbonate rock. Fuzzy comprehensive evaluation (FCE) results showed that the water quality in all 69 sampling sites was all class I. The integrated health status was higher than 0.95 and the health rate was 100%. Although ammonia nitrogen was recognized as the main contaminant, it had little effect on the entire body of water. Overall, the surface water qualities of most samples in Xiahe County were found to be in good condition.

scholarly journals In-situ water quality investigation of the lakes on the tibetan plateau

2021 ◽  
Author(s):  
Chong Liu ◽  
Liping Zhu ◽  
Junbo Wang ◽  
Jianting Ju ◽  
Qingfeng Ma ◽  
...  
Keyword(s):  
Water Quality ◽  
Tibetan Plateau ◽  
The Tibetan Plateau
Sign in / Sign up

Export Citation Format

Share Document