In the summer of 2020, the water samples from 26 lakes were collected mainly in the southern and eastern Tibetan Plateau. At the same time, the water samples from 3 lakes in the Hoh Xil region were collected from October to November 2020. Put the collected lake water samples into plastic bottles. Some samples are titrated on-site with an alkalinity kit to obtain the concentration of CO32- and HCO3- ions. The rest samples are stored in the refrigerator. After they are brought back to the laboratory, the concentration of main cations K+, Na+, Ca2+, Mg2+ is tested by ICP-OES, and the concentration of HNO -, SO42-, F- and Cl- ions are meastured by anion chromatography.
MENG Xianqiang
This data set comes from the book "natural geography and natural resources in the Namjagbarwa peak area", which is directed by Ren Meie, edited by Peng Buzhuo and Yang Yichou, and directed by the Institute of geography, Chinese Academy of Sciences. This book is one of the "mountaineering scientific investigation series" of Namjagbarwa peak. It is a comprehensive summary of the natural geographical research on Namjagbarwa peak and the great bend in the lower reaches of the Yarlung Zangbo River, which is a blank area in science. Since the rivers in Nanfeng area are mostly turbulent, the evaporation and concentration effect is weak. In addition, in the humid Nanfeng area, the soil developed on gneiss is widely distributed, with strong leaching, poor soluble salt in the soil, and more acidic reaction. In order to analyze the contents of some anions and cations in natural water, some anions in different types of soils developed on gneiss parent materials at different altitudes in Nanfeng area were measured, and the results are listed in Table 3. The content and distribution of elements in the soil are not only affected by the parent material of soil formation, but also related to the properties of organic matter and physical and chemical composition in the soil. Now the content of elements and physical and chemical composition of some soils developed in this area are listed in Table 8. It can be seen from table 8 that some elements are related to physical and chemical compositions such as organic matter and particle size. Nanfeng area has abundant rainfall, large plant coverage, and enhanced biological and chemical effects. There is a clear relationship between the accumulation of soil organic matter and the formation of clay particles and its height, that is, the lower the altitude, the stronger the biological and chemical weathering. At the same time, compared with Mount Everest, chemical weathering is also enhanced, which is the main reason why the content of other elements in the soil in this area is close to that of the world except Na, Mg and K. The content of elements in soil is closely related to soil forming parent material and soil type. Now, the measured values of elements in main soil types and soil forming parent material are taken as the arithmetic mean, and the standard deviation is calculated, which is listed in Table 9. It can be seen from table 9 that there are certain differences in the content of elements in soils developed from different parent materials, and there are also considerable differences in the content of elements in different types of soils. It shows that the content of elements in soil is closely related to the parent material and soil type. This is mainly related to the chemical properties of the elements themselves and the geochemical properties of the elements in the process of soil formation. The atmospheric aerosol samples of No. camp, base camp and Pai District in Nanfeng area were analyzed by PI Xe method. The measured values are listed in table 10 to explore the laws of transportation, diffusion, transformation and enrichment, carry out the research on the atmospheric background value in the clean area as soon as possible, and track the source of pollutants. Organic chlorinated compounds such as DDT, 666, PCB, due to their stable properties, can be affected by various natural factors in the environment and migrate for a long distance. In order to understand whether Nanfeng area is also polluted by this kind of organic chlorinated compounds, we used trace analysis method for the first time to analyze the content of organic chlorinated compounds in water, soil, animals and plants and other samples, so as to understand the biological background of Nanfeng area (tables 11, 12, 13), The content of DDT and 666 in water, soil, some plants and poultry eggs in Nanfeng area is very low, generally only 10-8 order of magnitude. No abnormality was found in the content levels of other elements in human hair and cattle hair samples collected. The contents of inorganic substances in some biological samples from Nanfeng and Beijing are listed in table 14.
PENG Buzhuo, YANG Yichou
To explore inorganic hydrochemical characteristics of the upper Yarlung Zangbo River, water samples were collected from the main stream and different tributaries in this region in August 2020. The water was collected with 100mL polyethylene (PE) plastic bottle, and the basic physical and chemical parameters such as pH value (±0.2) and dissolved oxygen (±1%) of the sampling site were measured by multi -parameter water quality monitor (YSI-EX02,USA).,and HCO3- concentration was titrated with 0.025mol/L HCl.The concentrations of Na+, K+, Ca2+, Mg2+, SO42-, NO3- and Cl- ions were analyzed and determined by ion chromatograph (Shenhan CIC-D160, China) in the laboratory. Using Gibbs model, correlation analysis and principal component analysis method, analyzed the one main ion concentration changes, chemical composition characteristics, analytical, and the ion source was designed to reveal inorganic water chemical characteristics of The Tibet plateau glacier melt water runoff, and for plateau typical river water and changing trend forecast provides the basis.
NIU Fengxia
In order to explore the inorganic hydrochemical characteristics of Naqu basin, river water and groundwater were collected in Naqu basin in September 2020 and September 2021. Collect river water and groundwater with 550ml plastic bottles on site. The main anions and anions (ca2+, na+, mg2+, k+, so42- and cl-) are measured with an ion chromatograph (metrohm ecoic, Switzerland), with a measurement accuracy of 1 μ G/l. Bicarbonate (hco3-) is titrated with acid-base indicator and determined with 50ml acid burette. The purpose is to reveal the inorganic hydrochemical characteristics of water bodies in Naqu basin and provide data support for the analysis of groundwater recharge sources in Naqu basin.
LIU Yaping , CHEN Zhenghao
This dataset provides the in-situ lake water parameters of 124 closed lakes with a total lake area of 24,570 km2, occupying 53% of the total lake area of the TP.These in-situ water quality parameters include water temperature, salinity, pH,chlorophyll-a concentration, blue-green algae (BGA) concentration, turbidity, dissolved oxygen (DO), fluorescent dissolved organic matter (fDOM), and water clarity of Secchi Depth (SD).
ZHU Liping
Lake salinity is an important parameter of lake water environment, an important embodiment of water resources, and an important part of climate change research. This data is based on the measured salinity data of lakes in the Qinghai Tibet Plateau. The salinity is characterized by the practical salinity unit (PSU), which is converted from the specific conductivity (SPC) measured by the conductivity sensor. ArcGIS software was used to convert the measured data into space vector format. SHP format, and the measured salinity spatial distribution data file was obtained. The data can be used as the basic data of lake environment, hydrology, water ecology, water resources and other related research reference.
ZHU Liping
The data set records the water quality evaluation results of the monitoring sections of the Yangtze River, Yellow River and Huangshui (2010-2012). The data is collected from Yushu ecological environment bureau. The data set contains 18 files, which are: water quality assessment of national control section of Yangtze River in April 2010, water quality assessment of national control section of Yangtze River in May 2010, water quality assessment of national control section of Yangtze River in September 2010, water quality assessment of national control section of Yangtze River in October 2010, etc. the data table structure is the same. There are seven fields in each data table Field 1: monitoring section Field 2: classification of water environment functional areas Field 3: water quality category Field 4: main pollution indicators Field 5: water quality status Field 6: water quality last month Field 7: water quality in the same period of last year
Ecological Environment Bureau of Yushu Prefecture
This data set contains total suspended particulate matter absorption AP; Algal particles absorb APH; Non pigment particles absorb ad. The total suspended particulate matter absorption data is the sum of organic and inorganic particulate matter absorption. The absorption of particles is measured by integrating sphere and calculated by projection and reflection method. The measurement range is 350-800 nm. The absorption value has been converted. The point data includes English code, Chinese specific corresponding lake name and longitude and latitude data. The above data has been repeatedly verified by scientific researchers, which is true, effective and highly available. It can be directly combined with remote sensing inversion of lake water color as Inversion Modeling and verification data set to calculate the long-term evolution law of lake water quality in Tibet.
ZHOU Yongqiang
1) Data content: the data set mainly includes the typical water quality parameters of some lakes and river sections in Tibet (TN: total nitrogen; TN: total nitrogen); TP: total phosphorus; Cod: chemical oxygen demand; TOC: total organic carbon); 2) Data sources and processing methods: the water samples collected in the field are sealed, shaded, frozen and stored, and sent to the national heavy industry laboratory for indoor experimental analysis and detection within the effective time; 3) Data quality description: the water sample is sealed completely within the storage time, and the shading treatment is good, and the detection is completed by professional laboratory personnel within the effective time; 4) Results and prospects of data application: at present, there are few measured data about lakes in Tibet. Most of the lakes included in this data set are above 4000 meters above sea level. Therefore, this data set has great reference value for the future study of lake water quality in Tibet.
SONG Chunqiao
In the summer of 2019, 22 lake water samples were collected in selinco area of Nam Co, Tibet. They were put into plastic bottles. Some samples were titrated on site by alkalinity kit to obtain the concentrations of CO32 - and HCO3 - ions. The rest samples were stored in the refrigerator. After they were brought back to the laboratory, the concentrations of main cations K +, Na +, Ca2 +, Mg2 + were measured by ICP-OES, The concentrations of HNO3 -, SO42 -, F - and Cl - were measured by anion chromatography. The results showed that the highest concentration of Ca2 + in 22 lakes was 34.8ppm in yueqiaco, and the lowest was 1.8ppm in zhangnaicuo, with an average of 11.9ppm. The highest K + ion concentration was 745.6ppm, the lowest was 1.0ppm, the average was 270.9ppm. The highest concentration of Mg2 + was 1632.8ppm in Jiangcuo, and the lowest was 2.5ppm in mudadaryuco, with an average of 180.1ppm. The highest concentration of Na1 + is 5446.0ppm of daze Cuo, and the lowest is 13.8ppm of Mu Cuo, with an average of 1675.3ppm. The highest F-ion concentration was 0.3 mmol / L, the lowest was 0.1 mmol / L, and the average was 0.1 mmol / L. The highest concentration of Cl - was 73.0 mmol / L, the lowest was 0.4 mmol / L, and the average was 19.0 mmol / L. The highest concentration of NO3 - was 0.2 mmol / L, the lowest was 0.1 mmol / L, and the average was 0.2 mmol / L. The highest concentration of S042 - was 219.3 mmol / L, the lowest was 0.1 mmol / L, and the average was 33.3 mmol / L. The highest concentration of CO32 - was 54.0 mmol / L, the lowest was 0.0 mmol / L, and the average was 15.5 mmol / L. The highest concentration of HCO3 - was 50.7 mmol / L, the lowest was 2.0 mmol / L, and the average was 21.1 mmol / L.
MENG Xianqiang
The regional water environment data of typical mineral development projects include the water sample detection data set around the typical mineral development area of the super large gold belt in the Qilian Mountain metallogenic belt in the northeast of Qinghai Tibet Plateau (2019), and the sediment and soil sample detection data set around the typical mineral development area of the super large gold belt in the Qilian Mountain metallogenic belt in the northeast of Qinghai Tibet Plateau (2019). The first row of data is longitude and latitude and element name, the second row is element content unit, and the first column is sample point number. The data acquisition method is the water, sediment and soil samples collected in the relevant watersheds around Zaozigou gold mine, Dashui gold mine and Zhongqu tailings pond in Gannan Tibetan Autonomous Prefecture in August 2019. The water samples are detected and analyzed by ICAP sq inductively coupled plasma mass spectrometer and haiguang optical AFS-2202E atomic fluorescence spectrometer of American Thermal Power company, The soil and sediments are detected and analyzed by ieexrf fluorescence spectrometer, mainly analyzing the contents of major elements such as K, Ca and Na and trace elements such as Cr \ Ni \ Cu \ Zn. The data format is xlsx and the data quality is reliable. It can be used to evaluate the comprehensive effect of water environment in typical mineral development areas of super large gold belt in Qilian Mountain metallogenic belt in the northeast of Qinghai Tibet Plateau.
CHENG Hao
The study of chemical weathering is of great significance to understand how the plateau uplift regulates the mechanism of climate change and the circulation of elements and materials in the sphere. The data set is the seasonal major element concentration and stable isotope data of the river water at the hydrological station of the Yellow River Basin originating from the Qinghai Tibet Plateau. There are two hydrological stations in total: 1. Longmen hydrological station in the middle reaches of the Yellow River is the high-resolution (weekly) sample data collected in 2013, and the element concentrations include K, CA, Na, Mg, SO4, HCO3, Cl, etc. The cation data of collected water samples are tested on ICP-AES of Institute of earth environment, Chinese Academy of Sciences, and the anion data are tested on ion chromatograph (ics1200) of Nanjing Institute of geography and lakes, Chinese Academy of Sciences. The uncertainty is within 5%, and HCO3 is tested by titration. The high-resolution (weekly) Li isotope data of river water was tested in MC-ICP-MS of Institute of earth environment, Chinese Academy of Sciences in 2017, and the test accuracy 2sd is better than 5 ‰; 2. Tangnaihai hydrological station on the Yellow River is the river water (month by month) data set collected from July 2012 to June 2014. The major element concentrations include K, CA, Na, Mg, SO4, HCO3, Cl, etc., and the stable isotope data include s, O and H. The data set can be used to study the modern weathering process under the background of the uplift of the Qinghai Tibet Plateau, and provides the first-hand reliable data for the study of physical erosion and chemical weathering in the basin.
JIN Zhangdong, ZHAO Zhiqi
The dataset of water quality investigation in the urbanized area of Tibetan Plateau mainly includes the investigation data of water quality in the Huangshui River Basin and other key urban areas of Tibetan Plateau. The data were collected during July-August, 2020, by Hash DR900 water quality monitor. The datasets include the measured water quality of each reach of the Huangshui River, and the upstream and downstream of rivers that flow through major towns on the Tibetan Plateau. The main parameters include: total nitrogen, total phosphorus, ammonia nitrogen, chemical oxygen demand, dissolved oxygen content, pH, hardness, turbidity and chroma. To note, the chemical indexes (total nitrogen, total phosphorus, ammonia nitrogen, chemical oxygen demand) were determined in the laboratory after the scientific expedition, and the time interval between sample collection and water quality determination is too long to sustain the original content of ammonia nitrogen, thus the ammonia nitrogen of some water samples were not measured. In addition, due to the budget restriction, only water samples from the river outlet of towns on the plateau were allowed to measure the chemical indexes. Our dataset will support the study of optimizing the ecological security barrier system and validating ecohydrological models in the key urbanized areas of the Tibetan Plateau.
HE Chunyang, LIU Zhifeng, XIA Pei
Tibet Lalu Wetland National Nature Reserve, with a total area of 6.2 square kilometers and an average altitude of 3645 meters, is a typical wetland on the Qinghai Tibet Plateau, belonging to reed peat swamp. The data set includes the following water quality indicators: temperature, air pressure, dissolved oxygen, electrical conductivity, total soluble solids, pH, ORP, biochemical oxygen demand, chemical oxygen demand, total carbon content, total organic carbon content, total phosphorus content, available phosphorus content, total nitrogen content, The contents of ammonium nitrogen and nitrate nitrogen, etc; The data can be used in related scientific research such as soil quality evaluation of Lalu wetland.
YAN Zhongqing
From August to September in 2019, water samples of 24 lakes in selinco, Namco and their surrounding areas were collected for the second Qinghai Tibet scientific research. The chlorophyll (CHL, unit: ug / L), total nitrogen (TN, unit: mg / L), total phosphorus (TP, unit: mg / L), dissolved total nitrogen (DTN, unit: mg / L), dissolved total phosphorus (DTP, unit: mg / L), total phosphorus (TP, unit: mg / L), dissolved nitrogen (DTN, unit: mg / L) and dissolved phosphorus (DTP, unit: mg / L) were analyzed Nitrate nitrogen (NO3-N, mg / L), nitrite nitrogen (NO2-N, mg / L), ammonium nitrogen (NH4-N, mg / L) and phosphate (PO4-P, ug / L), total suspended particulates (TSS, mg / L), organic suspended particulates (OSS, mg / L), inorganic suspended particulates (ISS, mg / L), and so on, The unit is mg / L). At the same time, the name of the lake, the abbreviation of the lake and the longitude and latitude data of the point are provided, and the data format is xlsx. The data were analyzed by hand in the laboratory and verified repeatedly by scientific researchers.
ZHOU Yongqiang
This is the water quality multi-parameter data set of Mapam Yumco Lake during the River and Lake Source Investigation in 2017. It is used to acquire basic physical and chemical indices of lakes. And it can prepare for the following modern observation studies of lakes. The data observed time is from September 4, 2017 to September 7, 2017. It is measured by the YSI EXO2 multi-parameter water quality instrument. Instrument calibration is made before each measurement based on the altitude of the lake and the local pressure. The measuring interval is 0.25s. To ensure the data is frequently and continuously acquired, the instrument is slowly released. The original data includes data measured above the water surface, which is exposed to the air, and it has all been eliminated in the post processing. The data is stored as an excel file.
WANG Junbo
This is the water quality multi-parameter data set of Laangcuo Lake during the River and Lake Source Investigation in 2017. It can be used to acquire basic physical and chemical indices of lakes. And it can prepare for the following modern observation studies of lakes. The data is observed on September 8, 2017. It is measured by the YSI EXO2 multi-parameter water quality instrument. Instrument calibration is made before each measurement based on the altitude of the lake and the local pressure. The measuring interval is 0.25 s. To ensure the data is continuously acquired, the instrument is slowly released. The original data includes data measured above the water surface, which is exposed to the air, and it has all been eliminated in the post processing. The data is stored as an excel file.
WANG Junbo
The Land Surface Temperature in China STC dataset contains land surface temperature data for China (about 9.6 million square kilometers of land) during the period of 2003-2017, in Celsius, in monthly temporal and 5600 m spatial resolution. It is produced by combing MODIS daily data(MOD11C1 and MYD11C1), monthly data(MOD11C3 and MYD11C3) and meteorological station data to reconstruct real LST under cloud coverage in monthly LST images, and then a regression analysis model is constructed to further improve accuracy in six natural subregions with different climatic conditions.
WANG Xusheng, HU Xiaonong
This is the water quality data at depth of 2m, 15m, 18m, 28m, and 38m observed in Selincuo Lake from June to July, 2017. The data can be used in many fields, such as the physical and chemical properties of lakes and their climate response and lake environment changes.
WANG Junbo
The data set is the multi parameter data of water samples collected from the Lake Aral Sea basin in 2019, which is used to obtain the basic physical and chemical index data of the lake and prepare for the subsequent modern observation and research of the lake. The data observation time is July 26, 2019. The measuring instrument is YSI EXO2 water quality multi parameter measuring instrument. Before each measurement, the instrument is calibrated according to the altitude of the lake and the local air pressure. The measurement interval is set as 1s, and the delivery speed is slow, so as to ensure the high continuity of data acquisition. The original data obtained includes the measurement data exposed in the air above the water surface, which is eliminated in the later processing. The data is stored in Excel file.
WU Jinglu
Contact Support
Northwest Institute of Eco-Environment and Resources, CAS
0931-4967287
poles@itpcas.ac.cn
Links
National Tibetan Plateau Data CenterFollow Us
A Big Earth Data Platform for Three Poles © 2018-2020 No.05000491 | All Rights Reserved
｜ 
No.11010502040845
Tech Support: westdc.cn
