Yue, F-J.; Waldron, S.; Oliver, D.; Ding, H.

Hydrochemistry and nitrate sensor data from three karst sites in SW China, 2016-2017

The dataset contains hydrochemistry (temperature, specific conductivity, pH, dissolved oxygen) and nitrate-N in the Houzhai catchment (Southwestern, China). Three karst springs were investigated. Data were obtained via sensor approach with 15mins time interval between May 2016 to October 2017.

Publication date: 2020-07-16

Get the data

This dataset is available under the terms of the Open Government Licence

Format of the data: Comma-separated values (CSV)

You must cite: Yue, F-J.; Waldron, S.; Oliver, D.; Ding, H. (2020). Hydrochemistry and nitrate sensor data from three karst sites in SW China, 2016-2017. NERC Environmental Information Data Centre. https://doi.org/10.5285/f70596a1-0994-4b08-abab-0c9398af447d


© Natural Environment Research Council

© Tianjin University, China

© University of Glasgow, UK

© University of Stirling, UK

© National Natural Science Foundation, China


Study area
Temporal extent
2016-05-01    to    2017-10-31

Provenance & quality

The pH sonde was calibrated every month by trained operators following standard operating procedures. For nitrate-N sensor calibration, discrete stream water samples for validation were collected manually at weekly or biweekly intervals, with additional samples collected during precipitation event periods using autosamplers at sampling intervals of one to four hours.
Statistical relationships between the sensor-estimated [NO3−–N] and the laboratory measured [NO3−–N] were generated. To evaluate this calibration processes, the uncertainty (μC) of shorter monitoring period calibration and one single calibration for whole monitoring period at each site was compared. Finally, shorter monitoring period calibration was used for all sensor data.


Yue, F.-J., et al. (2019). Land use interacts with changes in catchment hydrology to generate chronic nitrate pollution in karst waters and strong seasonality in excess nitrate export. Science of the Total Environment 696: 134062. https://doi.org/10.1016/j.scitotenv.2019.134062

Correspondence/contact details

Yue, F-J.
Tianjin University


Yue, F-J.
Tianjin University
Waldron, S.
University of Glasgow
Oliver, D.
University of Stirling
Ding, H.
Tianjin University

Other contacts

NERC EDS Environmental Information Data Centre
NERC Environmental Information Data Centre

Additional metadata

Topic categories
Houzhai,  Hydrochemistry,  Nitrate,  Sensor
Natural Environment Research Council Award: NE/N007425/1
Spatial representation type
Tabular (text)
Spatial reference system
WGS 84 / Pseudo-Mercator
Last updated
18 May 2022 12:37