11 groundwater level observation logs are arranged in the transition zone from Heihe River to desert oasis in Pingchuan oasis, Linze. From May to July 2012-2013, the groundwater level is monitored three times a month, and the NO3-N content, Cl, SO42 - change are analyzed by sampling once a month.

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(2015). Groundwater quality in the downstream of the Heihe River Basin (2012-2013). A Big Earth Data Platform for Three Poles, DOI: 10.3972/heihe.300.2014.db. CSTR: 18406.11.heihe.300.2014.db. (Download the reference： RIS | Bibtex )

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