Dataset of dissolved nitrogen concentrations in stream water at Mt. Dongling, Beijing, in 2024

The research area is located at the Donglingshan Forest Ecosystem Positioning Research Station in Mentougou District, Beijing, with a regional range of 115 ° 20 ′ -115 ° 35 ′ E and 39 ° 48 ′ -40 ° 00 ′ N. Sheet1 of the Excel file is a valid data table, containing 41 sampling date records and 15 fields, with each row representing an observation result for a sampling date.

The data mainly covers 39 records from January 6th to November 23rd, 2024; In addition, it includes two historical observation records from July 13th and July 21st, 2019, which need to be distinguished from the 2024 data. The overall time resolution of the data is on a weekly scale, but due to sampling conditions and the integrity of auxiliary observation data, the time interval between some adjacent dates is not strictly 7 days. The meaning of each column in the data table is as follows: "Date" refers to the date of sample collection, in the format of year month day; 'Flow' refers to the flow rate of the stream during sampling, measured in L s ⁻¹;; 'FNO ∝⁻', 'FTDN', and 'FDON' are the weekly output fluxes per unit area of NO ∝⁻⁻ - N, TDN, and DON, measured in kg N ha ⁻¹ week ⁻¹;; 'DON', 'TDN', and 'NO ∝⁻' are the concentrations of DON, TDN, and NO ∝⁻ - N in the stream, measured in mg N L ⁻¹;;; 'K ⁺' Ca ² ⁺ "" Mg ² ⁺ "" SO ₄ ² ⁻ "and" Cl ⁻ "are the main cation and anion concentrations in the stream water, measured in mg L ⁻ ¹;;" BP "is the cumulative precipitation during the corresponding sampling interval, measured in mm;" temp "is the stream water temperature corresponding to the sampling date, measured in ℃. There are no missing concentrations of DON, TDN, and NO ∝⁻ in the 41 records.