Data Description:
The dataset includes five-year dissolved organic carbon (DOC) concentrations and fluxes leached from both of organic and mineral layers under three nitrogen addition treatments (ambient treatment, 8 kg N/ha/yr addition and 40 kg N/ha/yr addition treatments, respectively) in a field experiment of Gongga montane forest (29°34′N, 101°0′E) (Figure 1). DOC leachate was collected using zero-tension tray lysimeters (32 cm in diameter) with a frequency of weekly from late March to late December and biweekly during the remaining time from 2014 to 2018. The concentrations and the specific UV absorbance at 285 nm of leachate DOC were analyzed using a liquid CN analyzer (Vario TOC, Elementar, Germany) and a UV-Vis Spectrophotometer (UNICO, Shanghai, China), respectively.
DOC leaching is one of the two primary pathways to soil C losses, and these data of DOC leaching with a high time resolution in situ could be important to assess the changes in soil C and to understand the underlying mechanisms.
Observation location:
Alpine Ecosystem Observation and Experiment Station of Mt. Gongga, 29°34′N, 101°0′E
Nitrogen addition experiment and leachate collection setup in a montane forest of Mt. Gongga
Keywords:
dissolved organic carbon; nitrogen deposition; biodegradability of DOC; montane forest
Funding information :
1. National Natural Science Foundation of China (Grant No.41977398)
2. The Youth Innovation Promotion Association CAS, China (Grant No.2018406)
Data availablity:
The dataset is available for download.
Contact information:
Ruiying Chang (changruiying@imde.ac.cn)
Institute of Mountain Hazards and Environment, Chinese Academy of Sciences
4-9, Renmin South Road, Chengdu, China.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended data citation:
Chang Ruiying. 2022. Dissolved organic carbon leaching data in a montane forest from 2014 to 2018. Mountain Science Data Center,DOI:10.12380/Ecosy.msdc.000003.(Reference：RIS)
Recommended article citation:
Wang T., J. Ao, X. Liu, et al. Simultaneous Measurements of Dissolved Organic Carbon and Soil Respiration Reveal Reduced Soil Carbon Loss Under Nitrogen Addition in a Montane Forest. Journal of Geophysical Research: Biogeosciences, 2022, 127: e2022JG006829.(Reference：RIS)
Acknowledge:
The dataset is provided by Mountain Science Data Center, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences
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| DOC experimental data |