Guetlein, Adrian; Gerschlauer, Friederike; Kikoti, Imani; Kiese, Ralf (2020): Greenhouse gas parameterization experiment with samples from the Mt. Kilimanjaro [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.912463
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Published: 2020-02-24 • DOI registered: 2020-04-03
Abstract:
Soil core sampling in Tanzania was conducted during the dry season, in February 2011 and 2012. Here, one undisturbed soil core (12.5 cm inner diameter, 25 cm length) was collected at each of the 60 research plots. Cores were covered at the bottom and top with Parafilm M_ (Bemis Company, Inc. Oshkosh, WI, USA) lids to allow air exchange. They were shipped within a month to laboratory facilities at KIT, IMK-IFU, Germany, where they were kept air-dried at room temperature until further processing.Before being measured for GHG emissions (CO2, CH4, N2O), the soil cores were pre-incubated (Lovibond incubator ET 651-8, Tintometer GmbH, Germany) for 2 weeks at the site-specific mean annual temperature (MAT). They were watered with 4 mm of standard rain mixture equivalents after the first week and then again hr before the start of the measurement period (Breuer, Kiese, & Butterbach-Bahl, 2002). Each soil core was measured for GHG exchange once per week over a 5 week period (N = 5). During this time, moisture levels and temperature (_0.5°C) were kept stable. Measurements of CO2, CH4, and N2O concentration changes were monitored with a dual quantum cascade laser (Aerodyne Research Inc., Billerica, MA, USA, precision) at 1 Hz time intervals.To do so, soil cores were closed gas-tight with a lid (forming a headspace volume of 2 L). 50 ml/min of headspace air was then directed to the spectrometer and recirculated into the headspace volume over a 15 min time period. Mean ecosystem-specific GHG exchange rates were finally calculated from five replicated soil core measurements. As for the in situ GHG experiment, flux rates were calculated via the linear regression of concentration increases/decreases over time.
Related to:
Guetlein, Adrian; Gerschlauer, Friederike; Kikoti, Imani; Kiese, Ralf (2018): Impacts of climate and land use on N2O and CH4 fluxes from tropical ecosystems in the Mt. Kilimanjaro region, Tanzania. Global Change Biology, 24(3), 1239-1255, https://doi.org/10.1111/gcb.13944
Further details:
Hemp, Andreas: Detailed position of KiLi research plots [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.894721
Project(s):
Kilimanjaro Research Group (KiLi)
Funding:
Coverage:
Median Latitude: -3.211636 * Median Longitude: 37.415455 * South-bound Latitude: -3.390000 * West-bound Longitude: 37.240000 * North-bound Latitude: -3.050000 * East-bound Longitude: 37.680000
Event(s):
KiLi_fer0 * Latitude: -3.080000 * Longitude: 37.290000 * Location: Mount Kilimanjaro, Tanzania * Comment: POLETYPE: a middle pole; ECOSYTEM: forest Erica; COMMENTS: new focal plot for fer
Comment:
GHG parameterization is to investigate the influence of climate change (temperature and soil moisture) on soil greenhouse gas exchange with the atmosphere.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kiese, Ralf | |||
| 2 | Plot | Plot | Kiese, Ralf | |||
| 3 | Sample comment | Sample comment | Kiese, Ralf | IncubationStage | ||
| 4 | Sample comment | Sample comment | Kiese, Ralf | Gas Species | ||
| 5 | Experiment | Exp | Kiese, Ralf | Flux [mg m-2 h-1 or µg m-2 h-1]CO2 in mg m-2 h-1, CH4 and N2O in µg m-2 h-1. Mean value for 5 days period. All single fluxes with R²>= 0.8 considered. From each of the 60 plots at least 1 soil core was sampled. Soil cores were incubated in the lab in Germany with 3 different temperature and 2 different temperature levels. | ||
| 6 | Experiment | Exp | Kiese, Ralf | se_Flux [mg m-2 h-1 or µg m-2 h-1] |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3787 data points
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- Guetlein, A; Kiese, R; Gerschlauer, F (2020): Soil greenhouse gas fluxes from 2011 to 2015 measured at the Mt. Kilimanjaro. https://doi.org/10.1594/PANGAEA.912541
- Kimaro, J; Huwe, B; Bogner, C (2020): Soil erosion around Mt. Kilimanjaro. https://doi.org/10.1594/PANGAEA.918661
- Ngowi, BV; Tonnang, HEZ; Mwangi, EM et al. (2016): Field temperatures along Mt. Kilimanjaro, Farm Pakula. https://doi.org/10.1594/PANGAEA.858113