Soil CO2 Efflux Dataset
Creators: name: Naishen Liang
name: Munemasa Teramoto
name: Takagi, Masahiro
name: Jiye Zeng
Publisher: name: figshare
Year: 2016
Subjects: subject: 50304 Soil Chemistry (excl. Carbon Sequestration Science)
subject: FOS: Agriculture, forestry and fisheries
subject: FOS: Agriculture, forestry and fisheries
subject: 50301 Carbon Sequestration Science
subject: 50101 Ecological Impacts of Climate Change
subject: FOS: Earth and related environmental sciences
subject: FOS: Earth and related environmental sciences
subject: Soil Science
subject: Ecology
subject: FOS: Biological sciences
subject: FOS: Biological sciences

description: <b>High resolution data on the impact of warming on soil CO<sub>2</sub> efflux of an Asian monsoon forest</b><br>This is a part of a ongoing project for evaluation of global warming impacts on soil carbon dynamics of Japan forest ecosystems. From the end of 2008, we started the soil warming experiment in a 55-year-old evergreen broad-leaved forest in the boundary between subtropical and warm-temperate biomes in southern Japan. We used carbon infrared heaters to increase soil temperature at 5 cm depth for about 2.5°C and continuously recorded CO<sub>2</sub> emission from the soil surface using a multichannel automated chamber system. Here we present the experimental processes and datasets of CO<sub>2</sub> emission rate, soil temperature and soil moisture from the control, trenched and warmed trenched plots, respectively. Long-term and high resolution make the datasets meaningful for the coupled climate-ecosystem models to tune the dynamic as well as mean parameters of soil organic carbon decomposition for their future predictions.<br> <b>General note</b> 1. It is worth mentioning that, for fully interpreting the metadata, the data users should refer to the descriptor (Liang <i>et al.</i> 201x) where the full experiment design is available. 2. We used one micro infrared CO<sub>2</sub> analyzer (IRGA; LI-820, LI-COR, Lincoln, NE, USA) to sequentially measure soil CO<sub>2 </sub>efflux (<i>R</i><sub>s</sub>) over fifteen chambers. We set the measuring cycle over the fifteen chambers to one hour, the chambers were closed sequentially and the sampling period for each chamber was 240 seconds (4 minutes). The datasets are listed as a continuous time-series; however, it is worth to noted that the actually measurement interval for each chamber is one hour. 3. Due to the experiment design, increase of new sensors and improvement of the measurement program, the datasets were separated into four packages (table 1). Total volume of the Efflux datasets was about 2,820 Mb and volume of the Environment datasets were about 36 Mb. For the users who are not familiar with compute programing, we also separated or combined the Efflux datasets to each month; while the Environment datasets were separated or combined to each year. 4. The sensors we used to measure the most important parameters for <i>R</i><sub>s</sub> calculation and <i>R</i><sub>s</sub> related environmental factors were also listed in Table 2. You can fine the detailed descriptor in the metafile named “High resolution data on the impact of warming on soil CO<sub>2</sub> efflux of an Asian monsoon forest”. <br> <b><i>When using these data</i></b>, please cite the following original publications and adhere closely to those methods and notes for analysis considering whole experimental design. 1. Naishen LIANG; Munemasa TERAMOTO; Masahiro TAKAGI; Jiye ZENG (2016) Warming impacts on soil CO<sub>2</sub> efflux of an Asian monsoon forest: experiment process and high resolution datasets. Scientific Data x: xxxx 2. Munemasa TERAMOTO; Naishen LIANG; Masahiro TAKAGI; Jiye ZENG; John GRACE (2016) Warming impacts on soil CO<sub>2</sub> efflux of an Asian monsoon forest: experiment process and high resolution datasets. Scientific Reports <b>6:</b> 35563, doi:10.1038/srep35563 (2016) Additionally, please cite the Figshare data package: Naishen LIANG; Munemasa TERAMOTO; Masahiro TAKAGI; Jiye ZENG (2016) Data from: Warming impacts on soil CO<sub>2</sub> efflux of an Asian monsoon forest: experiment process and high resolution datasets. <i>Figshare</i> https://dx.doi.org/10.6084/m9.figshare.3808119.v1 (2016)