Preprints
https://doi.org/10.5194/essd-2021-454
https://doi.org/10.5194/essd-2021-454
 
04 Mar 2022
04 Mar 2022
Status: this preprint is currently under review for the journal ESSD.

Soil respiration database at different time scales in forest ecosystems across China

Hongru Sun1,2, Zhenzhu Xu1, and Bingrui Jia1 Hongru Sun et al.
  • 1State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China

Abstract. China’s forests rank fifth in the world by area and cover a broad climatic gradient from cold-temperate to tropical zones, and play a key role in the global carbon cycle. Studies on forest soil respiration (Rs) are increasing rapidly in China over the last two decades, but the resulting Rs data need to be summarized. Here, we compile a comprehensive database of Rs in China’s undisturbed forest ecosystems from literature published up to December 31, 2018, including monthly Rs and the concurrently measured soil temperature (N = 8317), mean monthly Rs (N = 5003), and annual Rs (N = 634). Detailed plot information was also recorded, such as geographical location, climate factors, stand characteristics, and measurement description. We examine some aspects of the database – Rs equations fitted with soil temperature, temperature sensitivity (Q10), monthly variations and annual effluxes in cold-temperate, temperate, subtropical and tropical zones. We hope the database will be used by the science community to provide a better understanding of carbon cycle in China's forest ecosystems and reduce uncertainty in evaluating of carbon budget at the large scale. The database is publicly available at https://www.pangaea.de/tok/788910d8d3ae0a415c7bad2e7025a3f16f042a1b (Sun et al. 2021).

Hongru Sun et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-454', Anonymous Referee #1, 22 Mar 2022
    • AC1: 'Reply on RC1', Bingrui Jia, 03 May 2022
  • RC2: 'Comment on essd-2021-454', Anonymous Referee #2, 04 Apr 2022
    • AC2: 'Reply on RC2', Bingrui Jia, 03 May 2022
  • RC3: 'Comment on essd-2021-454', Anonymous Referee #3, 04 Apr 2022
    • AC3: 'Reply on RC3', Bingrui Jia, 03 May 2022
  • RC4: 'Comment on essd-2021-454', Anonymous Referee #4, 05 Apr 2022
    • AC4: 'Reply on RC4', Bingrui Jia, 03 May 2022

Hongru Sun et al.

Data sets

Soil respiration at different time scales from 2000 to 2018 in forest ecosystems across China Hongru Sun, Zhenzhu Xu, Bingrui Jia https://www.pangaea.de/tok/788910d8d3ae0a415c7bad2e7025a3f16f042a1b

Hongru Sun et al.

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Short summary
We compiled a new soil respiration (Rs) database in China’s forests from 568 literatures published up to 2018. The hourly, monthly and annual samples were 8317, 5003 and 634. Most of Rs shown in figures, but were seldom exploited. For the first time, these Rs data were digitized, accounting for 82 %. Rs measured with the common methods was selected (Li-6400, Li-8100, Li-8150, gas chromatography), which had been tested the small differences of ~10 %. Bamboo was also included, showing the highest Rs.