Preprints
https://doi.org/10.5194/egusphere-2023-2718
https://doi.org/10.5194/egusphere-2023-2718
21 Dec 2023
 | 21 Dec 2023

Response patterns of moss to atmospheric nitrogen deposition and nitrogen saturation in an urban-agro-forest transition

Ouping Deng, Yuanyuan Chen, Jingze Zhao, Xi Li, Wei Zhou, Ting Lan, Dinghua Ou, Yanyan Zhang, Jiang Liu, Ling Luo, Yueqiang He, Hanqing Yang, and Rong Huang

Abstract. Increasing trends of atmospheric nitrogen (N) deposition resulting from a large number of anthropogenic emissions of reactive N are dramatically altering the global biogeochemical cycle of N. Nitrogen uptake by mosses mainly from the atmosphere, making it a competent bio-indicator for N deposition. However, high uncertainties exist when using mosses to indicate N deposition, especially in choosing sampling period and sampling frequency. In this study, atmospheric N deposition and moss N content in the urban-agro-forest transition, a region with a high N deposition level of 27.46~43.70 kg N hm-2 yr-1, were monitored, and the method for atmospheric N deposition monitoring by mosses was optimized. We found that the optimal sampling frequency is within six months per time, and the optimal sampling time is autumn (October and November) and summer (July and August), which gives us a better estimation for atmospheric N deposition than other scenarios. In addition, the moss N content could better indicate total N deposition than the deposition of specific N species. This study eventually allowed moss to be used more effectively and sensibly as an indicator of atmospheric N deposition and helped to improve the accuracy of the model of quantifying N deposition by using mosses.

Ouping Deng, Yuanyuan Chen, Jingze Zhao, Xi Li, Wei Zhou, Ting Lan, Dinghua Ou, Yanyan Zhang, Jiang Liu, Ling Luo, Yueqiang He, Hanqing Yang, and Rong Huang

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-2718', Anonymous Referee #1, 28 Dec 2023
  • RC2: 'Comment on egusphere-2023-2718', Anonymous Referee #2, 31 Jan 2024
  • CC1: 'Comment on egusphere-2023-2718', Jianlin Shen, 01 Feb 2024
Ouping Deng, Yuanyuan Chen, Jingze Zhao, Xi Li, Wei Zhou, Ting Lan, Dinghua Ou, Yanyan Zhang, Jiang Liu, Ling Luo, Yueqiang He, Hanqing Yang, and Rong Huang
Ouping Deng, Yuanyuan Chen, Jingze Zhao, Xi Li, Wei Zhou, Ting Lan, Dinghua Ou, Yanyan Zhang, Jiang Liu, Ling Luo, Yueqiang He, Hanqing Yang, and Rong Huang

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Short summary
Estimating atmospheric nitrogen (N) deposition is critical to understanding the biogeochemical N cycle. Moss has long been considered as a bio-indicator for N deposition due to their accumulation of N from the atmosphere. Here, we improved the method for atmospheric N deposition monitoring using mosses. The sampling frequency and time was optimized. Eventually, this study contributed to improve the accuracy of the model of quantifying N deposition by using mosses.