Preprints
https://doi.org/10.5194/acp-2022-388
https://doi.org/10.5194/acp-2022-388
 
07 Jul 2022
07 Jul 2022
Status: this preprint is currently under review for the journal ACP.

Fluxes, patterns and sources of phosphorus deposition in an urban-rural transition region in Southwest China

Yuanyuan Chen1, Jiang Liu2, Jiangyou Ran1, Rong Huang1, Xuesong Gao1, Wei Zhou1, Ting Lan1, Dinghua Ou1, Yan He3, Yalan Xiong1, Ling Luo3, Lu Wang4, and Ouping Deng1 Yuanyuan Chen et al.
  • 1College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R. China
  • 2State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, P.R. China
  • 3College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, P.R. China
  • 4Chongzhou Meteorological Bureau, Chengdu 611230, P.R. China

Abstract. Understanding the patterns of atmospheric phosphorus (P) deposition is essential for assessing the global P biogeochemical cycle. The atmospheric phosphorus (P) is an essential source of P in agricultural activities as well as eutrophication in waters; however, the information on P deposition is relatively less paid attention, especially in the anthropogenic influencing region. Therefore, this study chose a typical urban-rural transition as a representative to monitor the dry and wet P depositions for two years. The results showed that the fluxes of atmospheric total P deposition (ATD) ranged from 0.50 to 1.06 kg P hm-2 yr-1, and the primary form was atmospheric dry P deposition (ADD) (76.13 %, 0.76~0.84 kg hm-2 yr-1). Moreover, it was found that the monthly variations of P deposition were strongly influenced by meteorological factors, including precipitation, temperature, and relative humidity. However, the fluxes of ADD and ATD were more affected by land use, which increased with the agro-facility, town, and paddy field areas, but decreased with the forest and country road areas. These findings suggested that ADD was the primary form of ATD, and P deposition could be both affected by meteorological factors and land use types. Thus, proper management of land use may be helpful for mitigating the pollution caused by P deposition.

Yuanyuan Chen et al.

Status: open (until 18 Aug 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2022-388', Anonymous Referee #1, 20 Jul 2022 reply
  • RC2: 'Comment on acp-2022-388', Anonymous Referee #2, 23 Jul 2022 reply

Yuanyuan Chen et al.

Yuanyuan Chen et al.

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Short summary
Estimating the characteristics of atmospheric P deposition is critical to understanding the biogeochemical P cycle. Here we chose a typical urban-rural transition to monitor the dry and wet P depositions for two years. Found that atmospheric dry P deposition was the primary form of total P deposition, and P deposition could be both affected by meteorological factors and land use types. Findings provide proper management of land use which may help mitigate the pollution caused by P deposition.
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