Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 3.480
IF3.480
IF 5-year value: 4.194
IF 5-year
4.194
CiteScore value: 6.7
CiteScore
6.7
SNIP value: 1.143
SNIP1.143
IPP value: 3.65
IPP3.65
SJR value: 1.761
SJR1.761
Scimago H <br class='widget-line-break'>index value: 118
Scimago H
index
118
h5-index value: 60
h5-index60
Preprints
https://doi.org/10.5194/bg-2018-124
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-2018-124
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  03 Apr 2018

03 Apr 2018

Review status
This discussion paper is a preprint. It has been under review for the journal Biogeosciences (BG). The manuscript was not accepted for further review after discussion.

Higher response of terrestrial plant growth to ammonium than nitrate addition

Liming Yan1,2, Xiaoni Xu1, and Jianyang Xia1,2 Liming Yan et al.
  • 1Tiantong National Field Observation Station for Forest Ecosystem & Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, China
  • 2Institute of Eco-Chongming, Shanghai 200062, China

Abstract. Terrestrial plant growth and ecosystem productivity are strongly limited by availability of nitrogen (N). Atmospheric deposition of wet N as nitrate and ammonium has been rapidly increased since the industrial revolution, associated with a high spatial variation of changes in the ammonium- to nitrate-N ratio (i.e., NH4+-N / NO3-N). However, whether and how terrestrial plants respond differently to NH4+-N and NO3-N addition have never been quantitatively synthesized. Here, we first did a literature survey and analysis on the model projections of future changes in NH4+-N / NO3-N in atmospheric N deposition. Most models predicted an increase in the global average of NH4+-N / NO3-N ratio, but decreasing trends in western Europe and eastern China. Then, a meta-analysis was applied to compare the different growth responses of 402 plant species to NH4+-N and NO3-N addition from 217 N fertilization studies. In general, a greater response of plant growth to NH4+-N (+6.3 % g−1 N) than NO3-N (+1.0 % g−1 N) addition was detected across all species. The larger sensitivity of plant growth to NH4+- than NO3-N was found in all plant functional types except for grasses. In addition, the NO3-N addition promoted terrestrial plants to allocate more biomass to above-ground, whereas NH4+-N addition significantly enhanced below- but not above-ground growth. These results imply that the global accelerating N deposition could stimulate plant growth more in regions with increasing (e.g., North America) than decreasing (e.g., eastern China) NH4+-N / NO3-N ratio. The findings suggest future assessments and predictions on the vegetation response to atmospheric N enrichment could benefit from a better understanding of plant strategies for acquiring different forms of N.

Liming Yan et al.

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Liming Yan et al.

Liming Yan et al.

Viewed

Total article views: 600 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
353 233 14 600 60 7 7
  • HTML: 353
  • PDF: 233
  • XML: 14
  • Total: 600
  • Supplement: 60
  • BibTeX: 7
  • EndNote: 7
Views and downloads (calculated since 03 Apr 2018)
Cumulative views and downloads (calculated since 03 Apr 2018)

Viewed (geographical distribution)

Total article views: 600 (including HTML, PDF, and XML) Thereof 597 with geography defined and 3 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 27 Sep 2020
Publications Copernicus
Download
Short summary
The patterns of the ratio of atmospheric deposited ammonium- to nitrate-N shows an increasing trend with the total N load since the industrial revolution. As a key role of N in plant growth, it is important to know the general response patterns of plant growth to N forms. By the synthesized dataset and meta-analysis, we found a higher response of plant growth to NH4+-N than NO3-N addition across all species. Our results suggest plant could more positively respond to N deposition in the future.
The patterns of the ratio of atmospheric deposited ammonium- to nitrate-N shows an increasing...
Citation
Altmetrics