.png){kind=icon}
.png){kind=icon}
Return
Local and Global-Scale Soil Nitrogen Stocks and Burial Rates in Mangroves
.png){kind=icon}
PRE
AI
H
J
A
DOI：10.1029/2025GB008959.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Coastal marine environments can mitigate the deleterious effects of terrestrial reactive nitrogen (N) loads through burial and long-term storage in soils and sediments, although the quantification of these values is limited and poorly constrained. We utilized a spatially explicit global coastal typology for sedimentary settings and combined sedimentary-geomorphic settings (SGS) to characterize global mangrove soil N stocks and burial rates. We found that carbonate setting mangroves store 24.64 (95% CI: 23.03–25.92) Mg N ha−1 in the top 1 m of soil, which is more than the 11.73 (95% CI: 11.41–12.26) Mg ha−1 stored by terrigenous settings. Burial rates were similar between terrigenous and carbonate settings, with 3.43 (95% CI: 2.80, 4.25) and 4.80 (95% CI: 3.95, 6.00) g N m−2 y−1, respectively. Scaled to SGS land area, global N stocks and burial rates summed to 190.5 (95% CI: 95.9–264) Tg and 686.1 (95% CI: 583.2–803.6) Gg y−1, the latter accounting for 3% of all marine burial, 5.6% of all coastal burial, and 1.4% of estimated annual N riverine fluxes. Our estimates constrain uncertainties in mangrove N stocks and burial across distinct coastal typologies and help place mangrove N storage and burial in a global biogeochemical context relevant to coastal water quality.
Keywords:
mangroves
total nitrogen
stocks
burial rates
sedimentary-geomorphic setting
Journal
IF:
5.5
Papers:
3.2K
Citations:
1.7W
Organization
Cited Papers