@article{fdi:010080595,
  title = {{T}opsoil organic matter build-up in glacier forelands around the world},
  author = {{K}hedim, {N}. and {C}ecillon, {L}. and {P}oulenard, {J}. {M}. and {B}arre, {P}. and {B}audin, {F}. and {M}arta, {S}. and {R}abatel, {A}. and {D}entant, {C}. and {C}auvy-{F}raunie, {S}. and {A}nthelme, {F}abien and {G}ielly, {L}. and {A}mbrosini, {R}. and {F}ranzetti, {A}. and {A}zzoni, {R}. {S}. and {C}accianiga, {M}. {S}. and {C}ompostella, {C}. and {C}lague, {J}. and {T}ielidze, {L}. and {M}essager, {E}. and {C}holer, {P}. and {F}icetola, {G}. {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}ince the last glacial maximum, soil formation related to ice-cover shrinkage has been one major sink of carbon accumulating as soil organic matter ({SOM}), a phenomenon accelerated by the ongoing global warming. {I}n recently deglacierized forelands, processes of {SOM} accumulation, including those that control carbon and nitrogen sequestration rates and biogeochemical stability of newly sequestered carbon, remain poorly understood. {H}ere, we investigate the build-up of {SOM} during the initial stages (up to 410 years) of topsoil development in 10 glacier forelands distributed on four continents. {W}e test whether the net accumulation of {SOM} on glacier forelands (i) depends on the time since deglacierization and local climatic conditions (temperature and precipitation); (ii) is accompanied by a decrease in its stability and (iii) is mostly due to an increasing contribution of organic matter from plant origin. {W}e measured total {SOM} concentration (carbon, nitrogen), its relative hydrogen/oxygen enrichment, stable isotopic ({C}-13, {N}-15) and carbon functional groups ({C}-{H}, {C}={O}, {C}={C}) compositions, and its distribution in carbon pools of different thermal stability. {W}e show that {SOM} content increases with time and is faster on forelands experiencing warmer climates. {T}he build-up of {SOM} pools shows consistent trends across the studied soil chronosequences. {D}uring the first decades of soil development, the low amount of {SOM} is dominated by a thermally stable carbon pool with a small and highly thermolabile pool. {T}he stability of {SOM} decreases with soil age at all sites, indicating that {SOM} storage is dominated by the accumulation of labile {SOM} during the first centuries of soil development, and suggesting plant carbon inputs to soil ({SOM} depleted in nitrogen, enriched in hydrogen and in aromatic carbon). {O}ur findings highlight the potential vulnerability of {SOM} stocks from proglacial areas to decomposition and suggest that their durability largely depends on the relative contribution of carbon inputs from plants.},
  keywords = {carbon stability ; chronosequence ; climate sensitivity ; soil organic matter ; topsoil development ; {FRANCE} ; {ITALIE} ; {GEORGIE} ; {CANADA} ; {BOLIVIE} ; {EQUATEUR} ; {ARGENTINE} ; {NEPAL} ; {GROENLAND} ; {GLACIER} {NOIR} ; {GLACIER} {BLANC} ; {FORNI} {GLACIER} ; {GERGETI} {GLACIER} ; {TIEDEMANN} {GLACIER} ; {CHARQUINI} {GLACIER} ; {ZONGO} {GLACIER} ; {ANTISANA} {GLACIER} ; {PERITO} {MORENO} {GLACIER} ; {LOBUCHE} {GLACIER} ; {APUSINIKAJIK} {GLACIER}},
  booktitle = {},
  journal = {{G}lobal {C}hange {B}iology},
  volume = {27},
  numero = {8},
  pages = {1662--1677},
  ISSN = {1354-1013},
  year = {2021},
  DOI = {10.1111/gcb.15496},
  URL = {https://www.documentation.ird.fr/hor/fdi:010080595},
}