RT journal article
T1 Depth-dependent responses of soil organic carbon under nitrogen deposition
A1 Hu, Y.
A1 Deng, Q.
A1 Kätterer, T.
A1 Olesen, J. E.
A1 Ying, S. C.
A1 Ochoa Hueso, Raúl
A1 Mueller, Carsten W.
A1 Weintraub, Michael N.
A1 Chen, Ji
A2 Biología
K1 carbon cycle–climate	feedbacks
K1 carbon losses
K1 nitrogen addition duration
K1 soil carbon sequestration
K1 soil profiles
AB Emerging	evidence	points	out	that	the	responses	of	soil	organic	carbon	(SOC)	to	nitrogen	(N)	addition	differ	along	the	soil	profile,	highlighting	the	importance	of	synthesizing	results	from	different	soil	layers.	Here,	using	a	global	meta-	analysis,	we	found	that	N	addition	significantly	enhanced	topsoil	(0–30 cm)	SOC	by	3.7%	(±1.4%)	in	forests	and	grasslands.	In	contrast,	SOC	in	the	subsoil	(30–100 cm)	initially	increased	with	N	addition	but	decreased	over	time.	The	model	selection	analysis	revealed	that	experimental duration and vegetation type are among the most important predictors across	a	wide	range	of	climatic,	environmental,	and	edaphic	variables.	The	contrasting	responses	of	SOC	to	N	addition	indicate	the	importance	of	considering	deep	soil	layers,	particularly	for	long-	term	continuous	N	deposition.	Finally,	the	lack	of	depth-	dependent	SOC	responses	to	N	addition	in	experimental	and	modeling	frameworks	has	likely	resulted	in	the	overestimation	of	changes	in	SOC	storage	under	enhanced	N	deposition.
PB Wiley
SN 1365-2486
YR 2024
FD 2024-03-05
LK http://hdl.handle.net/10498/32925
UL http://hdl.handle.net/10498/32925
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026