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@ARTICLE{Tian:910928,
author = {Tian, Yanfang and Wang, Qiqi and Gao, Wei and Luo, Yu and
Wu, Lei and Rui, Yichao and Huang, Yaping and Xiao, Qiong
and Li, Xin and Zhang, Wenju},
title = {{O}rganic amendments facilitate soil carbon sequestration
via organic carbon accumulation and mitigation of inorganic
carbon loss},
journal = {Land degradation $\&$ development},
volume = {33},
number = {9},
issn = {1085-3278},
address = {Chichester, Sussex},
publisher = {Wiley},
reportid = {FZJ-2022-04257},
pages = {1423 - 1433},
year = {2022},
abstract = {Both soil organic carbon (SOC) and soil inorganic carbon
(SIC) are important carbon reservoirs involved in the global
carbon cycle. Fertilization especially organic amendments
can increase SOC sequestration, while nitrogen
fertilization-induced soil acidification leads to
significant SIC loss in alkline soil. How fertilization
changes SIC and SOC via altering abiotic and biotic
properties remains unclear. Here, we investigated the
effects of mineral fertilizer with/without organic
amendments (manure, straw, green manure) on SIC and SOC in
bulk soil and particle-size fractions, as well as their
interrelationship based on a 38-year field trial. Results
showed that compared to the unfertilized soil, mineral
fertilization significantly decreased SIC by
$13.38\%–15.69\%,$ primarily due to decreased soil pH.
However, mineral nitrogen plus manure (NM) largely increased
SIC by $26.55\%,$ likely resulting from thereprecipitated by
Ca2+ and/or Mg2+ compensation. Mineral nitrogen plus manure
and straw (NM, NS) increased SOC by $11.12\%–100.35\%.$
For bulk soil and particle-size fractions >0.25 mm, SIC
content was positively correlated with SOC. Random forest
model revealed that SOC was regulated by soil nutrients
(total nitrogen [TN], Olsen-P), microbial biomass and
β-1,4-N-acetyl-glucosaminidase. The change in SIC was
directly regulated by soil Mg2+, and indirectly by soil
nutrients (e.g., TN, Olsen-P) which affected crop-derived C
input. Our findings suggested that organic manure amendments
can facilitate SOC accumulation and mitigate SIC loss by
occluded more SIC in large soil particles. The results are
of fundamental significance for understanding the role of
optimal manure application played in SOC sequestration and
SIC accumulation.},
cin = {IBG-3},
ddc = {690},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000769266400001},
doi = {10.1002/ldr.4248},
url = {https://juser.fz-juelich.de/record/910928},
}