TY - JOUR
T1 - Exchangeable manganese regulates carbon storage in the humus layer of the boreal forest
AU - Zhang, Yunyu
AU - Hobbie, Sarah E.
AU - Schlesinger, William H.
AU - Berg, Björn
AU - Sun, Tao
AU - Zhu, Jiaojun
PY - 2024/3/26
Y1 - 2024/3/26
N2 - The huge carbon stock in humus layers of the boreal forest plays a critical role in the global carbon cycle. However, there remains uncertainty about the factors that regulate below-ground carbon sequestration in this region. Notably, based on evidence from two independent but complementary methods, we identified that exchangeable manganese is a critical factor regulating carbon accumulation in boreal forests across both regional scales and the entire boreal latitudinal range. Moreover, in a novel fertilization experiment, manganese addition reduced soil carbon stocks, but only after 4 y of additions. Our results highlight an underappreciated mechanism influencing the humus carbon pool of boreal forests.
AB - The huge carbon stock in humus layers of the boreal forest plays a critical role in the global carbon cycle. However, there remains uncertainty about the factors that regulate below-ground carbon sequestration in this region. Notably, based on evidence from two independent but complementary methods, we identified that exchangeable manganese is a critical factor regulating carbon accumulation in boreal forests across both regional scales and the entire boreal latitudinal range. Moreover, in a novel fertilization experiment, manganese addition reduced soil carbon stocks, but only after 4 y of additions. Our results highlight an underappreciated mechanism influencing the humus carbon pool of boreal forests.
KW - biogeochemical cycle
KW - carbon sequestration
KW - decomposition
KW - humus layer
KW - manganese
UR - http://www.scopus.com/inward/record.url?scp=85188760713&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85188760713&partnerID=8YFLogxK
U2 - 10.1073/pnas.2318382121
DO - 10.1073/pnas.2318382121
M3 - Article
C2 - 38502702
AN - SCOPUS:85188760713
SN - 0027-8424
VL - 121
SP - e2318382121
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 13
ER -