Effects of nitrogen deposition on carbon allocation between wood and leaves in temperate forests
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Effects of nitrogen deposition on carbon allocation between wood and leaves in temperate forests. / Gao, Meixia; Zhu, Feifei; Hobbie, Erik A.; Zhu, Weixing; Li, Shanlong; Gurmesa, Geshere A.; Wang, Ang; Fang, Xiaoming; Zhu, Jiaojun; Gundersen, Per; Huang, Kai; Wu, Zhou; Fang, Yunting.
I: Plants People Planet, Bind 5, Nr. 2, 2023, s. 267-280.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Effects of nitrogen deposition on carbon allocation between wood and leaves in temperate forests
AU - Gao, Meixia
AU - Zhu, Feifei
AU - Hobbie, Erik A.
AU - Zhu, Weixing
AU - Li, Shanlong
AU - Gurmesa, Geshere A.
AU - Wang, Ang
AU - Fang, Xiaoming
AU - Zhu, Jiaojun
AU - Gundersen, Per
AU - Huang, Kai
AU - Wu, Zhou
AU - Fang, Yunting
PY - 2023
Y1 - 2023
N2 - Societal Impact Statement Increasing atmospheric nitrogen (N) deposition represents a major global change factor, but its long-term effect on tree growth and carbon (C) sequestration remains uncertain. Our manipulation experiment and meta-analysis reveal that N deposition in temperate and boreal forests promoted tree growth and the allocation of more C into wood than into leaves in China and worldwide. Thus, N deposition may increase forest C sequestration through enhanced wood production and distribution of C into stable sinks. In the context of achieving "Carbon Neutrality," understanding how N deposition affect long-term forest C sinks will help us with mitigation strategies under climate change. Increased nitrogen (N) deposition is driving many temperate and boreal forests in the Northern Hemisphere towards N saturation. However, it is uncertain how long-term N deposition affects tree growth and carbon (C) allocation in these forests. To investigate this, we treated temperate larch and mixed forests in northeastern China with N additions for 8 years. In addition, we collected data from 25 N-addition experiments in temperate and boreal forests worldwide to reveal the overall effects of N on tree growth and C allocation. Nitrogen additions significantly promoted total biomass increment by 24% in both study forests, with on average additional 8 kg C per kg N gain into woody biomass over the study period. Nitrogen additions increased the ratio of woody biomass increment to foliage litterfall production in the larch forest (by 34%). Literature data analysis also revealed greater N promotion on wood (24%) over foliage (9%) production. However, the positive effect on foliage diminished over time. These results combined imply that N deposition may promote tree growth in temperate and boreal regions and drive proportionally more photosynthate allocation into wood than leaves, thus may enhance forest C sequestration in the long run.
AB - Societal Impact Statement Increasing atmospheric nitrogen (N) deposition represents a major global change factor, but its long-term effect on tree growth and carbon (C) sequestration remains uncertain. Our manipulation experiment and meta-analysis reveal that N deposition in temperate and boreal forests promoted tree growth and the allocation of more C into wood than into leaves in China and worldwide. Thus, N deposition may increase forest C sequestration through enhanced wood production and distribution of C into stable sinks. In the context of achieving "Carbon Neutrality," understanding how N deposition affect long-term forest C sinks will help us with mitigation strategies under climate change. Increased nitrogen (N) deposition is driving many temperate and boreal forests in the Northern Hemisphere towards N saturation. However, it is uncertain how long-term N deposition affects tree growth and carbon (C) allocation in these forests. To investigate this, we treated temperate larch and mixed forests in northeastern China with N additions for 8 years. In addition, we collected data from 25 N-addition experiments in temperate and boreal forests worldwide to reveal the overall effects of N on tree growth and C allocation. Nitrogen additions significantly promoted total biomass increment by 24% in both study forests, with on average additional 8 kg C per kg N gain into woody biomass over the study period. Nitrogen additions increased the ratio of woody biomass increment to foliage litterfall production in the larch forest (by 34%). Literature data analysis also revealed greater N promotion on wood (24%) over foliage (9%) production. However, the positive effect on foliage diminished over time. These results combined imply that N deposition may promote tree growth in temperate and boreal regions and drive proportionally more photosynthate allocation into wood than leaves, thus may enhance forest C sequestration in the long run.
KW - carbon allocation
KW - C-N response
KW - litterfall production
KW - nitrogen deposition
KW - temperate forests
KW - tree growth
KW - woody biomass increment
KW - GLOBAL RESPONSE PATTERNS
KW - ATMOSPHERIC DEPOSITION
KW - ECOSYSTEM RESPONSE
KW - BIOMASS ALLOCATION
KW - GROWTH-RESPONSE
KW - BOREAL FORESTS
KW - LEAF NITROGEN
KW - ADDITIONS
KW - SEQUESTRATION
KW - PHOTOSYNTHESIS
U2 - 10.1002/ppp3.10341
DO - 10.1002/ppp3.10341
M3 - Journal article
VL - 5
SP - 267
EP - 280
JO - Plants, People, Planet
JF - Plants, People, Planet
SN - 2572-2611
IS - 2
ER -
ID: 326740246