Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China
Permafrost melting due to climate warming in recent decades has produced significant effects on forest ecosystems, especially the boreal biome at its southernmost limit in Asia. How this warming affects wood formation of trees at intra-annual resolution is unclear, yet is crucial for assessing the i...
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ftdoajarticles:oai:doaj.org/article:9eb502826e85470d9fe2d404ab694edf 2024-09-15T18:29:33+00:00 Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China Liangjun Zhu Meng Wang J. Julio Camarero David J. Cooper Danyang Yuan Zecheng Chen Xiaochun Wang Paolo Cherubini 2024-07-01T00:00:00Z https://doi.org/10.1016/j.ecolind.2024.112158 https://doaj.org/article/9eb502826e85470d9fe2d404ab694edf EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S1470160X24006150 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2024.112158 https://doaj.org/article/9eb502826e85470d9fe2d404ab694edf Ecological Indicators, Vol 164, Iss , Pp 112158- (2024) Tree rings False rings Daily climate response Drought stress Rapid warming Daxing’an Mountains Ecology QH540-549.5 article 2024 ftdoajarticles https://doi.org/10.1016/j.ecolind.2024.112158 2024-08-05T17:49:18Z Permafrost melting due to climate warming in recent decades has produced significant effects on forest ecosystems, especially the boreal biome at its southernmost limit in Asia. How this warming affects wood formation of trees at intra-annual resolution is unclear, yet is crucial for assessing the impact of permafrost melting on boreal forest growth. In this study, we compared the radial growth and intra-annual wood density fluctuations (IADFs) of Dahurian larch (Larix gmelinii Rupr.) at a permafrost (PF) and a non-permafrost (NPF) site at the southernmost permafrost limit in northeast China and quantified their relationships with climate factors. Drought in early summer was the main factor limiting growth of Dahurian larch. The basal area increment (BAI) of trees at both sites increased initially and then decreased in the 1980s, probably in response to warm-dry climate conditions. Earlywood IADFs (IADF-E) occurred in 14.0% and 9.3% of dated rings at the NPF and PF sites, while the frequency of latewood IADFs (IADF-L) was 6.8% and 2.7% at these two sites. The frequency of IADF-E in trees at both sites was positively and negatively related to June temperatures (and vapor pressure deficit) and precipitation, respectively, suggesting drought stress in June triggered the formation of IADF-E. The IADF-Ls were probably formed in response to warm temperatures in the late growing season. A higher BAI and a lower frequency of IADF-Es of trees at the PF site than at the NPF site indicated that permafrost melting could alleviate drought stress in early summer and promote radial growth of Dahurian larch. This greatly improved forest carbon sequestration and wood quality of some northeastern Asian boreal forests may offset to some extent the adverse effects of warming-drying climates at some sites of northeast Asia. Larch IADF-Es recorded extreme droughts in early summer, giving us a new sight for reconstructing high-frequency extreme climate events. If climate warming continues, the benefits of permafrost melting will ... Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Ecological Indicators 164 112158 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Tree rings False rings Daily climate response Drought stress Rapid warming Daxing’an Mountains Ecology QH540-549.5 |
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Tree rings False rings Daily climate response Drought stress Rapid warming Daxing’an Mountains Ecology QH540-549.5 Liangjun Zhu Meng Wang J. Julio Camarero David J. Cooper Danyang Yuan Zecheng Chen Xiaochun Wang Paolo Cherubini Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China |
topic_facet |
Tree rings False rings Daily climate response Drought stress Rapid warming Daxing’an Mountains Ecology QH540-549.5 |
description |
Permafrost melting due to climate warming in recent decades has produced significant effects on forest ecosystems, especially the boreal biome at its southernmost limit in Asia. How this warming affects wood formation of trees at intra-annual resolution is unclear, yet is crucial for assessing the impact of permafrost melting on boreal forest growth. In this study, we compared the radial growth and intra-annual wood density fluctuations (IADFs) of Dahurian larch (Larix gmelinii Rupr.) at a permafrost (PF) and a non-permafrost (NPF) site at the southernmost permafrost limit in northeast China and quantified their relationships with climate factors. Drought in early summer was the main factor limiting growth of Dahurian larch. The basal area increment (BAI) of trees at both sites increased initially and then decreased in the 1980s, probably in response to warm-dry climate conditions. Earlywood IADFs (IADF-E) occurred in 14.0% and 9.3% of dated rings at the NPF and PF sites, while the frequency of latewood IADFs (IADF-L) was 6.8% and 2.7% at these two sites. The frequency of IADF-E in trees at both sites was positively and negatively related to June temperatures (and vapor pressure deficit) and precipitation, respectively, suggesting drought stress in June triggered the formation of IADF-E. The IADF-Ls were probably formed in response to warm temperatures in the late growing season. A higher BAI and a lower frequency of IADF-Es of trees at the PF site than at the NPF site indicated that permafrost melting could alleviate drought stress in early summer and promote radial growth of Dahurian larch. This greatly improved forest carbon sequestration and wood quality of some northeastern Asian boreal forests may offset to some extent the adverse effects of warming-drying climates at some sites of northeast Asia. Larch IADF-Es recorded extreme droughts in early summer, giving us a new sight for reconstructing high-frequency extreme climate events. If climate warming continues, the benefits of permafrost melting will ... |
format |
Article in Journal/Newspaper |
author |
Liangjun Zhu Meng Wang J. Julio Camarero David J. Cooper Danyang Yuan Zecheng Chen Xiaochun Wang Paolo Cherubini |
author_facet |
Liangjun Zhu Meng Wang J. Julio Camarero David J. Cooper Danyang Yuan Zecheng Chen Xiaochun Wang Paolo Cherubini |
author_sort |
Liangjun Zhu |
title |
Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China |
title_short |
Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China |
title_full |
Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China |
title_fullStr |
Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China |
title_full_unstemmed |
Permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal Larix gmelinii forests at its southernmost limit in northeast China |
title_sort |
permafrost melting enhances growth but leads to less intra-annual density fluctuations in boreal larix gmelinii forests at its southernmost limit in northeast china |
publisher |
Elsevier |
publishDate |
2024 |
url |
https://doi.org/10.1016/j.ecolind.2024.112158 https://doaj.org/article/9eb502826e85470d9fe2d404ab694edf |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Ecological Indicators, Vol 164, Iss , Pp 112158- (2024) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1470160X24006150 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2024.112158 https://doaj.org/article/9eb502826e85470d9fe2d404ab694edf |
op_doi |
https://doi.org/10.1016/j.ecolind.2024.112158 |
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Ecological Indicators |
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112158 |
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