Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau
Climate warming poses complex challenges for alpine ecosystems on the Qinghai–Tibetan Plateau (QTP), further exacerbated by permafrost degradation. Quantifying the specific ecological impacts of permafrost thaw remains elusive, as ecological variations are also influenced by external climate factors...
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ftdoajarticles:oai:doaj.org/article:673c74666bfe47959bc821f5dad2fe02 2024-09-30T14:41:04+00:00 Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau Jianan Hu Zhuotong Nan Hailong Ji Shuping Zhao Minyue Ou 2024-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ad751e https://doaj.org/article/673c74666bfe47959bc821f5dad2fe02 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ad751e https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ad751e 1748-9326 https://doaj.org/article/673c74666bfe47959bc821f5dad2fe02 Environmental Research Letters, Vol 19, Iss 10, p 104051 (2024) ecological resilience permafrost net primary production process-based modeling Qinghai–Tibet Plateau Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2024 ftdoajarticles https://doi.org/10.1088/1748-9326/ad751e 2024-09-17T16:00:48Z Climate warming poses complex challenges for alpine ecosystems on the Qinghai–Tibetan Plateau (QTP), further exacerbated by permafrost degradation. Quantifying the specific ecological impacts of permafrost thaw remains elusive, as ecological variations are also influenced by external climate factors. This study tackles this gap by employing the Noah-MP model to simultaneously simulate permafrost thermal–hydrological dynamics and net primary production (NPP) across the Three River Headwaters Region from 1989 to 2018. Model results were validated against observations. To isolate the ecological effects of permafrost thaw, we implemented a novel relative time transformation on the simulation results. Our analysis reveals a 7.5 × 10 ^4 km ^2 reduction in permafrost coverage during the study period, coinciding with a 1.09 g C m ^−2 yr ^−2 increase in NPP. While precipitation is the primary driver of NPP changes in most years, soil moisture emerges as a crucial factor during permafrost disappearance, when the ground transitions to seasonally frozen ground. Surprisingly, the NPP response to permafrost disappearance exhibited a transient effect, diminishing to negligible levels within five years post-thaw. These findings enhance our understanding of the intricate and dynamic responses of the QTP ecosystem to permafrost degradation under a warming climate. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Environmental Research Letters 19 10 104051 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ecological resilience permafrost net primary production process-based modeling Qinghai–Tibet Plateau Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
ecological resilience permafrost net primary production process-based modeling Qinghai–Tibet Plateau Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Jianan Hu Zhuotong Nan Hailong Ji Shuping Zhao Minyue Ou Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau |
topic_facet |
ecological resilience permafrost net primary production process-based modeling Qinghai–Tibet Plateau Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Climate warming poses complex challenges for alpine ecosystems on the Qinghai–Tibetan Plateau (QTP), further exacerbated by permafrost degradation. Quantifying the specific ecological impacts of permafrost thaw remains elusive, as ecological variations are also influenced by external climate factors. This study tackles this gap by employing the Noah-MP model to simultaneously simulate permafrost thermal–hydrological dynamics and net primary production (NPP) across the Three River Headwaters Region from 1989 to 2018. Model results were validated against observations. To isolate the ecological effects of permafrost thaw, we implemented a novel relative time transformation on the simulation results. Our analysis reveals a 7.5 × 10 ^4 km ^2 reduction in permafrost coverage during the study period, coinciding with a 1.09 g C m ^−2 yr ^−2 increase in NPP. While precipitation is the primary driver of NPP changes in most years, soil moisture emerges as a crucial factor during permafrost disappearance, when the ground transitions to seasonally frozen ground. Surprisingly, the NPP response to permafrost disappearance exhibited a transient effect, diminishing to negligible levels within five years post-thaw. These findings enhance our understanding of the intricate and dynamic responses of the QTP ecosystem to permafrost degradation under a warming climate. |
format |
Article in Journal/Newspaper |
author |
Jianan Hu Zhuotong Nan Hailong Ji Shuping Zhao Minyue Ou |
author_facet |
Jianan Hu Zhuotong Nan Hailong Ji Shuping Zhao Minyue Ou |
author_sort |
Jianan Hu |
title |
Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau |
title_short |
Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau |
title_full |
Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau |
title_fullStr |
Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau |
title_full_unstemmed |
Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau |
title_sort |
effect of permafrost degradation on grassland net primary productivity in qinghai–tibet plateau |
publisher |
IOP Publishing |
publishDate |
2024 |
url |
https://doi.org/10.1088/1748-9326/ad751e https://doaj.org/article/673c74666bfe47959bc821f5dad2fe02 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Environmental Research Letters, Vol 19, Iss 10, p 104051 (2024) |
op_relation |
https://doi.org/10.1088/1748-9326/ad751e https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ad751e 1748-9326 https://doaj.org/article/673c74666bfe47959bc821f5dad2fe02 |
op_doi |
https://doi.org/10.1088/1748-9326/ad751e |
container_title |
Environmental Research Letters |
container_volume |
19 |
container_issue |
10 |
container_start_page |
104051 |
_version_ |
1811643496474345472 |