Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands

The Tibetan Railway has introduced pressures on the fragile grassland ecosystems of the Tibetan Plateau. However, the impact of the railway on the carbon sequestration remains unclear, as existing studies primarily focus on in-situ vegetation observations. In this study, we extracted the start and e...

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Detalhes bibliográficos
Autores: Yang, Yajie, Yin, Gaofei, Xie, Jiangliu, Chen, Rui, Ma, Dujuan, Wang, Changjing, Zhang, Guodong, Wang, Meilian, Zhou, Lu, Huang, Lin, Xie, Qiaoyun, Verger, Aleixandre, Descals, Adrià, Filella, Iolanda, Peñuelas, Josep
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::a222e5c537d903ec5da4156150fcce25
Acesso em linha:http://hdl.handle.net/10261/429604
Access Level:acceso abierto
Palavra-chave:Tibetan Plateau
Tibetan railway
Carbon sequestration
Phenology
GPPmax
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spelling Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslandsYang, YajieYin, GaofeiXie, JiangliuChen, RuiMa, DujuanWang, ChangjingZhang, GuodongWang, MeilianZhou, LuHuang, LinXie, QiaoyunVerger, AleixandreDescals, AdriàFilella, IolandaPeñuelas, JosepTibetan PlateauTibetan railwayCarbon sequestrationPhenologyGPPmaxThe Tibetan Railway has introduced pressures on the fragile grassland ecosystems of the Tibetan Plateau. However, the impact of the railway on the carbon sequestration remains unclear, as existing studies primarily focus on in-situ vegetation observations. In this study, we extracted the start and end of the growing season (SOS, EOS) and maximum daily GPP (GPPmax) along the railway corridor from the satellite-derived Gross Primary Productivity (GPP) data, and quantified the extent and intensity of the railway’s disturbance on these indicators. We further employed the Statistical Model of Integrated Phenology and Physiology (SMIPP) to translate these disturbances into annual cumulative GPP (GPPann). Results show that Tibetan Railway significantly influences grassland within 50-meters, causing earlier SOS (0.1086 d m−1 ), delayed EOS (0.0646 d m−1 ), and reduced GPPmax (0.0069 gC m−2 d−1 m−1 ) as the distance to the railway gets closer. The advanced SOS and delayed EOS contributed gains of 28.82 and 104.26 MgC y−1 , but reduction in GPPmax accounted for a loss of 2952.79 MgC y−1 . Railway-induced phenology-physiology trade-off causes GPPann loss of 2819.71 MgC y−1 . This study reveals Tibetan Railway’s impact on grassland carbon cycling, offering insights for grassland conservation and sustainable transportation infrastructure projects.This work was supported by the Xizang Science and Technology Major Program [grant number XZ202402ZD0003-09]; the National Natural Science Foundation of China [grant numbers 42271323]; and the National Key Research and Development Program of China [grant number 2023YFF1303602].Peer reviewedTaylor & FrancisNational Natural Science Foundation of ChinaNational Key Research and Development Program (China)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/429604reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1080/17538947.2025.2554326Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::a222e5c537d903ec5da4156150fcce252026-05-22T06:33:51Z
dc.title.none.fl_str_mv Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
title Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
spellingShingle Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
Yang, Yajie
Tibetan Plateau
Tibetan railway
Carbon sequestration
Phenology
GPPmax
title_short Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
title_full Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
title_fullStr Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
title_full_unstemmed Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
title_sort Tibetan railway induced slight carbon loss: photosynthetic capacity decrease offsets growing season length increase in grasslands
dc.creator.none.fl_str_mv Yang, Yajie
Yin, Gaofei
Xie, Jiangliu
Chen, Rui
Ma, Dujuan
Wang, Changjing
Zhang, Guodong
Wang, Meilian
Zhou, Lu
Huang, Lin
Xie, Qiaoyun
Verger, Aleixandre
Descals, Adrià
Filella, Iolanda
Peñuelas, Josep
author Yang, Yajie
author_facet Yang, Yajie
Yin, Gaofei
Xie, Jiangliu
Chen, Rui
Ma, Dujuan
Wang, Changjing
Zhang, Guodong
Wang, Meilian
Zhou, Lu
Huang, Lin
Xie, Qiaoyun
Verger, Aleixandre
Descals, Adrià
Filella, Iolanda
Peñuelas, Josep
author_role author
author2 Yin, Gaofei
Xie, Jiangliu
Chen, Rui
Ma, Dujuan
Wang, Changjing
Zhang, Guodong
Wang, Meilian
Zhou, Lu
Huang, Lin
Xie, Qiaoyun
Verger, Aleixandre
Descals, Adrià
Filella, Iolanda
Peñuelas, Josep
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv National Natural Science Foundation of China
National Key Research and Development Program (China)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Tibetan Plateau
Tibetan railway
Carbon sequestration
Phenology
GPPmax
topic Tibetan Plateau
Tibetan railway
Carbon sequestration
Phenology
GPPmax
description The Tibetan Railway has introduced pressures on the fragile grassland ecosystems of the Tibetan Plateau. However, the impact of the railway on the carbon sequestration remains unclear, as existing studies primarily focus on in-situ vegetation observations. In this study, we extracted the start and end of the growing season (SOS, EOS) and maximum daily GPP (GPPmax) along the railway corridor from the satellite-derived Gross Primary Productivity (GPP) data, and quantified the extent and intensity of the railway’s disturbance on these indicators. We further employed the Statistical Model of Integrated Phenology and Physiology (SMIPP) to translate these disturbances into annual cumulative GPP (GPPann). Results show that Tibetan Railway significantly influences grassland within 50-meters, causing earlier SOS (0.1086 d m−1 ), delayed EOS (0.0646 d m−1 ), and reduced GPPmax (0.0069 gC m−2 d−1 m−1 ) as the distance to the railway gets closer. The advanced SOS and delayed EOS contributed gains of 28.82 and 104.26 MgC y−1 , but reduction in GPPmax accounted for a loss of 2952.79 MgC y−1 . Railway-induced phenology-physiology trade-off causes GPPann loss of 2819.71 MgC y−1 . This study reveals Tibetan Railway’s impact on grassland carbon cycling, offering insights for grassland conservation and sustainable transportation infrastructure projects.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/429604
url http://hdl.handle.net/10261/429604
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1080/17538947.2025.2554326
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.198674

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