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Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019

Changes in net ecosystem productivity (NEP) in terrestrial ecosystems in response to climate warming and land cover changes have been of great concern. In this study, we applied the normalized difference vegetation index (NDVI), average temperature, and sunshine hours to drive the C-FIX model and to...

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Autores principales: Huang, Yutao, Wang, Fang, Zhang, Lijuan, Zhao, Junfang, Zheng, Hong, Zhang, Fan, Wang, Nan, Gu, Jiakai, Zhao, Yufeng, Zhang, Wenshuai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10050708/
https://www.ncbi.nlm.nih.gov/pubmed/37008462
http://dx.doi.org/10.3389/fpls.2023.1120064
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author Huang, Yutao
Wang, Fang
Zhang, Lijuan
Zhao, Junfang
Zheng, Hong
Zhang, Fan
Wang, Nan
Gu, Jiakai
Zhao, Yufeng
Zhang, Wenshuai
author_facet Huang, Yutao
Wang, Fang
Zhang, Lijuan
Zhao, Junfang
Zheng, Hong
Zhang, Fan
Wang, Nan
Gu, Jiakai
Zhao, Yufeng
Zhang, Wenshuai
author_sort Huang, Yutao
collection PubMed
description Changes in net ecosystem productivity (NEP) in terrestrial ecosystems in response to climate warming and land cover changes have been of great concern. In this study, we applied the normalized difference vegetation index (NDVI), average temperature, and sunshine hours to drive the C-FIX model and to simulate the regional NEP in China from 2000 to 2019. We also analyzed the spatial patterns and the spatiotemporal variation characteristics of the NEP of terrestrial ecosystems and discussed their main influencing factors. The results showed that (1) the annual average NEP of terrestrial ecosystems in China from 2000 to 2019 was 1.08 PgC, exhibiting a highly significant increasing trend with a rate of change of 0.83 PgC/10 y. The terrestrial ecosystems in China remained as carbon sinks from 2000 to 2019, and the carbon sink capacity increased significantly. The NEP of the terrestrial ecosystem increased by 65% during 2015–2019 compared to 2000–2004 (2) There was spatial differences in the NEP distribution of the terrestrial ecosystems in China from 2000–2019. Taking the line along the Daxinganling-Yin Mountains-Helan Mountains-Transverse Range as the boundary, the NEP was significantly higher in the eastern part than in the western part. Among them, the NEP was positive (carbon sink) in northeastern, central, and southern China, and negative (carbon source) in parts of northwestern China and the Tibet Autonomous Region. The spatial variation of NEP in terrestrial ecosystems increased from 2000 to 2009. The areas with a significant increase accounted for 45.85% and were mainly located in the central and southwestern regions. (3) The simulation results revealed that vegetation changes and CO(2) concentration changes both contributed to the increase in the NEP in China, contributing 85.96% and 36.84%, respectively. The vegetation changes were the main factor causing the increase in the NEP. The main contribution of this study is to further quantify the NEP of terrestrial ecosystems in China and identify the influencing factors that caused these changes.
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spelling pubmed-100507082023-03-30 Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019 Huang, Yutao Wang, Fang Zhang, Lijuan Zhao, Junfang Zheng, Hong Zhang, Fan Wang, Nan Gu, Jiakai Zhao, Yufeng Zhang, Wenshuai Front Plant Sci Plant Science Changes in net ecosystem productivity (NEP) in terrestrial ecosystems in response to climate warming and land cover changes have been of great concern. In this study, we applied the normalized difference vegetation index (NDVI), average temperature, and sunshine hours to drive the C-FIX model and to simulate the regional NEP in China from 2000 to 2019. We also analyzed the spatial patterns and the spatiotemporal variation characteristics of the NEP of terrestrial ecosystems and discussed their main influencing factors. The results showed that (1) the annual average NEP of terrestrial ecosystems in China from 2000 to 2019 was 1.08 PgC, exhibiting a highly significant increasing trend with a rate of change of 0.83 PgC/10 y. The terrestrial ecosystems in China remained as carbon sinks from 2000 to 2019, and the carbon sink capacity increased significantly. The NEP of the terrestrial ecosystem increased by 65% during 2015–2019 compared to 2000–2004 (2) There was spatial differences in the NEP distribution of the terrestrial ecosystems in China from 2000–2019. Taking the line along the Daxinganling-Yin Mountains-Helan Mountains-Transverse Range as the boundary, the NEP was significantly higher in the eastern part than in the western part. Among them, the NEP was positive (carbon sink) in northeastern, central, and southern China, and negative (carbon source) in parts of northwestern China and the Tibet Autonomous Region. The spatial variation of NEP in terrestrial ecosystems increased from 2000 to 2009. The areas with a significant increase accounted for 45.85% and were mainly located in the central and southwestern regions. (3) The simulation results revealed that vegetation changes and CO(2) concentration changes both contributed to the increase in the NEP in China, contributing 85.96% and 36.84%, respectively. The vegetation changes were the main factor causing the increase in the NEP. The main contribution of this study is to further quantify the NEP of terrestrial ecosystems in China and identify the influencing factors that caused these changes. Frontiers Media S.A. 2023-03-15 /pmc/articles/PMC10050708/ /pubmed/37008462 http://dx.doi.org/10.3389/fpls.2023.1120064 Text en Copyright © 2023 Huang, Wang, Zhang, Zhao, Zheng, Zhang, Wang, Gu, Zhao and Zhang https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Huang, Yutao
Wang, Fang
Zhang, Lijuan
Zhao, Junfang
Zheng, Hong
Zhang, Fan
Wang, Nan
Gu, Jiakai
Zhao, Yufeng
Zhang, Wenshuai
Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019
title Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019
title_full Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019
title_fullStr Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019
title_full_unstemmed Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019
title_short Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019
title_sort changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in china from 2000 to 2019
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10050708/
https://www.ncbi.nlm.nih.gov/pubmed/37008462
http://dx.doi.org/10.3389/fpls.2023.1120064
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