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Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau

Changes in spring and autumn phenology and thus growing season length (GSL) pose great challenges in accurately predicting terrestrial primary productivity. However, how spring and autumn phenology in response to land-use change and nitrogen deposition and underlying mechanisms remain unclear. This...

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Autores principales: Zhou, Zhenxing, Zhang, Liwei, Liu, Yinzhan, Zhang, Kunpeng, Wang, Wenrui, Zhu, Junkang, Chai, Shijie, Zhang, Huiying, Miao, Yuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9083225/
https://www.ncbi.nlm.nih.gov/pubmed/35548313
http://dx.doi.org/10.3389/fpls.2022.861794
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author Zhou, Zhenxing
Zhang, Liwei
Liu, Yinzhan
Zhang, Kunpeng
Wang, Wenrui
Zhu, Junkang
Chai, Shijie
Zhang, Huiying
Miao, Yuan
author_facet Zhou, Zhenxing
Zhang, Liwei
Liu, Yinzhan
Zhang, Kunpeng
Wang, Wenrui
Zhu, Junkang
Chai, Shijie
Zhang, Huiying
Miao, Yuan
author_sort Zhou, Zhenxing
collection PubMed
description Changes in spring and autumn phenology and thus growing season length (GSL) pose great challenges in accurately predicting terrestrial primary productivity. However, how spring and autumn phenology in response to land-use change and nitrogen deposition and underlying mechanisms remain unclear. This study was conducted to explore the GSL and its components [i.e., the beginning of growing season and ending of growing season (EGS)] in response to mowing and nitrogen addition in a temperate steppe on the Mongolia Plateau during 2 years with hydrologically contrasting condition [dry (2014) vs. wet (2015)]. Our results demonstrated that mowing advanced the BGS only by 3.83 days, while nitrogen addition advanced and delayed the BGS and EGS by 2.85 and 3.31 days, respectively, and thus prolonged the GSL by 6.16 days across the two growing seasons from 2014 to 2015. When analyzed by each year, nitrogen addition lengthened the GSL in the dry year (2014), whereas it shortened the GSL in the wet year (2015). Further analyses revealed that the contrasting impacts of nitrogen on the GSL were attributed to monthly precipitation regimes and plant growth rate indicated by the maximum of normalized difference vegetation index (NDV(max)). Moreover, changes in the GSL and its two components had divergent impacts on community productivity. The findings highlight the critical role of precipitation regimes in regulating the responses of spring and autumn phenology to nutrient enrichment and suggest that the relationships of ecosystem productivity with spring and autumn phenology largely depend on interannual precipitation fluctuations under future increased nitrogen deposition scenarios.
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spelling pubmed-90832252022-05-10 Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau Zhou, Zhenxing Zhang, Liwei Liu, Yinzhan Zhang, Kunpeng Wang, Wenrui Zhu, Junkang Chai, Shijie Zhang, Huiying Miao, Yuan Front Plant Sci Plant Science Changes in spring and autumn phenology and thus growing season length (GSL) pose great challenges in accurately predicting terrestrial primary productivity. However, how spring and autumn phenology in response to land-use change and nitrogen deposition and underlying mechanisms remain unclear. This study was conducted to explore the GSL and its components [i.e., the beginning of growing season and ending of growing season (EGS)] in response to mowing and nitrogen addition in a temperate steppe on the Mongolia Plateau during 2 years with hydrologically contrasting condition [dry (2014) vs. wet (2015)]. Our results demonstrated that mowing advanced the BGS only by 3.83 days, while nitrogen addition advanced and delayed the BGS and EGS by 2.85 and 3.31 days, respectively, and thus prolonged the GSL by 6.16 days across the two growing seasons from 2014 to 2015. When analyzed by each year, nitrogen addition lengthened the GSL in the dry year (2014), whereas it shortened the GSL in the wet year (2015). Further analyses revealed that the contrasting impacts of nitrogen on the GSL were attributed to monthly precipitation regimes and plant growth rate indicated by the maximum of normalized difference vegetation index (NDV(max)). Moreover, changes in the GSL and its two components had divergent impacts on community productivity. The findings highlight the critical role of precipitation regimes in regulating the responses of spring and autumn phenology to nutrient enrichment and suggest that the relationships of ecosystem productivity with spring and autumn phenology largely depend on interannual precipitation fluctuations under future increased nitrogen deposition scenarios. Frontiers Media S.A. 2022-04-25 /pmc/articles/PMC9083225/ /pubmed/35548313 http://dx.doi.org/10.3389/fpls.2022.861794 Text en Copyright © 2022 Zhou, Zhang, Liu, Zhang, Wang, Zhu, Chai, Zhang and Miao. 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
Zhou, Zhenxing
Zhang, Liwei
Liu, Yinzhan
Zhang, Kunpeng
Wang, Wenrui
Zhu, Junkang
Chai, Shijie
Zhang, Huiying
Miao, Yuan
Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau
title Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau
title_full Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau
title_fullStr Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau
title_full_unstemmed Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau
title_short Contrasting Effects of Nitrogen Addition on Vegetative Phenology in Dry and Wet Years in a Temperate Steppe on the Mongolian Plateau
title_sort contrasting effects of nitrogen addition on vegetative phenology in dry and wet years in a temperate steppe on the mongolian plateau
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9083225/
https://www.ncbi.nlm.nih.gov/pubmed/35548313
http://dx.doi.org/10.3389/fpls.2022.861794
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