Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship

Rapidly altering vegetation dynamics, is an aspect of global environmental change which has consequences for ecosystem structure, function, and the provision of ecosystem services. However, the responses of vegetation greenness and vegetation productivity to environmental changes may be inconsistent...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ning Pan, Shuai Wang, Fangli Wei, Miaogen Shen, Bojie Fu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Vegetation dynamics Inconsistent trends Productivity Greenness Carbon cycle Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/27b8035526f14d6b9094204a7a0162c7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:27b8035526f14d6b9094204a7a0162c7
record_format	dspace
spelling	oai:doaj.org-article:27b8035526f14d6b9094204a7a0162c72021-12-01T04:59:35ZInconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship1470-160X10.1016/j.ecolind.2021.108134https://doaj.org/article/27b8035526f14d6b9094204a7a0162c72021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21007998https://doaj.org/toc/1470-160XRapidly altering vegetation dynamics, is an aspect of global environmental change which has consequences for ecosystem structure, function, and the provision of ecosystem services. However, the responses of vegetation greenness and vegetation productivity to environmental changes may be inconsistent. Currently, we do not know how these inconsistent trends of greenness and productivity vary across the globe, nor the main causes of that variability. We used leaf area index (LAI) and net primary productivity (NPP) to represent vegetation greenness and productivity, respectively. The results showed that about 42% of the global vegetated area showed inconsistent trends of LAI and NPP from 2000 to 2015. These inconsistent trends were mainly found in humid areas. A parabolic relationship was found between the NPP and LAI of global vegetation, with a turning point in LAI of global vegetation of 4.5 ± 0.4 m2 m−2. The ratio of NPP to LAI (NPP/LAI), net primary production per unit leaf area, decreases as the LAI increases. The variability of NPP/LAI is significantly correlated with the consistency of NPP and LAI changes in different land cover types. NPP/LAI is lower in tree-dominated biomes with higher canopies (such as forests), and higher in areas dominated by short vegetation (such as shrubland and grassland). Drylands have higher NPP/LAI than humid regions which are perhaps due to high rates of net photosynthesis and narrow leaves. The results of this study not only clearly portray the relationship between vegetation greenness and productivity but also help us to understand the impact of vegetation dynamics on global carbon cycling in a changing environment.Ning PanShuai WangFangli WeiMiaogen ShenBojie FuElsevierarticleVegetation dynamicsInconsistent trendsProductivityGreennessCarbon cycleEcologyQH540-549.5ENEcological Indicators, Vol 131, Iss , Pp 108134- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Vegetation dynamics Inconsistent trends Productivity Greenness Carbon cycle Ecology QH540-549.5
spellingShingle	Vegetation dynamics Inconsistent trends Productivity Greenness Carbon cycle Ecology QH540-549.5 Ning Pan Shuai Wang Fangli Wei Miaogen Shen Bojie Fu Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship
description	Rapidly altering vegetation dynamics, is an aspect of global environmental change which has consequences for ecosystem structure, function, and the provision of ecosystem services. However, the responses of vegetation greenness and vegetation productivity to environmental changes may be inconsistent. Currently, we do not know how these inconsistent trends of greenness and productivity vary across the globe, nor the main causes of that variability. We used leaf area index (LAI) and net primary productivity (NPP) to represent vegetation greenness and productivity, respectively. The results showed that about 42% of the global vegetated area showed inconsistent trends of LAI and NPP from 2000 to 2015. These inconsistent trends were mainly found in humid areas. A parabolic relationship was found between the NPP and LAI of global vegetation, with a turning point in LAI of global vegetation of 4.5 ± 0.4 m2 m−2. The ratio of NPP to LAI (NPP/LAI), net primary production per unit leaf area, decreases as the LAI increases. The variability of NPP/LAI is significantly correlated with the consistency of NPP and LAI changes in different land cover types. NPP/LAI is lower in tree-dominated biomes with higher canopies (such as forests), and higher in areas dominated by short vegetation (such as shrubland and grassland). Drylands have higher NPP/LAI than humid regions which are perhaps due to high rates of net photosynthesis and narrow leaves. The results of this study not only clearly portray the relationship between vegetation greenness and productivity but also help us to understand the impact of vegetation dynamics on global carbon cycling in a changing environment.
format	article
author	Ning Pan Shuai Wang Fangli Wei Miaogen Shen Bojie Fu
author_facet	Ning Pan Shuai Wang Fangli Wei Miaogen Shen Bojie Fu
author_sort	Ning Pan
title	Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship
title_short	Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship
title_full	Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship
title_fullStr	Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship
title_full_unstemmed	Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship
title_sort	inconsistent changes in npp and lai determined from the parabolic lai versus npp relationship
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/27b8035526f14d6b9094204a7a0162c7
work_keys_str_mv	AT ningpan inconsistentchangesinnppandlaideterminedfromtheparaboliclaiversusnpprelationship AT shuaiwang inconsistentchangesinnppandlaideterminedfromtheparaboliclaiversusnpprelationship AT fangliwei inconsistentchangesinnppandlaideterminedfromtheparaboliclaiversusnpprelationship AT miaogenshen inconsistentchangesinnppandlaideterminedfromtheparaboliclaiversusnpprelationship AT bojiefu inconsistentchangesinnppandlaideterminedfromtheparaboliclaiversusnpprelationship
_version_	1718405588686209024

Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship

Ejemplares similares