Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China

The relationship between vegetation Net primary production (NPP) and climate change is critical for understanding the driving forces of vegetation changes, while less were studied based on detrending analysis and Bioclimatic variables. In this study, detrending analysis based on Ensemble Empirical M...

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Autores principales:	Huiyu Liu, Junhe Jia, Zhenshan Lin, Zhaoyue Wang, Haibo Gong
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ensemble Empirical Mode Decomposition (EEMD) detrending Trend reversal Bioclimatic variables Interannual variations Nonlinearity Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/a806419e26944be5abd21bca9392be6a
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spelling	oai:doaj.org-article:a806419e26944be5abd21bca9392be6a2021-12-01T04:41:23ZRelationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China1470-160X10.1016/j.ecolind.2020.107276https://doaj.org/article/a806419e26944be5abd21bca9392be6a2021-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20312164https://doaj.org/toc/1470-160XThe relationship between vegetation Net primary production (NPP) and climate change is critical for understanding the driving forces of vegetation changes, while less were studied based on detrending analysis and Bioclimatic variables. In this study, detrending analysis based on Ensemble Empirical Mode Decomposition (EEMD) method was adopted to assess the relationship between NPP and climate change in different vegetation zones in Northwest China. The results indicated that: (1) although monotonic increasing was the main type of vegetation NPP trend (49.42%), shifted trend accounted for 36.02% of the whole area. There were some risks of vegetation degradation in temperate desert and alpine region of the Qinghai Tibet Platea, but chances for vegetation recovery in temperate grassland and warm temperate deciduous broad-leaved forest zones; (2) EEMD-detrending analysis performed much better than linear detrending analysis for assessing the relationship between climate change and vegetation NPP; (3) compared with no detrending, EEMD-detrending reduced the importance of BIO1 (annual mean temperature) and BIO2 (mean temperature diurnal range) for vegetation NPP, but enhanced those of BIO13 (precipitation of the wettest month) and BIO15 (precipitation seasonality); (4) BIO1, BIO2, BIO12 (annual precipitation), and BIO13 mainly showed positive relationships with interannual NPP variations, except that BIO1 and BIO13 mainly showed negative relationship in temperate grassland and warm temperate deciduous broad-leaved forest zones. Interannual NPP variations were dominated by BIO12 and BIO13, except that alpine region of Tibet plateau was dominated by BIO1 and BIO2. Our results demonstrated that EEMD-detrending analysis and Bioclimatic variables can better explore the interannual vegetation-climate relationship.Huiyu LiuJunhe JiaZhenshan LinZhaoyue WangHaibo GongElsevierarticleEnsemble Empirical Mode Decomposition (EEMD) detrendingTrend reversalBioclimatic variablesInterannual variationsNonlinearityEcologyQH540-549.5ENEcological Indicators, Vol 122, Iss , Pp 107276- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ensemble Empirical Mode Decomposition (EEMD) detrending Trend reversal Bioclimatic variables Interannual variations Nonlinearity Ecology QH540-549.5
spellingShingle	Ensemble Empirical Mode Decomposition (EEMD) detrending Trend reversal Bioclimatic variables Interannual variations Nonlinearity Ecology QH540-549.5 Huiyu Liu Junhe Jia Zhenshan Lin Zhaoyue Wang Haibo Gong Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China
description	The relationship between vegetation Net primary production (NPP) and climate change is critical for understanding the driving forces of vegetation changes, while less were studied based on detrending analysis and Bioclimatic variables. In this study, detrending analysis based on Ensemble Empirical Mode Decomposition (EEMD) method was adopted to assess the relationship between NPP and climate change in different vegetation zones in Northwest China. The results indicated that: (1) although monotonic increasing was the main type of vegetation NPP trend (49.42%), shifted trend accounted for 36.02% of the whole area. There were some risks of vegetation degradation in temperate desert and alpine region of the Qinghai Tibet Platea, but chances for vegetation recovery in temperate grassland and warm temperate deciduous broad-leaved forest zones; (2) EEMD-detrending analysis performed much better than linear detrending analysis for assessing the relationship between climate change and vegetation NPP; (3) compared with no detrending, EEMD-detrending reduced the importance of BIO1 (annual mean temperature) and BIO2 (mean temperature diurnal range) for vegetation NPP, but enhanced those of BIO13 (precipitation of the wettest month) and BIO15 (precipitation seasonality); (4) BIO1, BIO2, BIO12 (annual precipitation), and BIO13 mainly showed positive relationships with interannual NPP variations, except that BIO1 and BIO13 mainly showed negative relationship in temperate grassland and warm temperate deciduous broad-leaved forest zones. Interannual NPP variations were dominated by BIO12 and BIO13, except that alpine region of Tibet plateau was dominated by BIO1 and BIO2. Our results demonstrated that EEMD-detrending analysis and Bioclimatic variables can better explore the interannual vegetation-climate relationship.
format	article
author	Huiyu Liu Junhe Jia Zhenshan Lin Zhaoyue Wang Haibo Gong
author_facet	Huiyu Liu Junhe Jia Zhenshan Lin Zhaoyue Wang Haibo Gong
author_sort	Huiyu Liu
title	Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China
title_short	Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China
title_full	Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China
title_fullStr	Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China
title_full_unstemmed	Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China
title_sort	relationship between net primary production and climate change in different vegetation zones based on eemd detrending – a case study of northwest china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/a806419e26944be5abd21bca9392be6a
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Relationship between net primary production and climate change in different vegetation zones based on EEMD detrending – A case study of Northwest China

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