Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management

The use of time series of vegetation indices obtained from satellites has become a highly relevant source of data in studies of land degradation assessment and monitoring. However, information about future vegetation dynamics, which is key for early warnings oriented at land management decisions, is...

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Autores principales:	O. Bruzzone, M.H. Easdale
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Adaptive management NDVI Patagonia Rangelands Time series analysis Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/89edeba44fb546a385343e7d978f72a1
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spelling	oai:doaj.org-article:89edeba44fb546a385343e7d978f72a12021-12-01T04:50:48ZRhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management1470-160X10.1016/j.ecolind.2021.107663https://doaj.org/article/89edeba44fb546a385343e7d978f72a12021-07-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003289https://doaj.org/toc/1470-160XThe use of time series of vegetation indices obtained from satellites has become a highly relevant source of data in studies of land degradation assessment and monitoring. However, information about future vegetation dynamics, which is key for early warnings oriented at land management decisions, is still lacking. Trend-cycle was recently proposed as an indicator that represents a smoothed version of a seasonally adjusted data series, which provides information on long-term movements (trend) while including changes in direction underlying the series (cycles). The aim was to estimate the direction and speed of change of the Normalized Difference Vegetation Index (NDVI) trend-cycles as a complementary information of the rhythm of change between cyclic phases of vegetation productivity. In particular, we estimate the first and second derivative of the end-point of the trend-cycle function, as a measure of the direction the function is going and the speed of change, respectively. The potential advantage of our proposal is the fast processing for large areas and its sensitivity to capturing shifts in temporal dynamics for short time series data. This information can be used as a proxy to build scenarios of the future behaviour of vegetation dynamics, which is a relevant issue to move forward in the development of early warning tools for adaptive land management.O. BruzzoneM.H. EasdaleElsevierarticleAdaptive managementNDVIPatagoniaRangelandsTime series analysisEcologyQH540-549.5ENEcological Indicators, Vol 126, Iss , Pp 107663- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Adaptive management NDVI Patagonia Rangelands Time series analysis Ecology QH540-549.5
spellingShingle	Adaptive management NDVI Patagonia Rangelands Time series analysis Ecology QH540-549.5 O. Bruzzone M.H. Easdale Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
description	The use of time series of vegetation indices obtained from satellites has become a highly relevant source of data in studies of land degradation assessment and monitoring. However, information about future vegetation dynamics, which is key for early warnings oriented at land management decisions, is still lacking. Trend-cycle was recently proposed as an indicator that represents a smoothed version of a seasonally adjusted data series, which provides information on long-term movements (trend) while including changes in direction underlying the series (cycles). The aim was to estimate the direction and speed of change of the Normalized Difference Vegetation Index (NDVI) trend-cycles as a complementary information of the rhythm of change between cyclic phases of vegetation productivity. In particular, we estimate the first and second derivative of the end-point of the trend-cycle function, as a measure of the direction the function is going and the speed of change, respectively. The potential advantage of our proposal is the fast processing for large areas and its sensitivity to capturing shifts in temporal dynamics for short time series data. This information can be used as a proxy to build scenarios of the future behaviour of vegetation dynamics, which is a relevant issue to move forward in the development of early warning tools for adaptive land management.
format	article
author	O. Bruzzone M.H. Easdale
author_facet	O. Bruzzone M.H. Easdale
author_sort	O. Bruzzone
title	Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
title_short	Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
title_full	Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
title_fullStr	Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
title_full_unstemmed	Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
title_sort	rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/89edeba44fb546a385343e7d978f72a1
work_keys_str_mv	AT obruzzone rhythmofchangeoftrendcyclesofvegetationdynamicsasanearlywarningindicatorforlandmanagement AT mheasdale rhythmofchangeoftrendcyclesofvegetationdynamicsasanearlywarningindicatorforlandmanagement
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Rhythm of change of trend-cycles of vegetation dynamics as an early warning indicator for land management

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