Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea

Growing degree days (GDD) and chilling requirements (CR) of canopy phenological onset are popular thermal indicators showing forest adaptation to local temperature regimes. This study proposes a satellite-based approach for mapping the canopy-onset thermal traits and analyzing their controlling fact...

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Autores principales:	Nanghyun Cho, Sinkyu Kang, Bora Lee, Casimir Agossou, Jihye Lee, Jong-Hwan Lim, Eunsook Kim
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Phenology Growing Degree Days (GDD) Chilling Requirements (CR) Canopy onset date Temperature Adaptation Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/ee18844c73a441019e5cb65cb2f20bda
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id	oai:doaj.org-article:ee18844c73a441019e5cb65cb2f20bda
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spelling	oai:doaj.org-article:ee18844c73a441019e5cb65cb2f20bda2021-12-01T04:47:50ZMapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea1470-160X10.1016/j.ecolind.2021.107528https://doaj.org/article/ee18844c73a441019e5cb65cb2f20bda2021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X2100193Xhttps://doaj.org/toc/1470-160XGrowing degree days (GDD) and chilling requirements (CR) of canopy phenological onset are popular thermal indicators showing forest adaptation to local temperature regimes. This study proposes a satellite-based approach for mapping the canopy-onset thermal traits and analyzing their controlling factors in temperate forests. GDD and CR from 2003 to 2017 were estimated with canopy onset dates and air temperature data retrieved from Moderate Resolution and Imaging Spectroradiometer (MODIS) images. Results revealed that GDD and CR showed distinct geographic patterns with latitude and altitude but with low inter-annual variations of less than 30% of the coefficient of variation. The satellite-based spatial patterns of GDD and CR were well explained by temperature with R-squares of 0.70 and 0.58, which were comparable to 0.63 and 0.59 from the field observation data, respectively. As well, satellite-derived sensitivities of GDD and CR to unit changes in temperature were +52.7 and −21.3°CoC−1, respectively, which were again comparable to the sensitivities from the field data (+50.9 and −29.9°CoC−1, respectively). The patterns and temperature dependency of thermal parameters seem to be relevant to species-level thermal acclimation and community-level plant composition changes with temperature.Nanghyun ChoSinkyu KangBora LeeCasimir AgossouJihye LeeJong-Hwan LimEunsook KimElsevierarticlePhenologyGrowing Degree Days (GDD)Chilling Requirements (CR)Canopy onset dateTemperatureAdaptationEcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107528- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Phenology Growing Degree Days (GDD) Chilling Requirements (CR) Canopy onset date Temperature Adaptation Ecology QH540-549.5
spellingShingle	Phenology Growing Degree Days (GDD) Chilling Requirements (CR) Canopy onset date Temperature Adaptation Ecology QH540-549.5 Nanghyun Cho Sinkyu Kang Bora Lee Casimir Agossou Jihye Lee Jong-Hwan Lim Eunsook Kim Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea
description	Growing degree days (GDD) and chilling requirements (CR) of canopy phenological onset are popular thermal indicators showing forest adaptation to local temperature regimes. This study proposes a satellite-based approach for mapping the canopy-onset thermal traits and analyzing their controlling factors in temperate forests. GDD and CR from 2003 to 2017 were estimated with canopy onset dates and air temperature data retrieved from Moderate Resolution and Imaging Spectroradiometer (MODIS) images. Results revealed that GDD and CR showed distinct geographic patterns with latitude and altitude but with low inter-annual variations of less than 30% of the coefficient of variation. The satellite-based spatial patterns of GDD and CR were well explained by temperature with R-squares of 0.70 and 0.58, which were comparable to 0.63 and 0.59 from the field observation data, respectively. As well, satellite-derived sensitivities of GDD and CR to unit changes in temperature were +52.7 and −21.3°CoC−1, respectively, which were again comparable to the sensitivities from the field data (+50.9 and −29.9°CoC−1, respectively). The patterns and temperature dependency of thermal parameters seem to be relevant to species-level thermal acclimation and community-level plant composition changes with temperature.
format	article
author	Nanghyun Cho Sinkyu Kang Bora Lee Casimir Agossou Jihye Lee Jong-Hwan Lim Eunsook Kim
author_facet	Nanghyun Cho Sinkyu Kang Bora Lee Casimir Agossou Jihye Lee Jong-Hwan Lim Eunsook Kim
author_sort	Nanghyun Cho
title	Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea
title_short	Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea
title_full	Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea
title_fullStr	Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea
title_full_unstemmed	Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea
title_sort	mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in korea
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ee18844c73a441019e5cb65cb2f20bda
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_version_	1718405758364680192

Mapping satellite-derived thermal parameters of canopy onset and assessing their temperature dependency for temperate forests in Korea

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