Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia

Abstract Remote sensing and ground vegetation observation data show that climate warming promotes global vegetation greening, and the increase in air temperature in High Mountain Asia (HMA) is more than twice the global average. Under such a drastic warming in climate, how have the vegetation dynami...

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Autores principales:	Yongchang Liu, Zhi Li, Yaning Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0eba8bbfb3e54206be0bd070e1f4614d
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spelling	oai:doaj.org-article:0eba8bbfb3e54206be0bd070e1f4614d2021-12-02T17:19:15ZContinuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia10.1038/s41598-021-97240-42045-2322https://doaj.org/article/0eba8bbfb3e54206be0bd070e1f4614d2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97240-4https://doaj.org/toc/2045-2322Abstract Remote sensing and ground vegetation observation data show that climate warming promotes global vegetation greening, and the increase in air temperature in High Mountain Asia (HMA) is more than twice the global average. Under such a drastic warming in climate, how have the vegetation dynamics in HMA changed? In this study, we use the Normalized Difference Vegetation Index (NDVI) from 1982 to 2015 to evaluate the latest changes in vegetation dynamics in HMA and their climate-driving mechanisms. The results show that over the past 30 years, HMA has generally followed a “warm-wet” trend, with temperatures charting a continuous rise. During 1982–1998 precipitation increased (1.16 mm yr−1), but depicted to reverse since 1998 (− 2.73 mm yr−1). Meanwhile, the NDVI in HMA increased (0.012 per decade) prior to 1998, after which the trend reversed and declined (− 0.005 per decade). The main reason for the browning of HMA vegetation is the dual effects of warming and precipitation changes. As mentioned, the increase in air temperature in HMA exceeds the global average. The increase of water vapor pressure deficit caused by global warming accelerates the loss and consumption of surface water, and also aggravates the soil water deficit. That is to say, the abnormal increase of land evapotranspiration far exceeds the precipitation, and the regional water shortage increases. Climate change is the primary factor driving these vegetation and water dynamics, with the largest proportion reaching 41.9%.Yongchang LiuZhi LiYaning ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yongchang Liu Zhi Li Yaning Chen Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia
description	Abstract Remote sensing and ground vegetation observation data show that climate warming promotes global vegetation greening, and the increase in air temperature in High Mountain Asia (HMA) is more than twice the global average. Under such a drastic warming in climate, how have the vegetation dynamics in HMA changed? In this study, we use the Normalized Difference Vegetation Index (NDVI) from 1982 to 2015 to evaluate the latest changes in vegetation dynamics in HMA and their climate-driving mechanisms. The results show that over the past 30 years, HMA has generally followed a “warm-wet” trend, with temperatures charting a continuous rise. During 1982–1998 precipitation increased (1.16 mm yr−1), but depicted to reverse since 1998 (− 2.73 mm yr−1). Meanwhile, the NDVI in HMA increased (0.012 per decade) prior to 1998, after which the trend reversed and declined (− 0.005 per decade). The main reason for the browning of HMA vegetation is the dual effects of warming and precipitation changes. As mentioned, the increase in air temperature in HMA exceeds the global average. The increase of water vapor pressure deficit caused by global warming accelerates the loss and consumption of surface water, and also aggravates the soil water deficit. That is to say, the abnormal increase of land evapotranspiration far exceeds the precipitation, and the regional water shortage increases. Climate change is the primary factor driving these vegetation and water dynamics, with the largest proportion reaching 41.9%.
format	article
author	Yongchang Liu Zhi Li Yaning Chen
author_facet	Yongchang Liu Zhi Li Yaning Chen
author_sort	Yongchang Liu
title	Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia
title_short	Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia
title_full	Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia
title_fullStr	Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia
title_full_unstemmed	Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia
title_sort	continuous warming shift greening towards browning in the southeast and northwest high mountain asia
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0eba8bbfb3e54206be0bd070e1f4614d
work_keys_str_mv	AT yongchangliu continuouswarmingshiftgreeningtowardsbrowninginthesoutheastandnorthwesthighmountainasia AT zhili continuouswarmingshiftgreeningtowardsbrowninginthesoutheastandnorthwesthighmountainasia AT yaningchen continuouswarmingshiftgreeningtowardsbrowninginthesoutheastandnorthwesthighmountainasia
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Continuous warming shift greening towards browning in the Southeast and Northwest High Mountain Asia

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