Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet

Vegetation dynamics and their response to climate change is critical for determining the mechanisms of climate-derived variations in terrestrial ecosystems. Here, the Normalized Difference Vegetation Index (NDVI) and monthly temperature and precipitation data were employed to examine the spatiotempo...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Meng Zhe, Xueqin Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	NDVI Climate change Time-lag effects Yamzhog Yumco Basin Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/3839fa276718475bbf802b0944a6439b
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:3839fa276718475bbf802b0944a6439b
record_format	dspace
spelling	oai:doaj.org-article:3839fa276718475bbf802b0944a6439b2021-12-01T04:46:01ZTime-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet1470-160X10.1016/j.ecolind.2021.107431https://doaj.org/article/3839fa276718475bbf802b0944a6439b2021-05-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21000960https://doaj.org/toc/1470-160XVegetation dynamics and their response to climate change is critical for determining the mechanisms of climate-derived variations in terrestrial ecosystems. Here, the Normalized Difference Vegetation Index (NDVI) and monthly temperature and precipitation data were employed to examine the spatiotemporal patterns in vegetation dynamics and investigate the time-lag effects of vegetation responses to climate variables in the Yamzhog Yumco Basin, South Tibet, during 2000–2018. The results reveal that the annual average growing season NDVI in the basin was 0.28, with lower values in the mountainous regions and higher values broadly distributed in the lake and river zones. An increasing NDVI trend was observed in nearly 62% of the total vegetation area, with significant changes observed in the western and southern boundaries of the basin. The vegetation areas in the eastern part of basin exhibited a decreasing NDVI trend. The growing season NDVI was positively correlated with temperature and precipitation, with temperature being the primary driving factor for vegetation growth across the entire basin. The cumulative temperature and precipitation of the current and previous months had the strongest impact on NDVI variations. The correlation coefficients between the NDVI, and temperature and precipitation were greater than 0.6 in approximately 72% and 60% of the vegetation area, respectively, with Lag 0–1 accounting for most of these larger correlation coefficients. Future development targets for grassland conservation projects, such as the reasonable livestock capacity, should consider the time-lag effects on vegetation dynamics.Meng ZheXueqin ZhangElsevierarticleNDVIClimate changeTime-lag effectsYamzhog Yumco BasinEcologyQH540-549.5ENEcological Indicators, Vol 124, Iss , Pp 107431- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	NDVI Climate change Time-lag effects Yamzhog Yumco Basin Ecology QH540-549.5
spellingShingle	NDVI Climate change Time-lag effects Yamzhog Yumco Basin Ecology QH540-549.5 Meng Zhe Xueqin Zhang Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet
description	Vegetation dynamics and their response to climate change is critical for determining the mechanisms of climate-derived variations in terrestrial ecosystems. Here, the Normalized Difference Vegetation Index (NDVI) and monthly temperature and precipitation data were employed to examine the spatiotemporal patterns in vegetation dynamics and investigate the time-lag effects of vegetation responses to climate variables in the Yamzhog Yumco Basin, South Tibet, during 2000–2018. The results reveal that the annual average growing season NDVI in the basin was 0.28, with lower values in the mountainous regions and higher values broadly distributed in the lake and river zones. An increasing NDVI trend was observed in nearly 62% of the total vegetation area, with significant changes observed in the western and southern boundaries of the basin. The vegetation areas in the eastern part of basin exhibited a decreasing NDVI trend. The growing season NDVI was positively correlated with temperature and precipitation, with temperature being the primary driving factor for vegetation growth across the entire basin. The cumulative temperature and precipitation of the current and previous months had the strongest impact on NDVI variations. The correlation coefficients between the NDVI, and temperature and precipitation were greater than 0.6 in approximately 72% and 60% of the vegetation area, respectively, with Lag 0–1 accounting for most of these larger correlation coefficients. Future development targets for grassland conservation projects, such as the reasonable livestock capacity, should consider the time-lag effects on vegetation dynamics.
format	article
author	Meng Zhe Xueqin Zhang
author_facet	Meng Zhe Xueqin Zhang
author_sort	Meng Zhe
title	Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet
title_short	Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet
title_full	Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet
title_fullStr	Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet
title_full_unstemmed	Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet
title_sort	time-lag effects of ndvi responses to climate change in the yamzhog yumco basin, south tibet
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/3839fa276718475bbf802b0944a6439b
work_keys_str_mv	AT mengzhe timelageffectsofndviresponsestoclimatechangeintheyamzhogyumcobasinsouthtibet AT xueqinzhang timelageffectsofndviresponsestoclimatechangeintheyamzhogyumcobasinsouthtibet
_version_	1718405770462101504

Time-lag effects of NDVI responses to climate change in the Yamzhog Yumco Basin, South Tibet

Ejemplares similares