Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China

Monitoring changes in the net primary productivity (NPP) of vegetation and its response to climatic changes is integral to gain insight into the carbon cycle mechanism and facilitate human well-being. Nonetheless, past studies lacked a month-scaled exploration and largely ignored spatial heterogenei...

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Autores principales:	Yahui Wang, Erfu Dai, Chunsheng Wu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Net primary production (NPP) Climate changes Hengduan Mountain region Monthly scale Time lag effect Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/15642594c711490ba5d8e83c6f8c5658
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spelling	oai:doaj.org-article:15642594c711490ba5d8e83c6f8c56582021-12-01T05:01:45ZSpatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China1470-160X10.1016/j.ecolind.2021.108273https://doaj.org/article/15642594c711490ba5d8e83c6f8c56582021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21009389https://doaj.org/toc/1470-160XMonitoring changes in the net primary productivity (NPP) of vegetation and its response to climatic changes is integral to gain insight into the carbon cycle mechanism and facilitate human well-being. Nonetheless, past studies lacked a month-scaled exploration and largely ignored spatial heterogeneity of the time lag effect. In this study, we focused on the Hengduan Mountain region situated in southwest China and analyzed the variation of NPP and its main driving mechanisms during 2000–2016. Our results revealed that: (1) The annual NPP signified a slightly increasing trend. On the grid-scale, the variation region of NPP was mainly characterized by increasing trends in most of the growth stages, except for July. (2) The response of NPP to climate change presented obvious spatial heterogeneity and complexity. The increasing NPP of the growing season in the northeast part and areas around Xichang can be attributed to temperature rising, while the increase of temperature in the central valleys led to a decline in NPP. Furthermore, decreasing precipitation led to the decrease in NPP in the western valleys. Thus, adequate water should be provided for the vegetation in western valley, and drought-tolerant plants should be choice in the central valley. (3) Changes in NPP were more influenced by temperature than precipitation, which was more evident on monthly scale, especially during April and May, and for the southeast and northeast part in June and August. (4) The lag time of NPP variation in relation to temperature changes was shorter than that of precipitation in most growth stages, indicating that NPP is more sensitive to temperature. In the colder region or growth stages, the lagged time of the response of NPP to temperature was shorter, which was more obvious on the monthly scale. This research will have important implications for ecosystem management.Yahui WangErfu DaiChunsheng WuElsevierarticleNet primary production (NPP)Climate changesHengduan Mountain regionMonthly scaleTime lag effectEcologyQH540-549.5ENEcological Indicators, Vol 132, Iss , Pp 108273- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Net primary production (NPP) Climate changes Hengduan Mountain region Monthly scale Time lag effect Ecology QH540-549.5
spellingShingle	Net primary production (NPP) Climate changes Hengduan Mountain region Monthly scale Time lag effect Ecology QH540-549.5 Yahui Wang Erfu Dai Chunsheng Wu Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China
description	Monitoring changes in the net primary productivity (NPP) of vegetation and its response to climatic changes is integral to gain insight into the carbon cycle mechanism and facilitate human well-being. Nonetheless, past studies lacked a month-scaled exploration and largely ignored spatial heterogeneity of the time lag effect. In this study, we focused on the Hengduan Mountain region situated in southwest China and analyzed the variation of NPP and its main driving mechanisms during 2000–2016. Our results revealed that: (1) The annual NPP signified a slightly increasing trend. On the grid-scale, the variation region of NPP was mainly characterized by increasing trends in most of the growth stages, except for July. (2) The response of NPP to climate change presented obvious spatial heterogeneity and complexity. The increasing NPP of the growing season in the northeast part and areas around Xichang can be attributed to temperature rising, while the increase of temperature in the central valleys led to a decline in NPP. Furthermore, decreasing precipitation led to the decrease in NPP in the western valleys. Thus, adequate water should be provided for the vegetation in western valley, and drought-tolerant plants should be choice in the central valley. (3) Changes in NPP were more influenced by temperature than precipitation, which was more evident on monthly scale, especially during April and May, and for the southeast and northeast part in June and August. (4) The lag time of NPP variation in relation to temperature changes was shorter than that of precipitation in most growth stages, indicating that NPP is more sensitive to temperature. In the colder region or growth stages, the lagged time of the response of NPP to temperature was shorter, which was more obvious on the monthly scale. This research will have important implications for ecosystem management.
format	article
author	Yahui Wang Erfu Dai Chunsheng Wu
author_facet	Yahui Wang Erfu Dai Chunsheng Wu
author_sort	Yahui Wang
title	Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China
title_short	Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China
title_full	Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China
title_fullStr	Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China
title_full_unstemmed	Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China
title_sort	spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/15642594c711490ba5d8e83c6f8c5658
work_keys_str_mv	AT yahuiwang spatiotemporalheterogeneityofnetprimaryproductivityandresponsetoclimatechangeinthemountainregionsofsouthwestchina AT erfudai spatiotemporalheterogeneityofnetprimaryproductivityandresponsetoclimatechangeinthemountainregionsofsouthwestchina AT chunshengwu spatiotemporalheterogeneityofnetprimaryproductivityandresponsetoclimatechangeinthemountainregionsofsouthwestchina
_version_	1718405585502732288

Spatiotemporal heterogeneity of net primary productivity and response to climate change in the mountain regions of southwest China

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