Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China

Terrestrial ecosystems play a critical role in the global carbon cycle and the feedbacks of carbon cycle will significantly impact future climate change. It's worth noting that semi-arid biomes in the Southern Hemisphere have driven the global carbon sink anomaly over the past 30 years. However...

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Autores principales:	Lingtong Du, Fei Gong, Yijian Zeng, Longlong Ma, Chenglong Qiao, Hongyue Wu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Carbon use efficiency (CUE) Terrestrial ecosystem Net primary productivity (NPP) Desert/grassland biome transition zone Arid and semi-arid region MODIS Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/6cf62ce0115445dbb0542362af4a6471
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spelling	oai:doaj.org-article:6cf62ce0115445dbb0542362af4a64712021-12-01T04:31:15ZCarbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China1470-160X10.1016/j.ecolind.2020.106971https://doaj.org/article/6cf62ce0115445dbb0542362af4a64712021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20309109https://doaj.org/toc/1470-160XTerrestrial ecosystems play a critical role in the global carbon cycle and the feedbacks of carbon cycle will significantly impact future climate change. It's worth noting that semi-arid biomes in the Southern Hemisphere have driven the global carbon sink anomaly over the past 30 years. However, how does the desert/grassland biome transition zone, a part of arid and semi-arid biomes, respond to climate change and anthropogenic activities in carbon use efficiency (CUE) is still unclear. Therefore, based on the CUE of terrestrial ecosystem estimated by the moderate resolution imaging spectroradiometer (MODIS) data from 2001 to 2017, the spatial and temporal characteristics of CUE in Ningxia province, a typical desert/grassland biome transition zone, were studied. The main driving factors in climate and ecosystem were also investigated by partial correlation analysis. Results showed that the CUE of terrestrial ecosystems in desert/grassland biome transition zone is higher than 0.5, a constant value of CUE defined in many ecological models. However, the CUE varies with the ecosystem types even when they are located in the same climatic zone. There is a decreasing trend of annual CUE in the period of 2001–2017 and most of them will persistently decrease in future at pixels scales, which could be mainly caused by the land use change. Comparing the habitat conditions, we found the lower canopy density and water stress could increase the CUE in the same ecosystem, which indicates the plant could increase their efficiency of transforming carbon from the atmosphere to terrestrial biomass in adverse environment. Finally, the CUE significantly correlated to net primary productivity (NPP) and autotrophic respiration (Ra) in ecosystem processes, meanwhile water stress (lower precipitation) and heat stress (higher temperature) could increase the CUE, but the temperature has variable impacts in different ecosystem.Lingtong DuFei GongYijian ZengLonglong MaChenglong QiaoHongyue WuElsevierarticleCarbon use efficiency (CUE)Terrestrial ecosystemNet primary productivity (NPP)Desert/grassland biome transition zoneArid and semi-arid regionMODISEcologyQH540-549.5ENEcological Indicators, Vol 120, Iss , Pp 106971- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Carbon use efficiency (CUE) Terrestrial ecosystem Net primary productivity (NPP) Desert/grassland biome transition zone Arid and semi-arid region MODIS Ecology QH540-549.5
spellingShingle	Carbon use efficiency (CUE) Terrestrial ecosystem Net primary productivity (NPP) Desert/grassland biome transition zone Arid and semi-arid region MODIS Ecology QH540-549.5 Lingtong Du Fei Gong Yijian Zeng Longlong Ma Chenglong Qiao Hongyue Wu Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China
description	Terrestrial ecosystems play a critical role in the global carbon cycle and the feedbacks of carbon cycle will significantly impact future climate change. It's worth noting that semi-arid biomes in the Southern Hemisphere have driven the global carbon sink anomaly over the past 30 years. However, how does the desert/grassland biome transition zone, a part of arid and semi-arid biomes, respond to climate change and anthropogenic activities in carbon use efficiency (CUE) is still unclear. Therefore, based on the CUE of terrestrial ecosystem estimated by the moderate resolution imaging spectroradiometer (MODIS) data from 2001 to 2017, the spatial and temporal characteristics of CUE in Ningxia province, a typical desert/grassland biome transition zone, were studied. The main driving factors in climate and ecosystem were also investigated by partial correlation analysis. Results showed that the CUE of terrestrial ecosystems in desert/grassland biome transition zone is higher than 0.5, a constant value of CUE defined in many ecological models. However, the CUE varies with the ecosystem types even when they are located in the same climatic zone. There is a decreasing trend of annual CUE in the period of 2001–2017 and most of them will persistently decrease in future at pixels scales, which could be mainly caused by the land use change. Comparing the habitat conditions, we found the lower canopy density and water stress could increase the CUE in the same ecosystem, which indicates the plant could increase their efficiency of transforming carbon from the atmosphere to terrestrial biomass in adverse environment. Finally, the CUE significantly correlated to net primary productivity (NPP) and autotrophic respiration (Ra) in ecosystem processes, meanwhile water stress (lower precipitation) and heat stress (higher temperature) could increase the CUE, but the temperature has variable impacts in different ecosystem.
format	article
author	Lingtong Du Fei Gong Yijian Zeng Longlong Ma Chenglong Qiao Hongyue Wu
author_facet	Lingtong Du Fei Gong Yijian Zeng Longlong Ma Chenglong Qiao Hongyue Wu
author_sort	Lingtong Du
title	Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China
title_short	Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China
title_full	Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China
title_fullStr	Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China
title_full_unstemmed	Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China
title_sort	carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: a case in ningxia province, northwest china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/6cf62ce0115445dbb0542362af4a6471
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Carbon use efficiency of terrestrial ecosystems in desert/grassland biome transition zone: A case in Ningxia province, northwest China

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