LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China

The Three-North Shelter Forest Program (TNSFP) region of China is an important ecological region covering more than 42.4% of China’s land area. Several ecological restoration projects have been implemented in this region, but evaluation work is relatively limited partly due to the selection of suita...

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Autores principales:	Yungang Hu, Huan Li, Dan Wu, Wei Chen, Xiang Zhao, Miaole Hou, Aijia Li, Yujiao Zhu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Three-North Shelter Forest Program LAI Vegetation Dynamics Ecological Restoration Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/967eaf5ae0474054b17e942298c06285
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id	oai:doaj.org-article:967eaf5ae0474054b17e942298c06285
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spelling	oai:doaj.org-article:967eaf5ae0474054b17e942298c062852021-12-01T04:29:42ZLAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China1470-160X10.1016/j.ecolind.2020.106932https://doaj.org/article/967eaf5ae0474054b17e942298c062852021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20308712https://doaj.org/toc/1470-160XThe Three-North Shelter Forest Program (TNSFP) region of China is an important ecological region covering more than 42.4% of China’s land area. Several ecological restoration projects have been implemented in this region, but evaluation work is relatively limited partly due to the selection of suitable remote sensing products. In this study, leaf area index is proposed as a suitable indicator to evaluate the ecological restoration situation as it is an indicator reflects the growth of green vegetations. The Global Land Surface Satellite (GLASS) LAI dataset and land cover dataset from 2000 to 2015 were adopted and analyzed in this study. The forest cover area slightly increased, while the grassland area decreased. Although large-scale forestation movements were carried out across the entire TNSFP region, the forest growth conditions mainly improved in regions with an annual precipitation greater than 400 mm. Furthermore, LAI-precipitation correlations were very high (r greater than 0.6) in the regions across 400 mm isohyets, but lower (r < 0.4) far away from 400 mm isohyets. In relatively arid regions, forest growth did not show an obvious increase trend and sometimes a decrease trend. The increase in the LAI of these regions was mainly due to the restoration of grassland. Therefore, although LAI in most of the TNSFP region showed increasing trends, it is still not sufficient to state that these trends were caused by forestation projects in China.Yungang HuHuan LiDan WuWei ChenXiang ZhaoMiaole HouAijia LiYujiao ZhuElsevierarticleThree-North Shelter Forest ProgramLAIVegetation DynamicsEcological RestorationEcologyQH540-549.5ENEcological Indicators, Vol 120, Iss , Pp 106932- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Three-North Shelter Forest Program LAI Vegetation Dynamics Ecological Restoration Ecology QH540-549.5
spellingShingle	Three-North Shelter Forest Program LAI Vegetation Dynamics Ecological Restoration Ecology QH540-549.5 Yungang Hu Huan Li Dan Wu Wei Chen Xiang Zhao Miaole Hou Aijia Li Yujiao Zhu LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China
description	The Three-North Shelter Forest Program (TNSFP) region of China is an important ecological region covering more than 42.4% of China’s land area. Several ecological restoration projects have been implemented in this region, but evaluation work is relatively limited partly due to the selection of suitable remote sensing products. In this study, leaf area index is proposed as a suitable indicator to evaluate the ecological restoration situation as it is an indicator reflects the growth of green vegetations. The Global Land Surface Satellite (GLASS) LAI dataset and land cover dataset from 2000 to 2015 were adopted and analyzed in this study. The forest cover area slightly increased, while the grassland area decreased. Although large-scale forestation movements were carried out across the entire TNSFP region, the forest growth conditions mainly improved in regions with an annual precipitation greater than 400 mm. Furthermore, LAI-precipitation correlations were very high (r greater than 0.6) in the regions across 400 mm isohyets, but lower (r < 0.4) far away from 400 mm isohyets. In relatively arid regions, forest growth did not show an obvious increase trend and sometimes a decrease trend. The increase in the LAI of these regions was mainly due to the restoration of grassland. Therefore, although LAI in most of the TNSFP region showed increasing trends, it is still not sufficient to state that these trends were caused by forestation projects in China.
format	article
author	Yungang Hu Huan Li Dan Wu Wei Chen Xiang Zhao Miaole Hou Aijia Li Yujiao Zhu
author_facet	Yungang Hu Huan Li Dan Wu Wei Chen Xiang Zhao Miaole Hou Aijia Li Yujiao Zhu
author_sort	Yungang Hu
title	LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China
title_short	LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China
title_full	LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China
title_fullStr	LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China
title_full_unstemmed	LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China
title_sort	lai-indicated vegetation dynamic in ecologically fragile region: a case study in the three-north shelter forest program region of china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/967eaf5ae0474054b17e942298c06285
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LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China

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