Influence of different geographical factors on carbon sink functions in the Pearl River Delta

Abstract This study analyzed carbon fixation across different land use types in the Pearl River Delta to identify the influence of different geographical factors on carbon fixation ability. The methodology was based on interpreting land use data from TM imagery, MODIS13Q1 data, and climate data, usi...

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Autores principales:	Qian Xu, Yuxiang Dong, Ren Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/961c03e1f83a473e8c429d7a67271058
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spelling	oai:doaj.org-article:961c03e1f83a473e8c429d7a672710582021-12-02T15:06:27ZInfluence of different geographical factors on carbon sink functions in the Pearl River Delta10.1038/s41598-017-00158-z2045-2322https://doaj.org/article/961c03e1f83a473e8c429d7a672710582017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00158-zhttps://doaj.org/toc/2045-2322Abstract This study analyzed carbon fixation across different land use types in the Pearl River Delta to identify the influence of different geographical factors on carbon fixation ability. The methodology was based on interpreting land use data from TM imagery, MODIS13Q1 data, and climate data, using the improved CASA and GeogDetector models. The results show that: (1) From 2000 to 2013, the total carbon sink increased slightly, from 15.58 × 106 t to 17.52 × 106 t, being spatially low at the center and increasing outwards; (2) Proxy variables (topography and landform characteristics), influencing urbanization, significantly affect the carbon sink function of the Pearl River Delta region. The proportion of urban and other construction land showed increasing effect on the regional carbon sink each year. However, the spatial structure of land in the study area changed from complex to simple, with enhanced stability; consequently, the influence of landscape characteristics (landscape dominance and landscape perimeter area fractal dimension) on the regional carbon sink gradually decreased; (3) The influence of the same factors differed with different land use types. Slope and altitude were found to have the greatest influence on the carbon sink of cultivated land, while landscape perimeter area fractal dimension more significantly affected the forest carbon sink.Qian XuYuxiang DongRen YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Qian Xu Yuxiang Dong Ren Yang Influence of different geographical factors on carbon sink functions in the Pearl River Delta
description	Abstract This study analyzed carbon fixation across different land use types in the Pearl River Delta to identify the influence of different geographical factors on carbon fixation ability. The methodology was based on interpreting land use data from TM imagery, MODIS13Q1 data, and climate data, using the improved CASA and GeogDetector models. The results show that: (1) From 2000 to 2013, the total carbon sink increased slightly, from 15.58 × 106 t to 17.52 × 106 t, being spatially low at the center and increasing outwards; (2) Proxy variables (topography and landform characteristics), influencing urbanization, significantly affect the carbon sink function of the Pearl River Delta region. The proportion of urban and other construction land showed increasing effect on the regional carbon sink each year. However, the spatial structure of land in the study area changed from complex to simple, with enhanced stability; consequently, the influence of landscape characteristics (landscape dominance and landscape perimeter area fractal dimension) on the regional carbon sink gradually decreased; (3) The influence of the same factors differed with different land use types. Slope and altitude were found to have the greatest influence on the carbon sink of cultivated land, while landscape perimeter area fractal dimension more significantly affected the forest carbon sink.
format	article
author	Qian Xu Yuxiang Dong Ren Yang
author_facet	Qian Xu Yuxiang Dong Ren Yang
author_sort	Qian Xu
title	Influence of different geographical factors on carbon sink functions in the Pearl River Delta
title_short	Influence of different geographical factors on carbon sink functions in the Pearl River Delta
title_full	Influence of different geographical factors on carbon sink functions in the Pearl River Delta
title_fullStr	Influence of different geographical factors on carbon sink functions in the Pearl River Delta
title_full_unstemmed	Influence of different geographical factors on carbon sink functions in the Pearl River Delta
title_sort	influence of different geographical factors on carbon sink functions in the pearl river delta
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/961c03e1f83a473e8c429d7a67271058
work_keys_str_mv	AT qianxu influenceofdifferentgeographicalfactorsoncarbonsinkfunctionsinthepearlriverdelta AT yuxiangdong influenceofdifferentgeographicalfactorsoncarbonsinkfunctionsinthepearlriverdelta AT renyang influenceofdifferentgeographicalfactorsoncarbonsinkfunctionsinthepearlriverdelta
_version_	1718388464935763968

Influence of different geographical factors on carbon sink functions in the Pearl River Delta

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