Spatial Variations and Influencing Factors of River Networks in River Basins of China

Analysis of the spatial variations in river networks and the related influencing factors is crucial for the management and protection of basins. To gain insight into the spatial variations and influencing factors of river networks between large basins, in this study, three river basins from north to...

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Autores principales:	Yuanhuan Zheng, Chunxue Yu, Huabin Zhou, Jiannan Xiao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	river network characteristics drainage density water surface ratio drainage accumulation threshold Medicine R
Acceso en línea:	https://doaj.org/article/9ed42c1c59d449b199de8284c078b503
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spelling	oai:doaj.org-article:9ed42c1c59d449b199de8284c078b5032021-11-25T17:49:24ZSpatial Variations and Influencing Factors of River Networks in River Basins of China10.3390/ijerph1822119101660-46011661-7827https://doaj.org/article/9ed42c1c59d449b199de8284c078b5032021-11-01T00:00:00Zhttps://www.mdpi.com/1660-4601/18/22/11910https://doaj.org/toc/1661-7827https://doaj.org/toc/1660-4601Analysis of the spatial variations in river networks and the related influencing factors is crucial for the management and protection of basins. To gain insight into the spatial variations and influencing factors of river networks between large basins, in this study, three river basins from north to south in China (Songhua River Basin, Yellow River Basin and Pearl River Basin) were selected for investigation. First, based on a digital elevation model, different river networks with six drainage accumulation thresholds of three basins were extracted using ArcGIS. The optimal networks were determined through fitting the relationship between the accumulation threshold and related drainage density. Then, we used two indicators, drainage density and water surface ratio, to characterize the spatial variations of three basins. Finally, Pearson’s correlation coefficients were calculated between those two indicators and natural/human influencing factors. The results showed that drainage density and water surface ratio decreased from north to south in China and were negatively correlated with natural/human influencing factors. Drainage density was more influenced by natural factors than by human factors, while the opposite was true for water surface ratio. These findings may provide some basis for the management and protection of the river network.Yuanhuan ZhengChunxue YuHuabin ZhouJiannan XiaoMDPI AGarticleriver network characteristicsdrainage densitywater surface ratiodrainage accumulation thresholdMedicineRENInternational Journal of Environmental Research and Public Health, Vol 18, Iss 11910, p 11910 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	river network characteristics drainage density water surface ratio drainage accumulation threshold Medicine R
spellingShingle	river network characteristics drainage density water surface ratio drainage accumulation threshold Medicine R Yuanhuan Zheng Chunxue Yu Huabin Zhou Jiannan Xiao Spatial Variations and Influencing Factors of River Networks in River Basins of China
description	Analysis of the spatial variations in river networks and the related influencing factors is crucial for the management and protection of basins. To gain insight into the spatial variations and influencing factors of river networks between large basins, in this study, three river basins from north to south in China (Songhua River Basin, Yellow River Basin and Pearl River Basin) were selected for investigation. First, based on a digital elevation model, different river networks with six drainage accumulation thresholds of three basins were extracted using ArcGIS. The optimal networks were determined through fitting the relationship between the accumulation threshold and related drainage density. Then, we used two indicators, drainage density and water surface ratio, to characterize the spatial variations of three basins. Finally, Pearson’s correlation coefficients were calculated between those two indicators and natural/human influencing factors. The results showed that drainage density and water surface ratio decreased from north to south in China and were negatively correlated with natural/human influencing factors. Drainage density was more influenced by natural factors than by human factors, while the opposite was true for water surface ratio. These findings may provide some basis for the management and protection of the river network.
format	article
author	Yuanhuan Zheng Chunxue Yu Huabin Zhou Jiannan Xiao
author_facet	Yuanhuan Zheng Chunxue Yu Huabin Zhou Jiannan Xiao
author_sort	Yuanhuan Zheng
title	Spatial Variations and Influencing Factors of River Networks in River Basins of China
title_short	Spatial Variations and Influencing Factors of River Networks in River Basins of China
title_full	Spatial Variations and Influencing Factors of River Networks in River Basins of China
title_fullStr	Spatial Variations and Influencing Factors of River Networks in River Basins of China
title_full_unstemmed	Spatial Variations and Influencing Factors of River Networks in River Basins of China
title_sort	spatial variations and influencing factors of river networks in river basins of china
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9ed42c1c59d449b199de8284c078b503
work_keys_str_mv	AT yuanhuanzheng spatialvariationsandinfluencingfactorsofrivernetworksinriverbasinsofchina AT chunxueyu spatialvariationsandinfluencingfactorsofrivernetworksinriverbasinsofchina AT huabinzhou spatialvariationsandinfluencingfactorsofrivernetworksinriverbasinsofchina AT jiannanxiao spatialvariationsandinfluencingfactorsofrivernetworksinriverbasinsofchina
_version_	1718412002127249408

Spatial Variations and Influencing Factors of River Networks in River Basins of China

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