干旱区生态环境知识资源中心(Arid): Using the water balance approach to understand pool dynamics along non-perennial rivers in the semi-arid areas of South Africa

Arid

DOI	10.1016/j.ejrh.2022.101244
	Using the water balance approach to understand pool dynamics along non-perennial rivers in the semi-arid areas of South Africa
	Maswanganye, Sagwati E.; Dube, Timothy; Jovanovic, Nebo; Kapangaziwiri, Evison; Mazvimavi, Dominic
通讯作者	Maswanganye, SE
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2022
卷号	44
英文摘要	Study region: The Touws River in the Klein Karoo region of South Africa Study focus: This study sought to improve the understanding of pool dynamics along non-perennial rivers (NPRs) by utilising the water balance approach to assess the water fluxes that influence pool dynamics in the Touws River. The water balance model made use of various in-situ and satellite-derived data.New hydrological insights: The analysis of the water losses from the pool showed that most of the water was lost through evaporation. The interaction between the pool and groundwater is dependent on the water levels, as the pool loses water to the subsurface up to a certain depth then it starts gaining. When the Wolverfontein 2 pool is full, it can retained water for approximately 258 days without having a surface water inflow. A water balance model was established, and it simulated the water levels with a high correlation of 0.9. This model was also evaluated in the neighbouring pools, and while it simulated the water levels of the upstream pool well, this was not the case for the downstream pool. When remote sensing-derived rainfall and evaporation data were used in the model, the simulated water levels had a slightly lower correlation of 0.7 with the observed water levels. Overall, the remotely sensing-based monthly fluxes estimates could not provide the detailed pool information that was required for the water balance. Errors may have arisen, or they may have been inherited, from any of the three remotely-sensed parameters, namely, the surface area, the rainfall or the evaporation. Although remote sensing did not provide detailed information, it is worth noting that it provides baseline information on the pool dy-namics. Overall, this work underscores the relevance of multisource data and the water balance, it helps to better understand the pool dynamics and it will help with the better management of NPRs.
英文关键词	Dryland areas Pool hydrodynamics Hydrological water balance River ponds Temporary Rivers Water budget
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000877214900001
WOS关键词	LAKE ; EVAPOTRANSPIRATION ; EVAPORATION ; LEVEL ; REFUGIA ; FISH ; CAPE
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393531
推荐引用方式 GB/T 7714	Maswanganye, Sagwati E.,Dube, Timothy,Jovanovic, Nebo,et al. Using the water balance approach to understand pool dynamics along non-perennial rivers in the semi-arid areas of South Africa[J],2022,44.
APA	Maswanganye, Sagwati E.,Dube, Timothy,Jovanovic, Nebo,Kapangaziwiri, Evison,&Mazvimavi, Dominic.(2022).Using the water balance approach to understand pool dynamics along non-perennial rivers in the semi-arid areas of South Africa.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,44.
MLA	Maswanganye, Sagwati E.,et al."Using the water balance approach to understand pool dynamics along non-perennial rivers in the semi-arid areas of South Africa".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 44(2022).