干旱区生态环境知识资源中心(Arid): Sustainability of Groundwater for Irrigation Purposes in Semi-arid Parts of Namibia

Arid

DOI	10.3389/frwa.2021.767496
	Sustainability of Groundwater for Irrigation Purposes in Semi-arid Parts of Namibia
	Amwele, Hilma Rantilla; Kgabi, Nnenesi Anna; Kandjibi, Liisa Indileni
通讯作者	Amwele, HR (corresponding author), Namibia Univ Sci & Technol, Dept Agr & Nat Resources Sci, Windhoek, Namibia.
来源期刊	FRONTIERS IN WATER
EISSN	2624-9375
出版年	2021
卷号	3
英文摘要	The groundwater quality data from 1,137 boreholes in 10 regions of Namibia were assessed for sodium adsorption ratio (SAR), Kelly's ratio (KR), sodium percentage (Na%), magnesium adsorption ratio (MAR), total hardness (TH), soluble sodium percentage (SSP), potential salinity (PS), electrical conductivity (EC), and total dissolved solids (TDS) to determine the suitability for the irrigation. The groundwater was classified as follows: all the regions' groundwater shows the TH as very hard water of >4.6 meq/l, PS as not suitable for irrigation (>3 meq/l), and EC as very highly (0.75-2.25 dS/m). However, Na%: 10% of regions have doubtful water (>80%), MAR: 30% of regions are not recommended for irrigation (>50 meq/l), and TDS: 90% of the regions have slightly moderate (450-2,000 mg/l) and 10% have groundwater that is unsuitable for agricultural purposes (>2,000 mg/l). The unsuitability of groundwater for irrigation could be due to higher concentrations of K+, Mg2+, Ca2+, and Cl- that has exceeded the FAO guideline for irrigation. Some groundwater qualities had inverse classification such as SAR all regions have excellent groundwater (<10 meq/l), KR: 90% of regions have safe water (<1 meq/l), Na%: 50% of regions have good groundwater (20-40%), 40% of the regions have permissible water (40-80%), and MAR: +70% of region's water is recommended for irrigation (<50 meq/l).
英文关键词	groundwater irrigation suitability for irrigation water quality salinity
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000732271600001
WOS关键词	WATER-QUALITY ASSESSMENT ; INDEX ; RIVER
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/2XILL650/374363
作者单位	[Amwele, Hilma Rantilla; Kandjibi, Liisa Indileni] Namibia Univ Sci & Technol, Dept Agr & Nat Resources Sci, Windhoek, Namibia; [Kgabi, Nnenesi Anna] North West Univ, Unit Environm Sci & Management, Potchefstroom, South Africa
推荐引用方式 GB/T 7714	Amwele, Hilma Rantilla,Kgabi, Nnenesi Anna,Kandjibi, Liisa Indileni. Sustainability of Groundwater for Irrigation Purposes in Semi-arid Parts of Namibia[J],2021,3.
APA	Amwele, Hilma Rantilla,Kgabi, Nnenesi Anna,&Kandjibi, Liisa Indileni.(2021).Sustainability of Groundwater for Irrigation Purposes in Semi-arid Parts of Namibia.FRONTIERS IN WATER,3.
MLA	Amwele, Hilma Rantilla,et al."Sustainability of Groundwater for Irrigation Purposes in Semi-arid Parts of Namibia".FRONTIERS IN WATER 3(2021).