Hydrochemical Characterization of Lentic and Lotic Environments of Ramaroshan Area, Sudurpaschim Province, Nepal

Pant, Ramesh Raj; Dangol, Alina; Chalaune, Tarka Bahadur; Sharma, Jiban; Thapa, Bina; Thapa, Lal B; Bishwakarma, Kiran

doi:10.3126/gjn.v15i01.42888

Cited by 5 publications

(8 citation statements)

References 31 publications

(46 reference statements)

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“…These lakes fall in the category of lacustrine [2] wetlands. Our observations comply with previous studies [21,22] that the Ghodaghodi water is used for irrigation purposes and local people consume fish products from the lake. Whereas, the outlet of Rara is called Khatyad Khola, which is also used for irrigation purposes by locals.…”

Section: Introductionsupporting

confidence: 93%

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Index Based Irrigation Suitability of Ramsar Sites (Rara and Ghodaghodi) in Western Nepal

Bhatta,

Gurung,

Joshi

et al. 2024

J. Nepal Chem. Soc.

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The present study highlights the water quality of two important Ramsar sites of western Nepal (Ghodaghodi and Rara lakes) in terms of irrigation use. Based on land use patterns and location accessibility, 13 sites in Ghodaghodi and 18 in Rara were considered and the samplings were performed in the pre-monsoon and post-monsoon seasons. Different physicochemical parameters such as pH, electrical conductivity (EC), total dissolved solids (TDS), total hardness (TH), major cations, and anion (Na+, K+, Ca2+, Mg2+, and HCO3-) were measured. The calculated indices were permeability index percentage (PI), sodium percentage (%Na), sodium adsorption ratio (SAR), magnesium hazard ratio (MAR), residual sodium carbonate (RSC), and Kelly’s index (KI). Major ions were analyzed using ion chromatography including field and procedural blanks to maintain quality standards, whereas on-site parameters were measured by using standard multi-meter probes. The studied irrigation water quality parameters (pH, EC, TDS, TH) and indices (PI, MAR, RSC, KI, SAR, and %Na) fall within the permissible limit in both lakes, indicating the suitability of such water for irrigation purposes. In addition, based on the SAR vs. EC plot, all the results from both lakes fall in the S1 category, signifying low sodium hazard. Concerning EC, most of the samples demonstrate the C1 category and few are in the C2 category (in Ghodaghodi) whereas the C1 category predominates for Rara. According to IWQI, all water samples in both lakes fall in the class I category, which supports the results of other indices indicating the suitability of water for irrigation purposes.

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Section: Introductionsupporting

confidence: 93%

“…study related to mercury pollution in fishes from Lake Phewa [18]; study of major cations and anions in the Nepalese rivers and their water quality [19,20].…”

Section: Introductionmentioning

confidence: 99%

Index Based Irrigation Suitability of Ramsar Sites (Rara and Ghodaghodi) in Western Nepal

Bhatta,

Gurung,

Joshi

et al. 2024

J. Nepal Chem. Soc.

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“…In natural waters, TDS is a function of minerals, nutrients and major ions and is resulted from weathering or dissolution of soil and rocks (Singh et al, 2013) and anthropogenic sources such as agrochemicals (Kundu, 2012). Similar TDS values have been observed from the Seti River and the Marshyangdi River (Bishwakarma et al, 2022;Pant et al, 2022;Sharma, 1977;WHO, 2011) and elsewhere (Joshi et al, 2009).…”

Section: Total Dissolved Solids (Tds)supporting

confidence: 75%

Evaluation of multiple water quality indices for irrigation purposes for the Bheri and Babai River systems, Nepal

et al. 2022

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The main purpose of this study was to assess the irrigation water quality of the Bheri and Babai Rivers and their tributaries prior to the proposed inter-basin water transfer (IBWT) in western Nepal. A total of 40 water samples from five sites in each river system were collected from January (winter), March-April (spring), June (summer) and October (autumn) in 2018; and some important irrigation water quality parameters were assessed. All the assessed parameters viz. pH, Total Dissolved Solids (TDS), Total Hardness (TH), permeability index (PI), percent sodium (%Na), sodium adsorption ratio (SAR), magnesium hazard (MAR), residual sodium carbonate (RSC), Kelly’s index (KI) from all sites were observed suitable for irrigation. USSL diagram showed that water from both the rivers belongs to the S1-C2 category indicating good for irrigation purposes. The Wilcox diagram revealed that all samples fall into the excellent to a good class. Based on Irrigation Water Quality Index (IWQI), 3 sampling sites fall in the high restriction category and 7 sampling sites fall in the moderate restriction category, indicating anthropogenic impacts on irrigation water quality at some sites.

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“…Due to variations in altitude, the area is divided into four climate types: tropical, subtropical, temperate and alpine and temperatures range from 5 to 30 °C. The rainy season generates about 1,794 mm (Pant et al ., 2022). Over 61% of the population conducts subsistence agriculture and small-scale livestock husbandry in the middle mountain regions.…”

Section: Methodsmentioning

confidence: 99%

Addressing the impacts of climate change on agricultural adaptation strategies: a case study in Nepal

Charoenratana,

Kharel

2024

MEQ

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PurposeAs climate change increasingly affects rural food production, there is an urgent need to adopt agricultural adaptation strategies. Because the agricultural sector in Nepal is one of the most vulnerable to the effects of climate change, the adaptation strategies of household farmers in rural areas are crucial. This study aims to address the impacts of agricultural climate change adaptation strategies in Nepal. The research empirically analyzed climate hazards, adaptation strategies and local adaptation plans in Mangalsen Municipality, Achham District, Sudurpashchim Province, Nepal.Design/methodology/approachThis study used a purposive sampling of household lists, categorized as resource-rich, resource-poor and intermediate households. The analysis used primary data from 110 household surveys conducted among six focus groups and 30 informants were selected for interviews through purposive random sampling.FindingsClimate change significantly impacts rainfall patterns and temperature, decreasing agriculture productivity and increasing household vulnerability. To overcome these negative impacts, it is crucial to implement measures such as efficient management of farms and livestock. A comprehensive analysis of Nepalese farmers' adaptation strategies to climate change has been conducted, revealing important insights into their coping mechanisms. By examining the correlation between farmers' strategies and the role of the local government, practical policies can be developed for farmers at the local level.Originality/valueThis study represents a significant breakthrough in the authors' understanding of this issue within the context of Nepal. It has been conclusively demonstrated that securing land tenure or land security and adopting appropriate agricultural methods, such as agroforestry, can be instrumental in enabling Nepalese households to cope with the effects of climate change effectively.

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Hydrochemical Characterization of Lentic and Lotic Environments of Ramaroshan Area, Sudurpaschim Province, Nepal

Cited by 5 publications

References 31 publications

Index Based Irrigation Suitability of Ramsar Sites (Rara and Ghodaghodi) in Western Nepal

Index Based Irrigation Suitability of Ramsar Sites (Rara and Ghodaghodi) in Western Nepal

Evaluation of multiple water quality indices for irrigation purposes for the Bheri and Babai River systems, Nepal

Addressing the impacts of climate change on agricultural adaptation strategies: a case study in Nepal

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