scholarly journals Land use/cover mapping and assessing the impact of solid waste on water quality of Dal Lake catchment using remote sensing and GIS (Srinagar, India)

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Junaid Qadir ◽  
Perminder Singh
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Land Use ◽  
Solid Waste ◽  
Remote Sensing And Gis ◽  
Dal Lake ◽  
Lake Catchment ◽  
The Impact

An Investigation on Sudden Change in Water Quality of Brahmaputra River Using Remote Sensing and GIS

2020 ◽  
Vol 43 (7) ◽  
pp. 619-623
Author(s):  
Thota Sivasankar ◽  
Suranjana B. Borah ◽  
Ranjit Das ◽  
P. L. N. Raju
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Sudden Change ◽  
Remote Sensing And Gis ◽  
Brahmaputra River

scholarly journals Avaliação da influência do uso e cobertura da terra na qualidade das águas superficiais da bacia hidrográfica do rio Pirapozinho (SP) (Evaluation of the effects of land use and occupation on superficial water quality of the hydrographic basin of the Pirapozinho river (SP))

2019 ◽  
Vol 12 (3) ◽  
pp. 738
Author(s):  
Bruno Magro Rodrigues ◽  
Lucas Prado Osco ◽  
Patricia Alexandra Antunes ◽  
Ana Paula Marques Ramos
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Sustainable Management ◽  
Hydrographic Basin ◽  
Crop Fields ◽  
Management Actions ◽  
Production Water ◽  
The Impact ◽  
Effects Of Land Use

A ocupação extensiva e, por vezes, indevida do solo pode resultar em uma série de problemas ambientais que aceleram a degradação de uma bacia hidrográfica, com consequências diretas na qualidade dos seus recursos hídricos. Esse trabalho avalia o impacto do uso e cobertura da terra em parâmetros quantitativos e de qualidade das águas superficiais da bacia hidrográfica do rio Pirapozinho. A produção cartográfica consistiu de mapa de uso e cobertura da terra, declividade, rede de drenagem, mapa de área de preservação permanente e mapa de Índice de Qualidade da Água (IQA). Tanto a coleta quanto as análises das águas superficiais da bacia foram desenvolvidas seguindo os procedimentos do Standard Methods. Os resultados das análises foram comparados com os valores de referência CONAMA, n° 357/05, alterada pela Resolução 410/2009 e pela 430/2011, sendo os padrões estabelecidos para rios de classe 2, mesma classe que se enquadra os corpos hídricos inseridos na bacia em estudo. Conclui-se que há um desequilíbrio ambiental na bacia do rio Pirapozinho. O mapa de uso e cobertura aponta que aproximadamente 90% da área da bacia encontra-se ocupada por pastagem e culturas. Outro aspecto é que mais de 84% da área de preservação permanente encontra-se desprovida de vegetação arbórea. Embora o mapa do IQA revele que a água da bacia possa ser classificada como boa (IQA entre 52 e 79) predominantemente, as análises laboratoriais apontam que há pontos na área com contaminação. Isto pode ser atribuído a atividades industriais e agropastoris desenvolvidas na bacia em estudo. Recomenda-se ações de manejo sustentável na bacia do rio Pirapozinho para a recuperação dos seus recursos naturais. A B S T R A C TExtensive and unduly occupation of soil may result in several environmental problems those contribute to accelerate the degradation of a hydrographic basin bringing diretly consequences to quality of its water resources. This paper evaluates the impact of land use and occupation on quantitative parameters and of superficial waters quality of the hydrographic basin of the Pirapozinho river. The cartographic products designed consisted of land use and occupation map, declivitity map, drainage network map, permanent preservation area map and map of Water Quality Index (WQI) of hydrographic basin. Both collection and analysis of the superficial waters samples were developed following the Standard Method procedure. The results of the laboratorial analyses were compared with the reference values at CONAMA 357/05 and 430/11 resolutions. We conclude that there is an environmental disequilibrium at the hydrographic basin of the Pirapozinho river. The land use and occupation map shows that approximately 90% of the area of the basin is occupied by pasture and crop fields. Other finding is that there is no arboreal vegetation in 84% of the permanent preservation area of the hydrographic basin. Although the WQI map revels that water of the basin can be classified as good (WQI among 52 and 79) predominately, the laboratorial analyses point out taht there is some points in area with contamination of water. This may be related to the industrial and agricultural activities performed in the area. We recommend sustainable management actions in the Pirapozinho river basin to recovery of its natural resources.Keywords: Cartographic production; water quality; environmental analysis; hydrographic basin.

scholarly journals Assessing the impact of land use and land cover dynamics on water quality of Dal Lake, NW Himalaya, India

2020 ◽  
Vol 10 (10) ◽  
Author(s):  
Ishtiyaq Ahmad Rather ◽  
Abdul Qayoom Dar
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Land Cover ◽  
Water Body ◽  
Anthropogenic Activities ◽  
Well Being ◽  
Water Bodies ◽  
Conservation Strategy ◽  
Dal Lake

Abstract A dynamic process like land use, if anthropogenically unsustainable, adversely affects the well-being of the land system. Worldwide, water bodies are facing imminent threat due to unsustainable anthropogenic activities. Water quality and ecology are the two characteristics of water bodies, if not preserved, shall have a direct consequence on the well-being of the human systems. Hence it is essential to understand the causes and consequences of the deteriorating water body systems. The condition is particularly grim in Himalayan water body ecosystems, where unplanned and unchecked urbanization has threatened their very existence. In the present study, the dynamics of land use/land cover (LULC) and its impact on the water quality of Dal Lake in Kashmir Himalaya, India has been assessed. We carried out a detailed study wherein changing LULC is analyzed against the deteriorating trophic status of the Dal Lake using time-series of satellite imagery of the lake’s catchment and its water quality data. Results indicated that the water quality of Dal Lake has remarkably deteriorated due to increased nutrient and sediment loads from the catchment, attributed to significant anthropogenic activities in the catchment. Due to unprecedented LULC changes in the catchment, the forest class shows a significantly negative change since the last four decades (1980–2018), corroborating with the ongoing deterioration of physicochemical characteristics of the lake. The analysis shows an increase in all the agents of eutrophication, such as NO3–N, TP, and COD, from 1990 to 2018. The decrease in forest, agriculture, and floating gardens was observed to show a significant negative correlation with the increase in the decadal average values of the COD, NO3–N, and TP for the same corresponding period. Similarly, a positive correlation was found between the increase in built-up, aquatic vegetation, bare surfaces, and these water quality parameters, establishing a strong relationship between the deteriorating condition of the lake and changing LULC. Our findings indicate that changing LULC of the lake’s catchment is one of the critical factors that has significantly contributed toward the deteriorating ecology and water quality of the Dal Lake. This study shall contribute toward the development of the robust conservation strategy in order to save this urban lake from its untimely death.

scholarly journals The impact of land use on the water quality of foothill microcatchment areas

2008 ◽  
Vol 40 (1) ◽  
pp. 27-37
Author(s):  
Andrzej Misztal ◽  
Marcin Kuczera
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Water Samples ◽  
Negative Influence ◽  
Rural Settlements ◽  
Quality Of Water ◽  
Catchment Areas ◽  
Forested Areas ◽  
The Impact

The impact of land use on the water quality of foothill microcatchment areas The impact of land use on the water quality of foothill microcatchment areas. In this paper a comparison is made between the impact of land use methods on the quality of water in the streams which drain various catchment areas. For this purpose three microcatchments were selected which are located in agricultural, rural settlements, and forested areas. Water samples were physically and chemically analysed in order to determine: nitrates, nitrites, ammonia, phosphates, sulphates, chlorides, calcium, magnesium, dissolved oxygen, reaction and conductivity. The above studies were conducted in the 2006 and 2007. Our analysis of the collected materials allows us to affirm that land use methods have a significant impact on the water quality of the streams which drain the area. Rural settlement has the most negative influence on the water quality, followed by typical agricultural use. Based on the direct quality evaluations of single water samples, it has been found that only water from forested areas can be qualified as belonging to the 1st cleanness class.

scholarly journals THE ASSESSMENT OF TECK'S CASTLE PROJECT BASED ON FIVE VALUED ECOSYSTEM COMPONENTS

InterConf ◽  
2021 ◽  
pp. 413-421
Author(s):  
Jingyao Su ◽  
Simon Courtenay
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Surface Water ◽  
Fish Habitat ◽  
Surface Water Quality ◽  
Protective Equipment ◽  
Quality Model ◽  
Treatment Facilities ◽  
The Impact

Teck's Castle Project is the largest coal mine project to be mined in Canada. This article is an environmental assessment of Teck's Castle Project based on five valued ecosystem components (VECs) including: Surface Water Quality, Fish and Fish habitat, Vegetation, Local Employment, and Land Use. I proposed to use a surface water quality model to detect the degree of pollution of the water quality of the surrounding rivers and use an economic multiplier to measure the impact on local economic employment. Through research, I found that the water treatment facilities used by Teck Coal Limited can effectively alleviate the impact of the project on the water quality of the surrounding rivers, and I recommended that Teck Coal Limited wear protective equipment to protect their health when working.

Water quality in two Icelandic rivers: the influence of impoundment, agriculture, glaciation and permafrost

2014 ◽  
Vol 46 (3) ◽  
pp. 429-445 ◽  
Author(s):  
Nicholas Jones ◽  
Chris Parker
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Agricultural Land ◽  
Anthropogenic Factors ◽  
Agricultural Land Use ◽  
Significant Drop ◽  
Spatial And Temporal Scales ◽  
Permafrost Soils ◽  
The Impact

The water quality of Icelandic rivers is controlled by a number of natural and anthropogenic factors interacting at complex spatial and temporal scales. This article presents the findings of a study into the water quality of two Icelandic rivers; the Blanda and the Skjálfandafljót. The study investigated the impact of three of the factors influencing water quality in these rivers: impoundment for hydro-electric power generation; agricultural land use; and the presence of glacial and periglacial areas. The results indicate that impoundment within a reservoir was responsible for a significant reduction in turbidity and a significant drop in aluminium concentrations as the reservoir acted as a sediment trap and chemical sink. Agricultural land use was found to have no significant effect on the nitrate or phosphate concentrations. Increasing glacial influence was found to be associated with increased turbidity but decreased total dissolved solids. Finally, the presence of permafrost soils in the periglacial highlands of the Blanda was positively associated with aluminium concentrations.

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