scholarly journals Spatial Variation of Dissolved Nutrient and Heavy Metal Concentrations in River Bed Sediments as Influenced by Land-Use Patterns in Ogun-Osun River Basin, Nigeria

2013 ◽  
Vol 04 (11) ◽  
pp. 1203-1212 ◽  
Author(s):  
Adebayo Oke ◽  
Abimbola Sangodoyin ◽  
Kayode Are ◽  
Ayodele Adelana
Keyword(s):  
Heavy Metal ◽  
Land Use ◽  
Spatial Variation ◽  
River Basin ◽  
Land Use Patterns ◽  
Metal Concentrations ◽  
Bed Sediments ◽  
Heavy Metal Concentrations ◽  
Use Patterns ◽  
River Bed

scholarly journals The Impacts of Land Use Patterns on Water Quality in a Trans-Boundary River Basin in Northeast China Based on Eco-Functional Regionalization

2018 ◽  
Vol 15 (9) ◽  
pp. 1872 ◽  
Author(s):  
Peixuan Cheng ◽  
Fansheng Meng ◽  
Yeyao Wang ◽  
Lingsong Zhang ◽  
Qi Yang ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
River Basin ◽  
Natural Environment ◽  
Flow Region ◽  
High Flow ◽  
Land Use Patterns ◽  
Use Patterns ◽  
The Impact ◽  
Degraded Water Quality

The relationships between land use patterns and water quality in trans-boundary watersheds remain elusive due to the heterogeneous natural environment. We assess the impact of land use patterns on water quality at different eco-functional regions in the Songhua River basin during two hydrological seasons in 2016. The partial least square regression indicated that agricultural activities associated with most water quality pollutants in the region with a relative higher runoff depth and lower altitude. Intensive grazing had negative impacts on water quality in plain areas with low runoff depth. Forest was related negatively with degraded water quality in mountainous high flow region. Patch density and edge density had major impacts on water quality contaminants especially in mountainous high flow region; Contagion was related with non-point source pollutants in mountainous normal flow region; landscape shape index was an effective indicator for anions in some eco-regions in high flow season; Shannon’s diversity index contributed to degraded water quality in each eco-region, indicating the variation of landscape heterogeneity influenced water quality regardless of natural environment. The results provide a regional based approach of identifying the impact of land use patterns on water quality in order to improve water pollution control and land use management.

Sedimentation in the Reservoir of the Altenwoerth Hydropower Plant

1990 ◽  
Vol 22 (5) ◽  
pp. 173-180
Author(s):  
H. P. Nachtnebel ◽  
W. Summer ◽  
H. Mueller ◽  
B. Schwaighofer
Keyword(s):  
Heavy Metal ◽  
Grain Size ◽  
Longitudinal Section ◽  
Hydropower Plant ◽  
Sediment Layer ◽  
Stream Power ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Sludge Disposal ◽  
River Bed

This paper addresses two objectives. The first objective is to describe the sedimentation process in the reservoir of the hydropower scheme Altenwoerth. It is located on the Austrian part of the Danube about 60 km upstream from Vienna. Starting in 1976 the aggradation of the river bed has been monitored annually to estimate the sedimentation rate along a longitudinal section in the reservoir. Further, cores were taken over the whole sediment layer to analyse the grain size distribution, the bulk density, the mineralogic structure of the sediment and the heavy metal concentrations in the layer. It was found that the annual average sedimentation of suspended material amounts to 390 000 m3/a. The grain size of the samples vary from well sorted sands to poorly sorted, clay rich sediments. The heavy metal concentrations refer to the fraction less than 20 µ m. In comparison to the guidelines for sewage sludge disposal the observed heavy metal content of zn and Pb is slightly above the respective limits. The second objective is to demonstrate the application of a one dimensional sedimentation model which describes the accumulation over the operation period from 1976 to 1985. The model is related to the unit stream power concept and is based on the transport capacity equation of Engelund and Hansen. The model yields satisfying results for both the quantity of the sediment and also its gradation.

Multiscale delineation of landscape planning units based on spatial variation of land-use patterns in Galicia, NW Spain

2008 ◽  
Vol 5 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Emilio Díaz-Varela ◽  
Carlos José Álvarez-López ◽  
Manuel Francisco Marey-Pérez
Keyword(s):  
Land Use ◽  
Spatial Variation ◽  
Landscape Planning ◽  
Nw Spain ◽  
Land Use Patterns ◽  
Use Patterns

scholarly journals Socioeconomic characteristics of communities utilizing land in forest areas in the Maros Watershed

2021 ◽  
Vol 886 (1) ◽  
pp. 012028
Author(s):  
Chaerunnisa Ekasari ◽  
Roland Barkey ◽  
Chairil A ◽  
Munajat Nursaputra ◽  
Septian Perdana Putra Pahar
Keyword(s):  
Land Use ◽  
River Basin ◽  
Forest Products ◽  
Forest Area ◽  
Land Use Patterns ◽  
Forest Protection ◽  
Dry Land ◽  
Area Function ◽  
Use Patterns

Abstract The community has used the land throughout the area without exception in the forest area. The function of forest areas also varies based on the biophysical conditions of a land. The Maros River Basin has a complex forest area function ranging from production forest, protection forest to conservation forest (National Park). In addition, the Maros watershed also has its own uniqueness in the form of a karst ecosystem and biodiversity. This requires information related to activities, and the role of forests for people who use land in forest areas to meet their daily needs. Based on this, this study aims to analyze land use patterns, and socio-economic characteristics of the people in the Maros River Basin. This analysis begins with spot image analysis, and land use interpretation. The second analysis conducts detailed observations of land use in the field based on the results of land use interpretations that indicate community activities in forest areas. The last analysis is the socio-economic conditions, and the influence of the role of the forest on the community in using land in the forest area. The results of the analysis show that each area function is dominated by land use patterns in the form of dry land mixed with shrubs, rice fields, plantations, plantation forests, and secondary forests. Land use in the form of dry land mixed with shrubs is used as seasonal crops such as corn and horticulture. The use of plantation land, the community gets results in the form of candlenut and coffee. The use of plantation forest land is used to obtain pine resin, while the community uses the secondary forest as non-timber forest products such as honey bees and bamboo. The level of education of people who use forest areas is still low and the average income from the use of these areas is Rp. 1,372,679, - lower than the minimum wage in South Sulawesi Province.

scholarly journals Determination of Heavy Metals in Surface Water, Sediments and Planktons at the Junction of Multiple Rivers (Punjnad Headworks) and Their Impact on Human Health

2021 ◽  
Author(s):  
Saima Naz ◽  
Borhan Mansouri ◽  
Ahmad Manan Mustafa Chatha ◽  
Qudrat Ullah ◽  
Zain Ul Abadeen ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Surface Water ◽  
Human Health ◽  
Metal Concentrations ◽  
Bed Sediments ◽  
Heavy Metal Concentrations ◽  
Significant Difference ◽  
Pb Concentration

Abstract This study was conducted to calculate the burden of heavy metals i.e., aluminium (Al), arsenic (As), barium (Ba) and lead (Pb) in the river water of Punjnad Headworks, Bahawalpur, Pakistan. For this purpose, samples were collected from surface water, bed sediments and planktons during autumn, winter and spring seasons (September 2018 to May 2019). The results showed that in surface water Pb concentration was highest (453.87 mg L-1), while in sediments and plankton, Al concentration was highest (370.24 µg g-1 and 315.05 µg g-1, respectively). A significant difference (p < 0.000) in metal concentrations was found among surface water, bed sediments and plankton at different sampling stations during various seasons. However, findings of this study showed no adverse effects of heavy metal concentrations on human health. This study provided better understanding of various pollutants and their concentrations in water sources at the studied location.

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