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.

Assessing the impact of agricultural land use changes on water quality

1999 ◽  
Vol 40 (2) ◽  
pp. 1-10 ◽  
Author(s):  
R. Meissner ◽  
J. Seeger ◽  
H. Rupp ◽  
H. Balla
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Agricultural Land ◽  
Land Use Changes ◽  
Agricultural Land Use ◽  
N Loss ◽  
Ground Water Recharge ◽  
Catchment Areas ◽  
One Year ◽  
The Impact

To study and predict environmental impacts of land use changes on water quality we conducted different types of lysimeter experiments. All of them are linked to representative experimental catchment areas in the field. This allows the verification and extrapolation of lysimeter results. The objective of this paper is to discuss a strategy for using and scaling-up of lysimeter results to a field and catchment scale. It will be shown that the N-loss determined with lysimeters falls within the variation of N-balance based model calculations, and also within ground water recharge rates calculated with models commonly used in hydrology. Extrapolation of lysimeter data to a catchment with similar soils provides a reliable basis for estimating the N-leaching caused by a change in agricultural land use. On the basis of the N-loss from the soil and the N-load of the stream, the calculations show that an increase in the proportion of one year rotation fallow from 10 to 25% results in nearly a 10% increase in the N-load of the stream. However, from the point of view of protecting drinking water quality, rotation fallow for one year is not recommended because of the resulting intensified leaching of nitrates.

scholarly journals ASSESSMENT OF THE IMPACT OF THE STRUCTURE OF SOWN AREAS OF CROPS ON THE QUALITY OF LAND

2020 ◽  
pp. 37-45
Author(s):  
Borys Sydoruk ◽  
Tetyana Yashchuk ◽  
Halyna Sydoruk
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Institutional Environment ◽  
Agricultural Landscapes ◽  
Economic Feasibility ◽  
Agricultural Land Use ◽  
Logical Method ◽  
Environmentally Sound ◽  
The Impact

Introduction. Activities in the field of organization of agricultural land use should be focused primarily on the preservation and reproduction of land, the most productive implementation of all production processes and ensuring environmentally sound use of agricultural landscapes. One of the effective ways to ensure the balanced use of agricultural land by agricultural formations is to optimize the location of crops in accordance with the indicators of agrochemical evaluation of soils, taking into account the economic feasibility of their cultivation. Methods. Research conducted by use of the dialectical method of knowledge of the economic laws and systematic approach to the study of economic phenomena and processes, monographic, induction and deduction - to form of balancing agricultural land use; economic and statistical - to identify the factors that led to changes in the quality of land; abstract-logical method - in the implementation of theoretical generalizations and formulation of conclusions. Results. The author substantiates the importance of optimizing the sown area of agricultural crops to ensure a balanced use of land. A study of soil quality indicators within individual land plots was conducted and their dynamics were analyzed. The impact of the structure of growing crops on the balance of humus in the soil is assessed and the main measures to improve it are substantiated. The main components in the system of improving the quality of land are identified and their importance is proved Discussion. The defining direction for further research is the formation of an institutional environment for the balanced use of agricultural land in order to improve the quality of soils. Keywords: agricultural production, balanced land use, agricultural land, optimization, structure of sown areas.

scholarly journals Assessment of Water Quality in Cilutung Watershed

2018 ◽  
Vol 73 ◽  
pp. 06004 ◽  
Author(s):  
Oktariani Alvira ◽  
Kusratmoko Eko ◽  
Kuswantoro
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Government Regulation ◽  
Agricultural Land ◽  
Animal Husbandry ◽  
Quality Standard ◽  
Agricultural Land Use ◽  
Class Iii ◽  
Contributing Factors

Water is very valuable resources that provide people and other living things. Besides the need for water for drinking, water resources play an important role in such as livestock, fisheries, water for irrigation and water recreation. However, water quality of the rivers may degrade due to the variation of land use as human activities increase. Cilutung watershed is dominated by the agricultural land use which in many studies shows that agricultural land use has a great impact on river deterioration. It does not affect only the physicochemical of water, the excessive amount of nutrient may harm the biotic ecosystem. The purpose of this study was assessing water quality of the rivers in Cilutung Watershed and the contributing factors using physicochemical and biological parameters. According to ANOVA and PPM calculations, water quality was affected by land use spatially and river discharge temporally. The overall results showed that the rivers were categorized as slightly polluted referring to WQI, BMWP, and Saprobic Index. In general, all water quality parameters measured in Cilutung watershed met water quality standard Class III as stipulated in Indonesia Government Regulation No. 82/2001. Therefore, water sources were still acceptable for fisheries, animal husbandry, and water for irrigation.

scholarly journals Determining agricultural land use scenarios in a mesoscale Bavarian watershed for modelling future water quality

2012 ◽  
Vol 31 ◽  
pp. 9-14 ◽  
Author(s):  
B. B. Mehdi ◽  
R. Ludwig ◽  
B. Lehner
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Agricultural Land ◽  
Hydrological Model ◽  
Land Use Changes ◽  
Agricultural Land Use ◽  
Quality Of Water ◽  
Land Use Scenarios ◽  
Farm Scale

Abstract. Land use scenarios are of primordial importance when implementing a hydrological model for the purpose of determining the future quality of water in a watershed. This paper provides the background for researching potential agricultural land use changes that may take place in a mesoscale watershed, for water quality research, and describes why studying the farm scale is important. An on-going study in Bavaria examining the local drivers of change in land use is described.

scholarly journals Protection of Biosphere Resources in Plant Production

2020 ◽  
Vol 29 (2) ◽  
pp. 173
Author(s):  
Małgorzata E. Szymańska
Keyword(s):  
Land Use ◽  
Agricultural Production ◽  
Agricultural Land ◽  
Plant Production ◽  
Agricultural Land Use ◽  
Protective Function ◽  
Eu Legislation ◽  
The Impact ◽  
The Relationship

<p>The article analyzes the impact of plant production on the protection of biosphere resources. Agriculture significantly affects the quality of resources and natural environment assets and shapes their character. The quality of environmental resources determines the size and directions of agricultural production, and agriculture changes ecosystems, shapes the landscape, affects the quality and quantity of natural resources. European integration has influenced the relationship between agriculture and the environment in many directions. EU legislation and the formulation of development strategies and economic programs contribute to the greening of agricultural land use and the protection of biosphere resources. The assessment of these activities is definitely positive due to the creation of conditions for conflict-free coexistence of the protective function and the agricultural function.</p>

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