scholarly journals Transport of biogenes in the Szeszupa fluvial-limnic system in the Suwalski Landscape Park

2013 ◽  
Vol 13 (1) ◽  
pp. 31-42
Author(s):  
Elżbieta Jekatierynczuk-Rudczyk
Keyword(s):  
Trophic State ◽  
Arable Land ◽  
Anthropogenic Activity ◽  
Lake Basin ◽  
Ecological State ◽  
Slight Effect ◽  
Summer Period ◽  
River Continuum ◽  
River Catchment ◽  
Continuum Concept

AbstractTransport of biogenic matter along the course of the Szeszupa River in the Suwalski Landscape Park (SLP) occurs in accordance with the river continuum concept. Only TP concentration decreases along the river’s course. TP and TOC concentrations classify the Szeszupa River to the moderate ecological state. The ecological state of three lakes (Linówek, Pogorzałek, and Perty) in the Szeszupa River catchment was estimated as very good. The remaining lakes, due to high TP concentrations, belong to the moderate state. The management of the catchment affects the amount of biogenic matter supplied to the Szeszupa River. The highest proportion of forests in the Jaczniówka River catchment clearly results in a decrease in the amount of biogenes in the river. The remaining partial catchments, with a higher proportion of arable land, meadows, and pastures, provide higher amounts of bioelements. The loads of bioelements stored in lakes in the summer period are determined by the size of the lakes (surface area of a lake and volume of water accumulated in the lake basin). This directly suggests a lack of anthropogenic activity in the catchments or the very slight effect of it on the lakes’ ecological and trophic state.

The Spatiotemporal Variations of Suspended Sediment Concentration in Le’an River Catchment of Poyang Lake Basin

2012 ◽  
Vol 610-613 ◽  
pp. 1099-1102 ◽  
Author(s):  
Zhen Wang ◽  
Qi Zhang ◽  
Xiu Li Xu ◽  
Hai Ying Gao
Keyword(s):  
Suspended Sediment ◽  
Poyang Lake ◽  
Arable Land ◽  
Sediment Concentration ◽  
Average Concentration ◽  
Lake Basin ◽  
Rainfall Events ◽  
River Catchment ◽  
Poyang Lake Basin ◽  
Different Seasons

Suspended sediment (SS) is one of the important parameters quantifying the degree of water pollution. In order to explore the spatiotemporal variation of the SS in Le’an river catchment, an important sub-catchment of Poyang lake basin, a total of 17 sampling points at rivers were selected for observations. Results show that, the concentration of SS is quite different across the catchment. The average concentration of SS in the upstream of the catchment with forest as the dominant land use, is 6.92mg/L, while the concentration in the downstream with a certain percentage of arable land is 14.39mg/L. The SS concentration shows an increasing trend from the upstream to the downstream, in correlation with the change of land uses. Also there exists a considerable deviation of the SS concentration in different seasons. The concentration in summer is relatively high, while lower in other seasons, with a likely relationship to rainfall events.

scholarly journals ORGANIZATION OF SUSTAINABLE AGRICULTURAL LAND USE BASED ON LANDSCAPE ANALYSIS

2020 ◽  
Vol 12 (3) ◽  
pp. 339-348
Author(s):  
Vladimir TATARINTSEV ◽  
◽  
Leonid TATARINTSEV ◽  
Alex MATSYURA ◽  
Andrei BONDAROVICH ◽  
...  
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Arable Land ◽  
Agricultural Landscapes ◽  
Landscape Analysis ◽  
Anthropogenic Activity ◽  
Agricultural Land Use ◽  
Agricultural Lands ◽  
Rational Use ◽  
Erosion Processes

The aim of the work was the landscape analysis of agricultural geographical landscapes in the Altai Territory and elaboration of measures aimed at the rational use of agricultural lands. Environmental and landscape (landscape) approach became the main method of scientific research used in the analysis of modern agricultural landscapes. The cartographic method, using GIS-technologies, made it possible to digitize the obtained materials. Synthesized maps of agro-ecological, natural and other zoning of territories are based on topographic, soil, geobotanical and other thematic maps made during land surveying during the field survey. Retrospective analysis, induction and deduction methods,analysis and synthesis, as well as the abstract-logic method were also used in the work. Our main result was the analysis of land use territory for agricultural enterprise in municipal district of Altai Krai. Exploration of lands indicates a pronounced plant-growing specialization of JSC “Pobeda” with a developed animal breeding direction. Limiting factors affecting the rational use of land are natural and climatic conditions, terrain,unsystematic anthropogenic activity and, as a result, the development of erosion processes. The degree of eroded and deflated arable land is more than 50%, hay and pasture lands are also very unstable. Landscapes have been typified, based on which eleven types of land have been identified and their geomorphological description has been carried out. The first five types of land can be used for agricultural production with limitations compensated by crop technology and erosion control measures, the sixth and seventh types require grassing and, in some cases,conservation, the eighth and ninth types can be partially used for pasture and area valorization; the remaining two are not suitable for agricultural use but should be potentially used for planting and forest management. As a result of the presented transformation of agricultural lands, the structure of cultivated areas has changed. The area of arable land decreased by 877 ha, and of pastures by 365 ha,while the area under hayfields, fallow lands, and forest lands increased by 295, 191, and 875 ha respectively. Low-productive lands were withdrawn from agriculture. We suggested that the sustainability of agricultural land use was mainly caused by the reduction of anthropogenic load and increase in ecological equilibrium of the territory.

Retesting a prediction of the River Continuum Concept: autochthonous versus allochthonous resources in the diets of invertebrates

2016 ◽  
Vol 35 (2) ◽  
pp. 534-543 ◽  
Author(s):  
Emma J. Rosi-Marshall ◽  
Kathryn L. Vallis ◽  
Colden V. Baxter ◽  
John M. Davis
Keyword(s):  
River Continuum Concept ◽  
River Continuum ◽  
Allochthonous Resources ◽  
Continuum Concept

Hydrologic and Riparian Influences on the Import and Storage of Coarse Particulate Organic Matter in a Prairie Stream

1988 ◽  
Vol 45 (4) ◽  
pp. 655-665 ◽  
Author(s):  
Martin E. Gurtz ◽  
G. Richard Marzolf ◽  
Keith T. Killingbeck ◽  
David L. Smith ◽  
J. Vaun McArthur
Keyword(s):  
Organic Matter ◽  
Particulate Organic Matter ◽  
Riparian Vegetation ◽  
River Continuum Concept ◽  
Hydrologic Regime ◽  
River Continuum ◽  
Coarse Particulate Organic Matter ◽  
Continuum Concept ◽  
And Storage ◽  
Prairie Stream

The hydrologic regime and zonation of riparian vegetation influenced the quantity and quality of coarse particulate organic matter (CPOM; >1 mm) stored in the channel and upper bank of a prairie stream. In a 5.4-km intermittent reach of the South Branch of Kings Creek on Konza Prairie, Kansas, total annual import was lowest in headwater reaches and increased downstream. Total storage of benthic CPOM in the dry channel and on the bank before the flow period was highest in the fourth- and fifth-order gallery forest zone (999 g ash-free dry mass∙m−2) and less in upstream reaches (320–341 g∙m−2). These longitudinal patterns of CPOM annual import and storage (before the flow period) were opposite those predicted by the river continuum concept for streams draining forested regions. Following flow, headwater channels had more CPOM (291 g∙m−2) than downstream reaches. On the bank, storage was always highest in downstream reaches. Composition of CPOM both in the channel and on the bank varied with changes in riparian vegetation; grass tissues dominated in headwater channels, while wood and leaves of trees and shrubs were more abundant downstream. During the flow period, storage of CPOM increased only in headwater channels, where retention was high despite the lack of woody debris. In this intermittent prairie stream, benthic CPOM may not contribute consistently to the terrestrial/aquatic linkages that are suggested in the river continuum concept because of (1) a paucity of large CPOM sources (e.g. trees, shrubs) in the upper reaches and (2) a hydrologic regime that reduces the amount, as well as the predictability, of stored CPOM. The biota of prairie streams must have opportunistic food gathering and reproductive strategies to take advantage of variable food resources in a flow environment that is itself very unpredictable.

scholarly journals SPATIAL-FUNCTIONAL METHOD LAND ORDER FORMATION OF AGRICULTURE LANDSCAPE RESISTANCE

2021 ◽  
pp. 7-16
Author(s):  
Volodymyr Artamonov ◽  
Maryna Vasylenko
Keyword(s):  
Land Management ◽  
Crop Production ◽  
Arable Land ◽  
Functional Method ◽  
Agricultural Landscapes ◽  
The State ◽  
Anthropogenic Activity ◽  
Landscape Resistance ◽  
Natural Conditions ◽  
Systematic Analysis

Peculiarities of natural conditions of the territory of Ukraine have historically determined mainly the agricultural use of its lands, the indirect consequence of which was the formation of agro-landscapes as a specific form of spatial realization of anthropogenic activity. The study of agrolandscapes, a comprehensive assessment of their condition and development trends, development and implementation of adequate land management solutions are a key task to avoid degradation, especially arable land. In the context of the above, the shortcomings of modern proposals and indicators for assessing the state of agricultural landscapes and their land management are considered and identified. Concerns about the recommendations of domestic scientists and practitioners to transform about 12 million hectares of arable land into other lands are justified. The motivation for this decision was the idea of excessive plowing of the territory of Ukraine, although world experience provides positive evidence of successful agriculture, even under such conditions. Allegations of insufficient study of the problem of land management formation of sustainable agrolandscapes are given. It is proposed to use the term "sustainable" for the agro-landscape, the state of which corresponds to the ecological and social-industrial conditions of land use. Systematic analysis of the structural components (lands) of the agro-landscape revealed the significant role of their interaction in creating and maintaining a microclimate favorable for crop production in adverse natural conditions. The legitimacy and expediency and practical efficiency of using the spatial-functional method of land management formation of the stability of agro-landscapes are substantiated. 

scholarly journals Longitudinal ecological zonation in four Algerian streams

2018 ◽  
Vol 19 (2) ◽  
pp. 135-149
Author(s):  
Djamel Eddine Zouakh ◽  
◽  
Abderrafik Meddour ◽  
◽  
Keyword(s):  
Trophic Levels ◽  
Invertebrate Fauna ◽  
River Continuum ◽  
Site Distribution ◽  
Biological Survey ◽  
Continuum Concept ◽  
Middle Stream ◽  
Ecological Zonation ◽  
Downstream Area ◽  
Hydrographic Network

This hydro-biological survey on benthic invertebrates was carried out in the most important hydrographic network of the Mitidja plain,Oued El Harrachbasin, Algeria. Results revealedecological zonation taking into account the taxonomic richness and the relative abundance of different zoological groups, and allowed distinguishing abundant, ubiquitous and permanent taxa as well as the existence of a spatiotemporal faunistic gradient. These preliminary results allowed highlightingtaxonomically the “upstream invertebrate fauna”, the “ubiquitous invertebrate fauna” and the “downstream invertebrate fauna”. Consequently, it appearedthat Plecoptera, Hemiptera, Coleoptera are characteristic to the upstream area during the whole year in most of the sampling sites, whereas Diptera, Oligochaeta and Hydracarina are more abundant in the downstream area but in less density in the middle stream. On the other hand, the longitudinal evolution approach was considered in order to evaluate the inter-site distribution. According to the trophic levels, the classification between the various communities was investigated taking into account the concepts of the "Food Functional Group" and "The River Continuum Concept".

scholarly journals Improving the methodology of cadastral land assessment

2021 ◽  
Vol 1 (11) ◽  
pp. 52-70
Author(s):  
G. V. Kolosov
Keyword(s):  
Mathematical Models ◽  
Arable Land ◽  
Cost Accounting ◽  
Ecological State ◽  
Annual Cycles ◽  
Ecological Paradigm ◽  
Land Valuation ◽  
The Cost ◽  
Economic Use ◽  
Land Assessment

Methodological tools for improving the existing methods of cadastral land valuation are described. The basis of its development and improvement of objectivity is the ecological paradigm, the conceptual novelty of which consists in the cost accounting of changes in productive properties and at the same time the ecological state of arable land as a result of annual cycles of economic use. A conceptually new way of forecasting the potential costs associated with the cultivation of crop products has also been developed. It is based on the economic and mathematical models created by the author.

scholarly journals Testing the River Continuum Concept with geostatistical stream-network models

2019 ◽  
Vol 39 ◽  
pp. 100773 ◽  
Author(s):  
Stefano Larsen ◽  
Maria Cristina Bruno ◽  
Ian P. Vaughan ◽  
Guido Zolezzi
Keyword(s):  
Network Models ◽  
River Continuum Concept ◽  
River Continuum ◽  
Stream Network ◽  
Continuum Concept
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