Wyniki wyszukiwania - AGRO

1

Analysis of the spatial structure of urban antropogenic areas

100%

Cegielska K., Piotrowski P., Kukulska A., Szylar M.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 3

The dynamic urbanization process, which results from widespread anthropogenic transformation, affects landscape changes. These changes, measured using various factors and indices, are the subject of research around the world. The purpose of the present work was to analyse the spatial structure of anthropogenic elements of land cover. On the basis of the landscape metric – the MSI index (Mean Shape Index), the geometry configuration of individual land cover elements was checked. A Kernel Density tool was used to create a map of the elements of density distribution. The information thus obtained about the surface of anthropogenic elements of land cover expressed in [m²], per 1 km² of space, made it possible to indicate the location of areas most transformed by human activity. The area of research encompassed urban municipalities – of Tarnów and Nowy Sącz. As the source material, the vector layer of land cover was used (BDOT10k –Topographic Objects Database), which was reclassified into 11 new categories. The GIS (Geographical Information System) tools available in the QGIS and ArcGIS software were used for the purpose of the analysis. Based on the conducted studies, it was found that despite a similar percentage of anthropogenic elements of land cover, the studied areas show a different character in terms of their spatial distribution and complexity of their geometry. In the case of Nowy Sącz, small point enclaves of areas showing high density of anthropogenically transformed surfaces were observed. These surfaces are characterized by a considerable degree of dispersion but a small degree of geometrical complexity. In the city of Tarnów, the research we conducted showed a different tendency due to the much larger size of the aforementioned enclaves. Tarnów is characterized by a higher share of developed areas in the city centre, whereas Nowy Sącz is more uniform in the growth of such areas in particular density zones. Moreover, in Tarnów, along with the increase in the density of the anthropogenic land cover, the complexity of the geometry of land cover elements decreases, whereas in the case of Nowy Sącz, the value of the MSI landscape metric is proportionally inversed.

2

Analysis of the spatial structure of a pinewood phytocoenosis on basis of ecological indicators

100%

Sliwinska-Wyrzychowska A., Kimsa T., Sierka E., Majchrzak B.

Acta Biologica Silesiana

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2002

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tom 36

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Application of graph theory in the energy efficient architectural design

88%

Bolgarova N.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2015

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tom 17

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nr 8

4

Spatial structure of macrophytes in the Rotcze Lake [Lublin Polesie Region]

88%

Sugier P., Lorens B.

Acta Agrophysica

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2002

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tom 67

5

Object-oriented classification of QuickBird data for mapping seagrass spatial structure

75%

Urbanski J. A., Mazur A., Janas U.

Oceanological and Hydrobiological Studies

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2009

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tom 38

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nr 1

27-43

6

Using 3D scanning technology in malacological studies and education

75%

Kalinowski T., Czyz M., Jankowiak A., Bloszyk J.

Folia Malacologica

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2012

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tom 20

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nr 1

7

Investigations of the spatial structure of the predentine and the odontoblasts

75%

Alwas-Danowska H. M., Danowski J., Wronka A.

Folia Histochemica et Cytobiologica

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1984

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tom 22

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nr 2

8

The improvement of the spatial structure and quality of rural communication system in loess upland watershed

75%

Wawer R., Nowocien E., Podolski B., Szewranski S., Zmuda R.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2010

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tom 42

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nr 1

169-176

In strongly eroded terrains, a considerable part of agricultural roads are transformed into ravines, as a result of their inappropriate location in the terrain relief. Hence the arrangement and hardening of rural roads remains an essential component of formation of arable areas on eroded terrains. Correct derivation of the roads, which need the protective measures or even re-projecting improves the state of the road network in economically effective way, as it allocates the available resources to the most threatened areas. The article presents a study on the actual state of the net of rural roads on loess upland terrain of Mielnica watershed. The analysis, performed on digital spatial data within GIS software, revealed considerable needs for improvements of rural roads on investigated area. Basing on the results, the map of improvement measures has been developed, presenting a spatial base for a decision support system for future land improvements and allocation of economical resources for the management of rural surface communication network in rural-environmental plans.

9

Spatial structure of vegetation in a small charophyte dominated lake

75%

Pukacz A., Pelechaty M.

Biodiversity: Research and Conservation

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2013

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tom 29

10

The role of cartographic presentation methods in analysis of spatial structure of phenomena

75%

Klimczak H., Kopanczyk K.

Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum

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2012

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tom 11

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nr 1

Thematic scope of spatial data – both topographical and geographical – presented on maps is enormous. It can embrace processes and phenomena that occur as discrete or continuous, that are measured in nominal, ordinal, interval or ratio scales. It is also important if the data is absolute or relative. Visualization of such data variety is a process which involves choice of both proper cartographic methods and graphic variables. The role of a map in analysis of spatial structure is not only a visual assessment (most often in an ordinal scale), but what is more important, a map presents a source data used in investigation on characteristics and regularity of spatial data distribution. The research aimed to explain occurrence of a particular spatial pattern and their local and regional changeability. The quantitative indicators of spatial structure (e.g. indicators of homogeneity, diversity) as the result of spatial analysis are presented in a form of cartographic models. The visualization of the outcomes allow for more detailed recognition and description of spatial structure of the phenomena. Among the methods of cartographic presentation, in the paper there are used: choropleth map, geometric choropleth map, dasimetric map and isoline map. These cartographic presentations constitute the models of various characteristics of spatial patterns and relationships. The methods of modeling and presentation of analysis presented in the paper, refer to real distribution of phenomena. Therefore it considers their local and regional variation, that is of great importance for practical aspect of research.

11

Genetic relationships within colonies suggest genetic monogamy in the Eurasian beaver (Castor fiber)

75%

Syruckova A., Saveljev A. P., Frosch C., Durka W., Savelyev A. A., Munclinger P.

Acta Theriologica

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2015

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tom 60

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nr 2

Social monogamy, considered rare in mammals, has been described in two species of beaver, the Eurasion beaver (Castor fiber), and the North American beaver (Castor Canadensis). Social monogamy, however, does not necessarily imply genetic monogamy. For example, in group living mammals, females may engage in extra-pair copulations as a result of increased female mate choice opportunities. Recently, following genetic analysis, a wide range of genetic relationships among colony members have been documented in the North American beaver, including extra-pair paternity. Here, we used microsatellite loci to provide parentage estimates from colonies of the Eurasian beaver in the Kirov region, Russia. No evidence for the presence of any extra-pair young was detected. However, in two cases, we found a pair of unrelated males inhabiting a single colony. Our results suggest that while colonies may comprise both related and unrelated individuals, the genetic mating system appears to match that of the previously inferred social monogamy.

12

Natural conditions for functionally-spatial structure shaping of Krasnobrod health resort

75%

Ganko K.

Annals of Warsaw Agricultural University. Horticulture (Landscape Architecture)

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2002

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tom 23

13

Spatial structure transformations of the Niepolomicka Forest surroundings

75%

Korzeniak G.

Problemy Rozwoju Miast

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2010

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tom 07

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nr 1

This paper presents results of our research on the process of building development intensification within the Niepołomicka Forest surroundings in 1978-2003, and spatial policies of communes in relation to those areas, as well as results of those policies. Our research demonstrated diversification in the types of spatial structure transformation processes occurring in various parts of the metropolitan area, a considerable influence of even small but ecologically susceptible areas on the natural spatial structure of development, as well as justifiability of determining natural functional areas for the coordination of spatial policy on a trans-local level, in particular within metropolitan areas subjected to strong investment pressures.

14

Development of technologies used in agricultural engineering work on an example of selected stages of land consolidation process

75%

Litwin U., Janus J., Zygmunt M.

Annals of Warsaw Agricultural University - SGGW. Land Reclamation

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2006

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nr 37

123-128

15

Caracteristiques statistiques de la houle du vent etablies a l’aide de photos aeriennes

75%

Onoszko J., Mikoteit A., Wiejacha M.

Oceanologia

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1978

|

tom 09

16

The effect of scale-dependent habitat gradients on the structure of bird assemblages in the Czech Republic

75%

Reif J., Storch D., Simova I.

Acta Ornithologica

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2008

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tom 43

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nr 2

197-206

Spatial patterns in bird community structure are closely related to changes in habitat composition at small spatial scales, but the explanatory power of habitat declines towards larger scales, where dispersal limitations and historical factors becoming more important. To disentangle these effects, we performed a large-scale bird census using a small-scale field approach in the Czech Republic. Using canonical correspondence analysis, we found that the strongest scale-independent gradient in bird community composition goes from higher-altitude forest assemblages to lower-altitude farmland and human settlement assemblages. The other gradients were also scale-dependent, probably due to the different distributional patterns of particular habitats at the respective scales. Closer examination of bird occurrence in particular habitats revealed that water bodies host the most distinct bird assemblage compared to the assemblages of other habitats. Interestingly, although the census tracked the most important east-west biogeographical gradient within the Czech bird fauna, we did not find longitude to be a significant predictor of changes in bird community structure along the transect at any resolution. We suggest that the biogeographical gradient is actually related to the habitat-based distinction between the coniferous-forested higher-altitude West and the deciduous-forested lower-altitude agricultural East. Fine-scale bird-habitat associations are thus responsible for the patterns of community structure at all spatial scales.

17

Spatial structure of managed beech-dominated forest: applicability of nearest neighbors indices

75%

Szmyt J.

Dendrobiology

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2012

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tom 68

High structural diversity is often attributed to old-growth forests, usually established naturally and unmanaged. Forest diversity should be considered not only in terms of species diversity and richness but also the variation in trees dimension and their spatial distribution have to be taken into consideration. The main goal of this paper was the answer if nearest neighbor indices are suitable for spatial forest structure description. To answer this question results obtained from 3 managed beech-dominated forests from natural regeneration are presented and discussed. The following indices were calculated: Clark-Evans aggregation index (R), DBH and height differentiation indices (TD and TH, respectively) and mingling index (DM) analyzing horizontal and vertical spatial structure of the forest. Results indicated that managed beech forests demonstrated rather homogenous spatial structure in both aspects. Living trees as well as future crop trees were mostly regularly distributed. Spatial variation in DBH and height between living nearest neighbors was rather low. The lowest variation in sizes was demonstrated by future crop trees. Mature beech forests revealed single species structure and other tree species – if present – were spatially segregated from beech. It can be supposed that high homogeneity structure of these forests results from biological characteristics of this species as well as thinning treatments conducted by foresters.

18

Microspatial structure of the seed bank of xerothermic grassland - intracommunity differentiation

75%

Czarnecka J.

Acta Societatis Botanicorum Poloniae

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2004

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tom 73

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nr 2

The study analyses the quantity and spatial structure of the seed bank of the xerothermic grassland located in the Biała Góra near Tomaszów Lubelski (Central Roztocze Region). The seed stock of the bank was compared with the vegetation found in two different patches of the examined grassland. The number of seeds per square meter was estimated at 5328 and 5355, depending on the patch. The seed bank's spatial organisation is clustered. The most important factors determining this spatial distribution are: remaining of the seeds in close vicinity of parent plants, and the "group" dispersal of the seeds and fruits.

19

Cracow's spatial structure and environmental quality

75%

Gorka Z., Zborowski A.

Geographia Polonica

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1995

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tom 64

20

Spatial structure of Microtus rossiaemeridionalis during population growth

75%

Muntyanu A., Sitnik V.

Polish Ecological Studies

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1994

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tom 20

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nr 3-4

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