Search Results

1 - 10 of 25 items :

  • "Vegetation analysis" x
Clear All

shifts in dispersal syndromes. - PALAIOS, 27(12): 887-903.https://doi.org/10.2110/palo.2012.p12-051r Kovar-Eder, J., Kvaček, Z. (2003): Towards vegetation mapping based on the fossil plant record. - Acta UniversitatisCarolinae, Geologica, 46(4): 7-13. Kovar-Eder, J., Kvaček, Z. (2007): The integrated plant record (IPR) to reconstruct Neogene vegetation - the IPR vegetation analysis. - Acta Palaeoboanica, 47(2): 391-418. Kovar-Eder, J., Kvaček, Z., Ströbitzer-Hermann, M. (2004): The Miocene Flora of Parschlug (Styria, Austria) - Revision and Synthesis. - Annalen des

Abstract

Mediterranean regions have experienced significant soil degradation over the past decades. In this context, careful land observation using satellite data is crucial for understanding the long-term usage patterns of natural resources and facilitating their sustainable management to monitor and evaluate the potential degradation. Given the environmental and political interest on this problem, there is urgent need for a centralized repository and mechanism to share geospatial data, information and maps of land change. Geospatial data collecting is one of the most important task for many users because there are significant barriers in accessing and using data. This limit could be overcome by implementing a WebGIS through a combination of existing free and open source software for geographic information systems (FOSS4G).

In this paper we preliminary discuss methods for collecting raster data in a geodatabase by processing open multi-temporal and multi-scale satellite data aimed at retrieving indicators for land degradation phenomenon (i.e. land cover/land use analysis, vegetation indices, trend analysis, etc.). Then we describe a methodology for designing a WebGIS framework in order to disseminate information through maps for territory monitoring. Basic WebGIS functions were extended with the help of POSTGIS database and OpenLayers libraries. Geoserver was customized to set up and enhance the website functions developing various advanced queries using PostgreSQL and innovative tools to carry out efficiently multi-layer overlay analysis. The end-product is a simple system that provides the opportunity not only to consult interactively but also download processed remote sensing data.

Abstract

The main purpose of this publication is to present the current progress of the work associated with the use of a lightweight unmanned platforms for various environmental studies. Current development in information technology, electronics and sensors miniaturisation allows mounting multispectral cameras and scanners on unmanned aerial vehicle (UAV) that could only be used on board aircraft and satellites. Remote Sensing Division in the Institute of Aviation carries out innovative researches using multisensory platform and lightweight unmanned vehicle to evaluate the health state of forests in Wielkopolska province. In this paper, applicability of multispectral images analysis acquired several times during the growing season from low altitude (up to 800m) is presented. We present remote sensing indicators computed by our software and common methods for assessing state of trees health. The correctness of applied methods is verified using analysis of satellite scenes acquired by Landsat 8 OLI instrument (Operational Land Imager).

Geologischen Reichsanstalt, 17(1): 77-188. Teodoridis, V., Kovar-Eder, J., Marek, P., Kvaček, Z., Mazouch, P. (2011a): The Integrated Plant Record Vegetation Analysis: Internet Platform and Online Application. - Acta Musei Nationalis Pragae, Series B - Historia Naturalis, 67(3-4): 159-164. Teodoridis, V., Kovar-Eder, J., Mazouch, P. (2011b): The IPR-vegetation analysis applied to modern vegetation in SE China and Japan. - PALAIOS, 26(10): 623-638. https://doi.org/10.2110/palo.2010.p10-149r Teodoridis, V., Kvaček, Z. (2015): Palaeoenvironmental evaluation of Cainozoic plant

Vegetation structure and ecological characteristics of forest of North Andaman Islands (India)

In this study, 3-ha research plots were established, one each in evergreen, semi-evergreen, and moist deciduous forests of North Andaman Islands. These 3 vegetation types were selected to study the structural aspects of plant diversity in forest communities. Our results showed high species richness and basal area in evergreen forest, high diversity in semi-evergreen forest, and high tree density (trees ha-1) in moist deciduous forest. At family level, the Anacardiaceae and Sterculiaceae dominated all the forest types, and were distributed throughout the North Andaman Islands. In the 3 forest communities, most species exhibited clumped spatial distribution, while random distribution ranked second. Tree girth class distribution revealed a decreasing number of trees with increasing girth class, indicating natural regeneration of these forest types. The species-area curve clearly reached a plateau at 3-ha area in respect of species number, supporting the adequacy of the large plot size selected in the present investigation. The study recorded a total of 136 tree species in the 3 forest communities and was higher than in many other tropical forest sites. The vegetation analysis of 3-ha plot in 3 different forest types substantially contributed data on North Andaman site potentiality, with reference to its species richness and diversity.

Abstract

This study presents a floristic and vegetational analysis of the territory of the Onferno Nature Reserve. The site extends over about 120 hectares, and is located in central Italy, in a hilly area near the Adriatic coast. It is characterised by the presence of large gypsum blocks that have karst caves, where important colonies of bats lives. This study of the vegetation allowed the description of six main vegetation series, divided into three different geosigmeta: a geomorphological unit of gypsum substrata (Gessi di Onferno); a geomorphological unit of clay substrata (Formazione del Santerno); and a geomorphological unit of compact sandstone substrata (Formazione Montecalvo in Foglia). This floristic and vegetation studies carried out on the secondary grasslands (EC Habitat 6210) have allowed the evaluation of the grazing effects on the conservation of their biodiversity, and highlight the critical nature of this management method. Furthermore, on the basis of the vegetation studies, the list of habitats according to EC Directive 92/43/CEE has been better defined and updated.

York and London. Pandey U. & Singh J. S. 1984. Energy flow relationships between agro and forest ecosystems in Central Himalaya. Environ Conserv 11(1): 45-53. Ram J., Kumar A. & Bhatt J. 2004. Plant diversity in six forest types of Uttaranchal, Central Himalaya, India. Curr Sci 86(7): 975-978. Rawal R. S. 1991. Woody vegetation analysis along an elevationalgradient of upper surju catchment. Ph. D. Thesis Kumaun University, Nainital, India. Rawal R. S., Gairola S. & Dhar U. 2012. Effects of disturbance intensities on vegetation patterns in oak forest of Kumaun, west

of Botany, Polish Academy of Sciences, Kraków, 563-568. Bzdon G. 2008. Gravel pits as habitat islands: Floristic diversity and vegetation analysis. Pol. J. Ecol. 56 (2), 239-250.5. Bzdon G. 2009. Floristic diversity of gravel-pits of the Siedlce Plateau - an analysis of the flora. Annales UMCS, Sectio C, 64 (1), 35-66. Czylok A. 1997. Pionierskie zbiorowiska ze skrzypem pstrym Equisetum variegatum Schleich. w wyrobiskach po eksploatacji piasku (Pioneering plant communities with variegated horsetail Equisetum variegatum Schleich. in the areas of sandpits). [In

Region (Saudi Arabia): assessment of conservation knowledge. Aceh International Journal of Science and Technology, 4(2), 54−58. DOI : 10.13170/aijst.4.2.2489. Al-Mutairi, K., Al-Shami, S., Khorshid, Z. & Moawed M. (2016). Floristic diversity of Tabuk Province, North Saudi Arabia. The Journal of Animal and Plant Sciences, 26(4), 1019−1025. AlNafie, A.H. (2008). Phytogeography of Saudi Arabia. Saudi J. Biol. Sci., 15(1), 159−176. Al-Sodany, Y.M. (1998). Vegetation analysis of canals, drains and lakes of northern part of Nile Delta Region. Ph.D. Thesis, Fac. Sci., Tanta

. - Hydrobiologia, 565, 87-103. Tonolli, S., Dalponte, M., Vescuvo, L., Rodeghiero, M., Bruzzone, L., Gianelle, D. 2011. Mapping and modeling forest tree volume using forest inventory and airborne laser scanning. - European Journal of Forest Research, 130, 569-577. Wagner, W., Eberhöfer, C., Hollaus, M., Summer, G. 2004. Robust fi ltering of airborne laser scanner data for vegetation analysis. - International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, XXXVI, 8/W2, 56-61. Wolter, P.T., Mladenoff, D.J., Host, G.E., Crow, T.R. 1995. Improved forest