Correlating Mushroom Habitats and Geology in Grevena Prefecture (Greece) with the Use of Geographic Information Systems (GIS)

2015 ◽  
Vol 6 (2) ◽  
pp. 1-14 ◽  
Author(s):  
Stefanos Tsiaras ◽  
Christos Domakinis
Keyword(s):  
Land Use ◽  
Forest Ecosystems ◽  
Forest Types ◽  
Fungal Flora ◽  
Geological Formation ◽  
The Relationship ◽  
Geological Formations ◽  
Of Greece ◽  
Geological Background

The aim of this study is to assess the relationship between geological background and habitats of mushrooms. The study area is Grevena, a Prefecture of Greece well known for the great variety of the fungal flora and its distinctive geology. Thematic maps of the study area were produced with the use of GIS, taking under consideration geological formations, elevation, ecosystems and land use. Findings provide evidence that certain mushrooms are more likely to be found in specific ecosystems. The connection between forest ecosystems and the geology of the study area is more apparent, as certain forest types are related with specific geological formations; due to the insignificant presence of grasslands and riverine settings in the study area, it is not possible to assess the role of the geological formation for these mushroom habitats.

Study on Wood Carbon Sequestration Based on Micro-Characteristics of Wood

2010 ◽  
Vol 113-116 ◽  
pp. 1693-1696
Author(s):  
Ming Hui Guo ◽  
Xin Guan ◽  
Li Zhu ◽  
Jian Li
Keyword(s):  
Carbon Sequestration ◽  
Forest Ecosystems ◽  
Structural Characteristics ◽  
Structural Features ◽  
Carbon Stocks ◽  
Xylem Parenchyma ◽  
Micro Level ◽  
Relationship Of ◽  
The Relationship

Trees are complicated and important organisms in forest ecosystem. They are both carbon stocks and carbon source. In order to give full play to the role of wood carbon sequestration, this paper discussed the relationship of wood structural features and wood carbon sequestration at micro-level. It shows that wood carbon sequestration can be synthetically reflected by vessel, tracheid/xylon, wood rays, intercellular canal, xylem parenchyma and so on. The rate of cell wall and wood carbon sequestration is the relationship of direct proportional function. Micro-structural characteristics of wood can reflect wood carbon sequestration of forest ecosystems, as well as have a practical guide to enhance carbon storage of wood.

SPATIAL PATTERNS OF ECONOMIC RENTS: DEVELOPING SUVARNABHUMI INTERNATIONAL AIRPORT, THAILAND

2016 ◽  
Vol 11 (03) ◽  
pp. 1650014
Author(s):  
CHAKARIN BEJRANANDA ◽  
YUK LEE ◽  
THANCHANOK BEJRANANDA
Keyword(s):  
Land Use ◽  
Air Transportation ◽  
Land Values ◽  
Urban Structure ◽  
Land Value ◽  
Land Uses ◽  
International Airport ◽  
The Relationship

With the rise of the importance of air transportation in the 21st century, the role of economics in airport planning and decision-making has become crucial to the urban structure and land values. This paper examines the relationship between an airport and its impact on the distribution of urban land uses and land values by applying the Alonso’s bid-rent model. Using Suvarnabhumi International Airport as a case study, the analysis was made over three different time periods of airport development. The statistical results confirm that: (i) Alonso’s model can be used to explain the impacts of the airport only for the northeast quadrant of the airport; (ii) proximity to the airport shows an inverse relationship with the land value of all six types of land use activities through three periods of time; and (iii) the land value for commercial land use is the most sensitive to the location of the airport compared to other types of land use activities.

scholarly journals Forest sites and forest types on rendzinas in Poland

2018 ◽  
Vol 69 (2) ◽  
pp. 121-129 ◽  
Author(s):  
Jarosław Lasota ◽  
Ewa Błońska ◽  
Piotr Pacanowski
Keyword(s):  
Plant Communities ◽  
Deciduous Forests ◽  
Forest Types ◽  
Beech Forests ◽  
Mountain Areas ◽  
Forest Sites ◽  
Montane Zone ◽  
Geomorphological Processes ◽  
The Relationship

Abstract The article discusses the relationship between rendzinas and types of forest sites and plant communities in lowland, upland and mountain areas in Poland. Rendzinas as soils of forest sites play an important role in the uplands of southern Poland. In mountain areas, their preponderance is limited to the area of the Pieniny and the Western Tatras. The site-forming role of rendzinas in the upland areas depends mainly on geomorphological conditions. Typical rendzinas generally form eutrophic sites of multi-species oak-hornbeam forests, fertile beech forests and thermophilous beech forests. Rendzinas with lithological discontinuities usually create poorer form sites of mixed deciduous forests, which correspond to floristically poorer phytocenoses of acidophilous deciduous forests. In mountain areas, the climate and geomorphological processes form the zonation of vegetation and rendzinas. In vertical layout sites, the rendzinas change from fertile sites of fir and beech forests, through mesotrophic mixed forests sites, to spruce forest on limestone in the upper montane zone.

“Where has the Future Gone?” Rethinking the Role of Integrated Land-Use Models in Spatial Planning

10.1068/a3785 ◽  
2005 ◽  
Vol 37 (8) ◽  
pp. 1353-1371 ◽  
Author(s):  
Helen Couclelis
Keyword(s):  
Land Use ◽  
Spatial Planning ◽  
Planning Support Systems ◽  
Scenario Development ◽  
Seamless Integration ◽  
The Future ◽  
Land Use Models ◽  
Tools And Techniques ◽  
The Relationship

Despite more than four decades of efforts to integrate the two fields, the place of land-use models in planning remains problematic. The expanding possibilities afforded by today's planning support systems (PSS) invite a rethinking of the relationship between land-use models and planning in the context of new approaches, tools, and techniques that can amplify the positive synergies between the two domains and enhance the ability of spatial planning to prepare for the future. This paper addresses one vitally important area in which the contribution of models to planning practice could be greatly improved. This is the neglected area of strategic planning, which is inextricably linked with the future-oriented mission of the field. The paper begins with an examination of the continuing tensions between modeling and planning, tensions that need to be reconsidered in light of the growing sophistication of land-use models intended for use in a planning context. It then outlines three interrelated roles for land-use models that would help support the mission of planning as a visionary and future-oriented process. These roles are based on approaches discussed in the planning literature (and in the ‘futures' literature more generally) as scenario writing, visioning, and storytelling. Although scenario writing (or development) is a notion familiar to land-use modelers, not every form of scenario development commonly proposed by modelers is useful to planners. Visioning is a goal-oriented process that focuses the community on desired ends and helps sort out the means for reaching these ends. Finally, good storytelling can help to clarify the implications of different alternatives and to build consensus by presenting particular desired or feared future developments in terms meaningful enough to be credible to nonspecialists. The paper presents examples of land-use models that seem well suited to one or the other of these roles. Although no single model is likely to satisfy all three roles, a well-designed PSS can provide the context for their seamless integration and mutual reinforcement.

Silvicultural education in Greece today and tomorrow

1996 ◽  
Vol 61 ◽  
Author(s):  
A. T.H. Hatzistathis ◽  
T. H. Zagas
Keyword(s):  
Central Europe ◽  
Forest Ecosystems ◽  
Education Programme ◽  
Developed Countries ◽  
Degraded Forest ◽  
Multiple Role ◽  
Ecological Role ◽  
Degraded Forest Ecosystems ◽  
Of Greece

Since  last century, silviculture in Greece has been based on the knowledge and  experience of the silviculturally developed countries, mainly those of  Central Europe. This knowledge was adapted to the Greek conditions with  satisfactory results. The Laboratory of Silviculture which belongs to the  Department of Forestry and Natural Environment pays attention to the existing  silvicultural problems of Greece and other countries and records them. With  proper evaluation of these problems in the framework of the present education  programme, our Laboratory tries to educate the students of the Department and  consult the Forest Engineers. Special attention is paid to the following  subjects:     - The multiple role of natural forest (with priority to their ecological  role).     - The rehabilitation of the degraded forest ecosystems (avoidance of the  danger of desertification).    - The landscape exology according to the contemporary needs.    - The protection of the forests and their regeneration mainly after  destruction.    - The systematic cultivation of forests and especially of plantations,  aiming mainly to safeguard their resistance against various dangers.

Land use shapes the relationship between tree cover and carbon stocks in the tropics

2020 ◽  
Author(s):  
Manan Bhan ◽  
Steffen Fritz ◽  
Simone Gingrich ◽  
Karlheinz Erb
Keyword(s):  
Land Use ◽  
Carbon Stocks ◽  
Tree Cover ◽  
Land Use Impacts ◽  
Carbon Modelling ◽  
Land Use Effects ◽  
The Tropics ◽  
The Relationship

<p>Tree cover (TC) and biomass carbon stocks (CS) are key parameters for characterizing the states and dynamics of tropical ecosystems. Despite the presence of several datasets with high spatial resolution, differences among data products prevail and systemic inter-relations between TC and CS remain poorly quantified. Further, the role of land use in explaining disagreements among datasets remains largely unexplored. Here, by combining established spatially-explicit estimates of TC and CS over contemporary timescales, we analyse uncertainties between these two ecosystem parameters across the global tropics (~ 23.4°N to 23.4°S). We quantify land use effects by contrasting actual and potential (ie. in the hypothetical absence of land use) states of vegetation and by correlating TC and CS changes with land use intensity. Our results show that land use strongly alters both TC and CS, with disproportionate impacts on CS and large variations across tropical ecozones. Differences between potential and actual vegetation CS remain above 50% across the tropics except for rainforests (34%). Differences within corresponding TC estimates are more variable, and higher among sparsely-vegetated landscapes (81% for shrublands), highlighting the overwhelming extent of land use impacts. Cross-comparisons across available TC and CS datasets reveal large spatial disagreements. More than a third of all identified co-located TC and CS change datasets show disagreements in the direction of change (Gain vs Loss), and these divergences persist as a function of land use intensities. Our results provide a characterization of the prevailing uncertainty structures of input datasets and the spatial patterns of land use-induced disturbances at the pixel and ecozone-levels. This assumes added significance in light of the stock-taking exercises envisaged as part of the Paris Agreement, the advancement of terrestrial carbon modelling initiatives as well as emerging, novel remote sensing products.</p>

scholarly journals The Relationship between some Forest Stand Properties and the Occurrence of Orchids in the Central Part of the Moravian Karst Protected Landscape Area

2017 ◽  
Vol 65 (3) ◽  
pp. 919-931 ◽  
Author(s):  
Alois Procházka ◽  
Tomáš Mikita ◽  
Petr Jelínek
Keyword(s):  
Land Use ◽  
Forest Ecosystems ◽  
Forest Type ◽  
Forest Stand ◽  
Small Scale ◽  
Natural Conditions ◽  
The Core ◽  
Moravian Karst ◽  
The Relationship ◽  
Boundary Lines

The aim of this study is to determine the relationship between some forest stand properties and the occurrence of orchids in the territory of the Křtiny Training Forest Enterprise. The research took place between the villages of Babice nad Svitavou, Kanice and Křtiny and largely spans the Moravian Karst Protected Landscape Area, partly in the core zone as well as the second zone of the Moravian Karst, where ordinary logging practices are used. Only a small part falls into the core area (first zone) – the two small‑scale nature reserves with a total area of 61 hectares and a non‑intervention regime. The selected area is situated mainly in forest ecosystems with beech and oak (Fagi‑Querceta and Querci‑Fageta) covering an area of 853 ha. The occurrence of orchids was examined in relation to natural conditions, forest type and forestry land use. In particular the occurrence of orchids to the height of the tree vegetation, to the Lidar Penetration Index and to the distance from roads and cleared boundary lines were investigated.

The Academy Abroad: The Nineteenth-Century Origin of the British School at Athens

2005 ◽  
Author(s):  
Mary Beard ◽  
Christopher Stray
Keyword(s):  
Nineteenth Century ◽  
Middle Class ◽  
Early History ◽  
British School ◽  
Victorian Period ◽  
History Of ◽  
Key Issues ◽  
The Relationship ◽  
Of Greece

This chapter focuses on the foundation and early history of the British School at Athens. It shows how the story of such foreign institutes intersects with many of the key issues in the rethinking of the Classics in the late Victorian period. These issues involve: the role of archaeology within the study of Classics, how archaeology was to be defined and bounded, and the relationship between the study of Classics and the modern lands of Greece and Italy, particularly in the light of growing middle class tourism and its infrastructures.

Abandonment Is Not as It Seems: An Approach to the Relationship between Site and Regional Abandonment

2001 ◽  
Vol 66 (2) ◽  
pp. 213-235 ◽  
Author(s):  
Margaret C. Nelson ◽  
Michelle Hegmon
Keyword(s):  
Land Use ◽  
New Mexico ◽  
Twelfth Century ◽  
Residential Mobility ◽  
Environmental Conditions ◽  
Movement Patterns ◽  
The Relationship ◽  
Lines Of Evidence ◽  
Site Abandonment

Abandonments of residential sites by prehistoric farmers are most often explained as failures or responses to poor social or environmental conditions. These perspectives ignore the role of residential mobility among farmers as a regionally sustainable approach to land use. To understand the various reasons for abandonment of residential sites, movement patterns at both site and regional scales must be empirically linked. In this study of the eastern Mimbres area of southwestern New Mexico, we examine the relationship between site and regional occupation patterns. Rather than assume that site abandonment implies regional depopulation and that site abandonments are responses to stress or crisis, we use multiple lines of evidence to document the occupational histories of sites in an effort to evaluate whether the abandonment of villages correlates with regional abandonment. Architectural, ceramic, and chronometric data provide evidence for occupational continuity and growth of small residential sites during the twelfth century in the eastern Mimbres area in the context of the depopulation of large villages. This regional reorganization in settlement suggests a strategy for maintaining regional occupational continuity.

scholarly journals An evaluation of historical fire occurrence, drought, and the El Nio Southern Oscillation in the greater Cross Timbers region, U.S.A.

2017 ◽  
Author(s):  
◽  
Molly Rooney
Keyword(s):  
Land Use ◽  
Fire Regime ◽  
Regional Scale ◽  
Regional Level ◽  
Cross Timbers ◽  
Fire Occurrence ◽  
Wildfire Occurrence ◽  
Tree Ring Data ◽  
The Relationship

A concern over wildfire occurrence, and its relationship to drought and a changing climate has brought increased focus to the interface between the public and fire. Multiple factors, including an increase in fuel loading from decades of continuous fire suppression, changes in land use and ownership, and management strategies, are dampening the success of wildfire suppression rates in some ecosystems. Wildfire occurrence is influenced by many factors ranging from drought and climate oscillations at the regional level to fuel availability and land-use at the site level. This study evaluates and explores the extent, frequency, seasonality, and severity of fires across the Cross Timbers, and through time. Historical fire events were reconstructed at three new study sites in unrepresented geographic locations. Fire event chronologies were developed from fire scars spanning three centuries. These chronologies were compared with data from ten existing sites to evaluate fire regime characteristics and changes at a regional scale. Findings suggest that, while fire frequency has increased following EuropeanAmerican Settlement, fire severity has trended downward. Site differences in fire occurrence exist across the greater Cross Timbers region. The results of this study indicate a prevalence of dormant season fire across the greater Cross Timbers region. Fire events were 2-7 times more frequent when considered at a regional scale. Some of the strongest ENSO signals yet detected in any tree-ring data worldwide are in post oak chronologies of Texas and Oklahoma. Little is known about how the role of climate differs in driving fire occurrence at the site to regional scale. In this region, many studies have attempted to explore how climate drives fire at the site level, but inconsistencies in the results of these studies leave questions about the comparability of these conclusions, and the role of climate in altering climate activity at the regional scale. This study assessed the relationship between climate patterns on fire occurrence in the southcentral U.S. and evaluated the independent and interactive influences of drought and the ENSO on fire occurrences at both site and regional levels. The relationship between fire occurrence and drought was largely unclear at the site scale, but drought was found to be a significant driver of fire synchrony at the regional scale. Drier than expected conditions were observed in the year of fire events at the regional level. This relationship was less apparent in the post-European-American Settlement period.

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