Protecting trees through an inventory and typology : heritage trees in the Karavanke mountains, Slovenia
Cultural heritage ; Information system ; Nature conservation ; Protected area ; Slovenia ; Tree ; Tree species
This paper introduces an advanced approach to natural and cultural heritage inventory for the study of heritage trees. Because trees play different roles in society, different regulations apply to their preservation, which can lead
to inconsistencies in records for heritages trees. The inventory of heritage trees and their types in the study area is based on existing lists of heritage trees, fieldwork and interviews. A new database of heritage trees has been established in which the advantage
Tree-growth response to Enso events in the central Colorado Front Range
The inflence of climate associated with El Niño/Southern Oscillation (ENSO) events on tree growth in the central Colorado Front Range is investigated through the analysis of two high altitude tree-ring chronologies. Dendrochronological techniques
are used to determine if ENSO-related climatic effects are detectable in tree-ring width patterns in the central Colorado Front Range. The form of the tree growth response is identified and the variability of the influence of these events on tree growth
A dendrochronological method of studying tree mortality patterns
This study examines the use of dendrochronological crossdating to determine the dates of death of dead-standing coniferous trees in subalpine forests in the Colorado Rocky Mountains. The objectives were: to evaluate the feasibility of crossdating
as a technique for describing tree mortality patterns; to find out of the general pattern of tree death over time has been continuous or episodic; and to evaluate the use of tree decay characteristics for estimating relative dates of tree death.
Tree planting by tenants in County Down during the eighteenth and nineteenth centuries
Afforestation ; Eighteenth Century ; Forest ; Historical geography ; Nineteenth Century ; Northern Ireland ; Rural landscape ; Tree ; Tree species ; United Kingdom
Registers of tenant tree planting between 1769 and 1909 are examined. 5.13 million trees were planted. Registrations were highest in the decade 1810-29, declining sharply in the mid-1830s. Numbers of trees planted peaked in the 1820-29 and 1830-39
decades as plantations became prominent. Three quarters of trees planted were conifers and larch accounted for 51% of all trees planted. Landscape impacts of planting are discussed in comparison with present woodlands and trees.
Grazing history affects the tree-line ecotone : a case study from Hardanger, Western Norway
Climatic change ; Ecosystem ; Ecotone ; Forest ; Historical geography ; Mountain ; Norway ; Pastureland ; Tree line
This study compares the tree and ground cover of 2 localities having different grazing histories in the tree-line ecotone of Western Norway. Data from the sampling of trees, saplings, seedlings and ground cover, tree age determinations, aerial
photographs, interviews and literature research are used. The results show differences in the structure of the tree-line ecotone with regard to tree-age, height, circumference and the structure of the understory. Ground cover differs in species composition
, mainly with regard to light preferences. Together, the differences stress the importance of site history consideration in order to understand changes in the tree-line ecotone, because dissimilar site histories may create differing local responses
Urban biogeographical analysis of spontaneous tree growth on stone retaining walls
Biogeography ; Hong Kong ; Plant colonization ; Stone wall ; Tree ; Tropical zone ; Urban ecology ; Urban environment ; Vegetation
Stone retaining walls in urban Hong Kong provided vertical habitats for spontaneous colonization by a diversified humid-tropical flora with large trees. A citywide survey assessed wall and tree characteristics to understand wall-tree relationships
and identify conservation candidates. Nonparametric correlations were computed between 28 wall attributes versus tree count, tree biomass, and species-vegetation factors. Most of the 245 walls, with 1275 trees, were in residential areas. Wall height was a key
The sprouting of fluvially deposited trees is an important process for floodplain woodland regeneration along dynamic rivers. This paper investigates how tree size and relative elevation of the location of fluvially deposited trees affects
their survival. The survival of newly deposited trees along the River Tagliamento, Italy, was monitore over 3 field campaigns (2001, 2003 and 2005). A significant negative correlation was found between relative elevation and tree survival, while tree length
Hydrologic inferences from tree-ring studies on the Hawkesbury River, Sydney, Australia
This paper describes the relations among tree growth, flooding, and alluvial morphology on the Hawkesbury River. Specifically, the study aimed at defining changes in tree growth with increasing elevation above mean low water level and to determine
whether introduced trees could be used to make inferences about channel changes in southeastern Australia. The correlation between flood-induced tree damage and reduced growth described by Martens (1992) is assumed valid and is discussed . Investigations
Biomechanical effects of trees on soil and regolith : beyond treethrow
Arkansas ; Conceptual model ; Forest soil ; Regolith ; Sediment transport ; Soil ; Soil properties ; Tree ; United States of America
The aim of this study was to investigate biomechanical effects of trees beyond treethrow, particularly displacement by tree growth and the potential for transport of regolith material into stump holes. Specifically, they sought to document
associated with individual trees. Rocky soils in the Ouachita Mountains in Arkansas were studied.
This paper focuses on the urban biogeographical study of tree quality with regard to habitat conditions that vary mainly by land cover. Statistical analysis, including logistic regression, was used to test the hypothesis that tree performance
is related to extrinsic habitat conditions (planting site, ground cover, land cover, and district) and intrinsic tree traits (species provenance, seasonality, tree dimensions). A total of 6,351 trees were evaluated. District differentiation in tree
performance was related to land cover. Exotic and evergreen species grew better than indigenous and deciduous, offering hints on species-habitat matching. Detailed field and statistical analyses could yield tree-environment information to enhance urban
Farmer initiatives in increasing tree cover in central Nepal
Agricultural land use ; Canopy ; Cultivated land;Cultivated surface ; Land use ; Mountain ; Nature conservation ; Nepal ; Trees
Increases in tree cover in the Jhiku Khola catchment near Kathmandu are recorded by comparing air photos from 1972 and 1989. This contradicts the generalization of continued deforestation in Nepal.―(DWG)
Recent dynamics of subarctic dunes as determined by tree-ring analysis of white spruce, Hudson Bay, Québec
The objectives of this research are twofold : 1) to study the radial-growth patterns on a number of trees growing in dunes and 2) to develop methods based on tree-ring techniques to calculate the accumulation, erosion, and migration rates of several
Preparing a tree planting zone map for landscaping in Hokkaido
Geographical planting distribution of 125 tree species for landscaping in Hokkaido were surveyed by means of questionnaires, and the temperatures parameters which were most closely related to their distribution were examined. By using the isogram
of average annual minimum temperatures partially revised with a Index of Warmth isoline, a tree planting zone map for Hokkaido was prepared. - (SGA)
Transforming the prairie : early tree planting in an Oklahoman town
Afforestation ; Historical geography ; Nineteenth Century ; Oklahoma ; Tree ; United States of America ; University ; Urban development
Study is an examination of the role of tree planting in urban development on the Great Plains and in the making of place in the grassland biome. A. uses Norman, Oklahoma as a case study of a treeless frontier outpost in 1889 that was transformed
Dublin ; Environment ; Inner city ; Ireland ; Private space ; Public space ; Spatial analysis ; Street ; Town ; Tree ; Tree species ; Urban park
This article presents an inventory of trees in Dublin's city centre, defined as the area between the Grand and Royal canals. The results show that there are over 10,000 trees in the study area representing a density of 684 trees km-2 or one tree
to approximately every 50 residents of the city centre. The tree canopy extent when in full foliage was nearly 1 km2 in extent or 6% of the study area. A more detailed analysis of those trees planted along streets shows little species variation but clear
distinction in the sizes of trees, which is indicative of the age of planting. These data are used to estimate the carbon stored in Dublin's trees.
The northern limit of trees in Labrador: a discussion
The Authors have found that the northernmost trees in Labrador occur at Napaktok Bay on the Labrador coast, as suggested by early explorers, rather than along either Nakvak Brook, Saglek Fiord| or the Hebron Fiord area as suggested by most modern
Reconstruction of past erosional force from tree ring information around the Rokko Mountains, Japan
The AA. investigate the ring widths of a 240-year-old tree, as well as those of 50- to 100-year-old trees in the Rokko Mountains and derived long-term trends in ring width. Rainfall characteristics and tree rings in the area just north of the Rokko