Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 65 for “"tree cover"”.
-
Roots of Enquiry: Farmers, Forests and Tree Cover Change in Kwahu East, Ghana
… Kwahu East, Ghana, their research concluded that tree cover is declining. They hypothesised that this could be affecting the birds’ wintering habitat and wanted to understand better what social and economic factors are impacting on trees in the local area. They were also interested in exploring …
-
Assessing Landscape Change in Highland Peru with an Emphasis on Tree Cover Change, 1948-2012
<p>Tree cover change was examined around three cities in the central Andes of Peru, 1948-2012, using repeat photography, remote sensing, and ethnographic methods. Forest transition theory provided a framework to study the causes of the changes observed. The repeat photography results show that …
-
Establishing dose-response curves for the impact of urban forests on recovery from acute stress and landscape preference
… amount of nature is enough to induce stress recovery effects, whether increases in the tree cover density produce additional stress recovery effects, or even if the relationship is linear. Lack of this knowledge prevents landscape architects from making science-based design and management …
-
Essays on the Non-market Valuation and Optimal Control of Bio-invasions in Urban Forest Resources
… of which, two involve assessing the value of tree cover in urban communities and the other evaluates cooperative management of an invasive species by urban communities. The first chapter summarizes the three topics and briefly describes the motivation, methods applied and main conclusions in …
-
Spatio-temporal change in riparian woodlands of the Kruger National Park: drivers and implications
… decreasing riparian woodland and a loss of large trees along the rivers of the Kruger National Park (KNP) over the last century. These habitats occupy a tiny fraction of the park’s surface area but fulfil critical ecological functions and provide several ecosystem services. Little research has, …
-
Assessing Landscape Change in Western Honduras, 1957-2010
… and 2010, and specifically focuses on changes in tree cover. Results from repeat photography and satellite classification show an increase in tree cover. Spatial statistics indicate that increases in shade coffee production may also be related to much of the observed increases in tree cover. …
-
Living in a changing world: an integrated approach to documenting and understanding medium to long-term vegetation changes in three contrasting land use systems in a mesic savanna, Nothern Zululand, South Africa
… of evidence suggesting that the balance between trees and grasses in savannas and grasslands has been disrupted in the recent past. Numerous studies from around the world have reported an increasing woody component at the expense of the grass layer. The causes most frequently cited for this shift …
-
The Amenity Value of Trees: a Meta-analysis of Hedonic, Property-value Studies
Tree species migration as a result of climate change may alter the composition of trees in local communities. Shifts in tree diversity, stand age, species predominance and the overall number of trees are potential changes. Community tree programs may also change the characteristics of local trees …
-
Modelling the Hydrologic Impact of Land Cover on Stormwater Detention Basins in Harris County, TX
… flooding and erosion. These basins vary in land cover, with some covered by trees and others by grass. This study assessed how land cover influences the hydrologic water balance, runoff, infiltration, evaporation, and peak discharge by simulating detention basins as flat sub catchment using the …
-
Applications of deep learning and computer vision in large scale quantification of tree canopy cover and real-time estimation of street parking
… to image and video data to quantify urban tree cover and street parking utilization. Large-scale and accurate quantification of urban tree cover is important towards informing government agencies in their public greenery efforts, and useful for modelling and analyzing city ecology and urban …
-
Roads, Rights, and Rewards: Three Program Evaluations in Environmental and Resource Economics
… rural roads can contribute to a reversal of tree cover loss. Prior literature shows roads to be strong drivers of deforestation; however, I hypothesize that in some settings the opposite relationship may hold. Roads may (1) increase the relative productivity of labor in non-agricultural …
-
Essays on Environmental Economics with a Focus on Non-market Valuation
… horticulture industry (in Chapter 2), and urban tree cover's impact on residential location decision making in Milwaukee, WI (in Chapter 3). Chapter 2 evaluates the economic effects of labeling plants grown with water-recycling technology (WRT) practices in selected nursery operations in the …
-
Tree Canopy Effects on Roof-Harvested Rainwater in East Texas
… collected from roofs without any overhanging tree vegetation, rainwater collected from roofs under predominantly Southern yellow pine tree cover, and rainwater collected from roofs under predominantly hardwood tree cover. Rainwater was collected from these roofs for one year. The effects of …
-
The Effect of Tree Shade and Snowpack Cover on Pavement Surface Temperature
The effects of tree shade on the surface and internal temperature of pavement structures can be significant throughout the year. While much work has been done in researching the influence of tree cover on localized urban heating during hot summer months, less effort has been put towards the …
-
Planting trees, planting hope: an analysis of the role of urban forestry in addressing environmental inequality in Cape Town
The presence of trees in urban spaces has been identified as providing numerous environmental, psychosocial, and economic benefits. However, rather than being an equally distributed resource which all city residents share, tree cover in Cape Town, South Africa tends to be a marker of environmental …
-
Food Plot and Habitat Characteristics Associated With Ring-Necked Pheasant Use of Winter Food Plots in East-Central South Dakota
… pheasant use of food plots. Area of peripheral tree cover, even with dense understory, was negatively associated with food plot use by pheasants. For the 4-year data set, peripheral area of dense wetland emergents, and tall (>76 cm) and medium (>30-76) grass were positively associated with …
-
Effects of pretreatment tree dominance and conifer removal treatments on plant succession in sagebrush communities
… of conifers decreases perennial vegetation cover and density, and lowers ecosystem resilience and resistance of the shrub-grass dominated state. Successional trajectories following disturbance are highly dependent upon residual species abundance, composition, and resulting structure. …
-
Exploring the potential impacts of global change on the woody component of of South African savannas
Land cover change, elevated CO2 and associated climate change are driving changes in ecosystem structure and function across the world. These changes are best described and understood in northern hemisphere temperate systems. Studies, models and reports from these regions are therefore often used …
-
Investigating the effects of environmental variables on martial eagle breeding performance in the Kruger National Park
… environmental variables (e.g. climate, land cover, tree cover, fire and elephant abundance) within each territory correlated with martial eagle breeding performance in the hope that we may better understand which variables affect martial eagles breeding performance and whether these may have …
-
Comparing Phylogenetic and Deep Learning Methods to Predict Seed Dispersal Mode
Increasing tree cover is a promising natural climate solution to reduce carbon under the pressing global warming. Seed dispersal is a key process in natural forest regrowth, where seeds are moved away from parent plants to establish new growth. Dispersal modes include biotic and abiotic methods, …
Page 1 of 4