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.
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Showing 1 to 15 of 15 for “"forest inventories"”.
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Efficient Sampling Methods for Forest Inventories and Growth Projections
For operational forest management, a forest inventory is commonly conducted to determine the timber stocking and the value of standing trees in a stand. With time and costs constraints, appropriate sampling designs and models are required to perform the inventory efficiently, as well as to obtain …
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Algorithms for precision forest inventories based on terrestrial point clouds
… nuevas herramientas para los inventarios forestales de precisión a través del desarrollo de algoritmos aplicables a nubes de puntos terrestres, que facilitan la obtención de una representación geométrica precisa de los árboles en un tiempo razonable. Además, esas mediciones eliminan la …
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Combined use of airborne laser scanning and hyperspectral imaging for forest inventories
… as a general objective the estimation of forest inventory parameters (e.g. trunk location, height, basal area, crown area, species, etc..) from the combination of Airborne Laser Scanning (ALS) and Hyperspectal Imaging (HI). The research is centered around three main topics: the development …
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Decision Support for Operational Plantation Forest Inventories through Auxiliary Information and Simulation
Informed forest management requires accurate, up-to-date information. Ground-based forest inventory is commonly conducted to generate estimates of forest characteristics with a predetermined level of statistical confidence. As the importance of monitoring forest resources has increased, budgetary …
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EVALUATING THE PERFORMANCE OF BIOMETRIC APPROACHES FOR VERIFICATION AND MONITORING IN COMMERCIAL FOREST CARBON ACCOUNTING
… emissions through natural ecosystem management, Forest-based Climate Solutions (FbCS) are believed to offer the greatest mitigation potential. As more funds are allocated towards FbCS deployment, questions arise regarding their actual mitigation potential and the extent to which status-quo …
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A comparison of forest growth and yield models for inventory updating
… growth and yield models can be used to update forest inventories and a GIS is a common method for maintaining forest inventory data, this compatibility provided a method to rapidly update past forest inventory records. This system was used to evaluate four different loblolly pine growth and …
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Mapping mixed and fragmented forest associations with high spatial resolution satellite imagery : capabilities and caveats
… but has been too coarse for use in detailed forest inventories where stand level structural and compositional information is desired. Recently available high spatial resolution satellite imagery may be well suited to mapping fine-scale components of ecosystems, however, this remains an area …
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From Small to Large: Modeling at the Scale of Ecological Processes to Understand Temperate Forest Range Limits, Biomass, and Traits
… observational datasets, national forest inventories from temperate regions, with the aim to understand how forest communities may respond to future climate. In each chapter, the methodological focus on scale is conceptually linked with the ecological questions posed.</p><p>In the …
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Rehabilitation and sustainable use of degraded community forests in the Bale Mountains of Ethiopia
… utilisation of natural resources, particularly forests. However, the exclusion of local people from decisions relating to the use and management of the forests has resulted in a situation whereby they utilise the forest resources illegally and feel no responsibility for the condition of the …
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Large-area forest assessment and monitoring using disparate lidar datasets
… by government agencies, primarily for non-forestry purposes. That is, they were collected mostly to aid in the creation of digital terrain models and to support hydrological and engineering assessments. Such data is not ideal for forestry purposes mainly due to the low pulse density per …
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Wetlands Characterization in the Congo River Basin Using Multi-source Remotely Sensed Data and Field Survey
… This map is then combined with vegetation and forest cover change maps published in Potapov et al. (2012) to derive a map including forested wetlands as a thematic class. Using population density data, we investigated whether high terra firma population density and low percent remaining terra …
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Drivers of forest dynamics: Joint effects of climate and competition
… thesis addresses different aspects of forest dynamics and possible changes due to climate change. Various modelling approaches are used to explore joint effects of climate and competition on forest dynamics with a focus on temperate forests. Motivated by scientific interest, this thesis …
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Análisis de la distribución espacial de biomasa aérea para el bosque nativo entre las regiones del Maule y Los Lagos
… Sin embargo, la cuantificación desde inventarios forestales para este componente resulta desafiante dada la extensión espacial que presentan los bosques. Para sopesar este desafío, se han utilizado productos grillados, los cuales pueden variar significativamente según el método utilizado para la …