A5038657612- Remote Sensing and LiDAR Applications
- Forest ecology and management
- Forest Ecology and Biodiversity Studies
- Remote Sensing in Agriculture
- Forest Management and Policy
- Plant Water Relations and Carbon Dynamics
- Tree Root and Stability Studies
- 3D Surveying and Cultural Heritage
- Plant Ecology and Soil Science
- Botany and Plant Ecology Studies
- Forest Biomass Utilization and Management
- Species Distribution and Climate Change
- Manufacturing Process and Optimization
- Effects of Radiation Exposure
- Bioenergy crop production and management
- Cardiac, Anesthesia and Surgical Outcomes
- Radiation Dose and Imaging
- Seedling growth and survival studies
- Land Use and Ecosystem Services
- Research in Social Sciences
- Forest Insect Ecology and Management
University of Helsinki
2015-2024
Finnish Geospatial Research Institute
2015-2024
University of Eastern Finland
2024
Aalto University
2024
The last two decades have witnessed increasing awareness of the potential terrestrial laser scanning (TLS) in forest applications both public and commercial sectors, along with tremendous research efforts progress. It is time to inspect achievements remaining barriers TLS-based investigations, so further application are clearly orientated operational uses TLS. In such context, international TLS benchmarking project was launched 2014 by European Spatial Data Research Organization coordinated...
Interest in measuring forest biomass and carbon stock has increased as a result of the United Nations Framework Convention on Climate Change, sustainable planning resources is therefore essential. Biomass estimates are based large area growing volume provided by national inventories (NFIs). The for NFIs depend stem individual trees. Data collection formulating models challenging, because amount data required considerable, fact that detailed destructive measurements to provide these...
Forest resource information has a hierarchical structure: individual tree attributes are summed at the plot level and then in turn, plot-level estimates used to derive stand or large-area of forest resources. Due this hierarchy, it is imperative that measured with accuracy precision. With widespread use different measurement tools, also important understand expected degree precision associated these measurements. The most prevalent field species, stem diameter-at-breast-height (dbh), height....
Forests are the most diverse terrestrial ecosystems and their biological diversity includes trees, but also other plants, animals, micro-organisms. One-third of forested land is in boreal zone; therefore, changes forests can shape biodiversity, even at global scale. Several forest attributes, including size variability, amount dead wood, tree species richness, be applied assessing biodiversity a ecosystem. Remote sensing offers complimentary tool for traditional field measurements mapping...
Tree species characterise biodiversity, health, economic potential, and resilience of an ecosystem, for example. classification based on remote sensing data, however, is known to be a challenging task. In this paper, we study the first time feasibility tree using high-density point clouds collected with airborne close-range multispectral laser scanning system – technique that has previously proved capable providing stem curve volume accurately rapidly standing trees. To end, carried out...
Abstract Tree functional traits together with processes such as forest regeneration, growth, and mortality affect tree structure. Forest management inherently impacts these processes. Moreover, structure, biodiversity, resilience, carbon uptake can be sustained enhanced activities. To assess structural complexity of individual trees, comprehensive quantitative measures are needed, they often lacking for current practices. Here, we utilized 3D information from Scots pine ( Pinus sylvestris...
We evaluated a smartphone app (TRESTIMATM) for forest sample plot measurements. The interprets imagery collected from the plots using camera in and then estimates inventory attributes, including species-specific basal areas (G) as well diameter (DgM) height (HgM) of area median trees. were compared to attributes derived tree-wise measurements calipers Vertex measurement device. data consist 2169 measured trees 25 (32 m × 32 m), dominated by Scots pine Norway spruce southern Finland....
Exact knowledge over tree growth is valuable information for decision makers when considering the purposes of sustainable forest management and planning or optimizing use timber, example. Terrestrial laser scanning (TLS) can be used measuring attributes in very high detail. The study aims at characterizing changes individual (e.g., stem volume taper) during a nine year-long period boreal conditions. TLS-based three-dimensional (3D) point cloud data were identifying quantifying these changes....
Tree growth is a physio-ecological phenomena of high interest among researchers across disciplines. Observing changes in tree characteristics has conventionally required either repeated measurements the living trees, retrospective destructively sampled or modelling. The use close-range sensing techniques such as terrestrial laser scanning (TLS) enabled non-destructive approaches to reconstruct three-dimensional (3D) structure trees and communities space time. This study aims at improving...
Detailed observation techniques are needed to reveal the underlying eco-physiological mechanisms driving tree growth processes. Terrestrial laser scanning (TLS) has proven be a feasible technique for characterizing trees, but it still remained unclear whether TLS point clouds and existing cloud processing methods can used capturing even smallest signs of process individual trees. The aim this study was investigate capacity in observing seasonal radial boreal experimental setup included 91...
Monitoring forest growth accurately is important for assessing and controlling carbon stocks that impact, example, the atmospheric CO2 concentration and, consequently, climate change. In prior studies, monitoring with laser scanning methods has resulted in relatively high errors. However, contribution of reference measurement error to uncertainty resolution rarely been analysed, measurements are usually considered mostly flawless. this study, a seven-year-long individual trees was estimated...
The aim of this study was to investigate the capabilities two date satellite-derived image-based point clouds (IPCs) estimate forest aboveground biomass (AGB). data sets used include panchromatic WorldView-2 stereo-imagery with 0.46 m spatial resolution representing 2014 and 2016 a detailed digital elevation model derived from airborne laser scanning data. Altogether, 332 field sample plots an area 256 m2 were for development validation. Predictors describing height, density, variation in...
<ja:p>Information on forest trafficability (i.e. carrying capacity of the floor) is required before harvesting operations in Southern Boreal conditions. It describes seasons when may take place without causing substantial damage to soil using standard logging machinery. The available information have been based subjective observations made during wood procurement planning. For supporting operations, an open access map product has developed provide forests. stands are distributed into classes...
Terrestrial laser scanning (TLS) has been adopted as a feasible technique to digitize trees and forest stands, providing accurate information on tree structural attributes. However, there is limited understanding how variety of changes can be quantified using TLS in boreal conditions. In this study, we assessed the accuracy feasibility quantifying structure forests. We collected data field reference from 37 sample plots 2014 (T1) 2019 (T2). Tree stems typically have planar, vertical,...
Tree growth is a multidimensional process that affected by several factors. There continuous demand for improved information on tree and the ecological traits controlling it. This study aims at providing new approaches to improve understanding of means terrestrial laser scanning (TLS). Changes in stem form volume allocation were investigated during five-year monitoring period. In total, selection attributes from 736 trees 37 sample plots representing different forest structures extracted...
Trees adapt to their growing conditions by regulating the sizes of parts and relationships. For example, removal or death adjacent trees increases space amount light received remaining enabling crowns expand. Knowledge about effects silvicultural practices on crown size shape also quality branches affecting a is, however, still limited. Thus, aim was study structure individual Scots pine in forest stands with varying stem densities due past management practices. Furthermore, we wanted...
Terrestrial laser scanning (TLS) has been adopted as a feasible technique to digitize trees and forest stands, providing accurate information on tree structural attributes. However, there is limited understanding how variety of changes can be quantified using TLS in boreal conditions. In this study, we assessed the accuracy feasibility quantifying structure forests. We collected data field reference from 37 sample plots 2014 (T1) 2019 (T2). Tree stems typically have planar, vertical,...
Tree growth is key forest ecosystem service and essential for carbon sequestration biomass production. However, the intra-seasonal dynamics of tree height stem diameter have been difficult to measure hampering understanding interplay between these processes. Here, we investigated feasibility a laser scanning system in monitoring dynamics, aiming study how vary interact, environmental variables explain within growing season. The experimental design consisted 40 boreal trees equipped with...
Thinning is a forest management activity that regulates the competition between trees within forest. However, effect of different thinning treatments on largely unexplored, especially because difficulty in measuring crown characteristics. This study aimed to investigate how type and intensity affect stem- crown-based based terrestrial laser scanning (TLS) point clouds. The research was conducted three sites southern Finland where Scots pine (Pinus sylvestris L.) dominant tree species. Nine...
Abstract. Biodiversity is commonly referred to as species diversity but in forest ecosystems variability structural and functional characteristics can also be treated measures of biodiversity. Small unmanned aerial vehicles (UAVs) provide a means for characterizing ecosystem with high spatial resolution, permitting measuring physical from viewpoint The objective this study examine the applicability photogrammetric point clouds hyperspectral imaging acquired small UAV helicopter mapping...
Reviewing forest carbon sinks is of the utmost importance in efforts to control climate change. This study focuses on reporting 20-year boreal growth values acquired with airborne laser scanning (ALS). The was examined Kalkkinen research site southern Finland as a continuation several earlier studies performed same area. data for were gathered three totally different systems, namely using Toposys-I Falcon June 2000 and Riegl VUX-1HA miniVUX-3UAV 2021 approximate point densities 11, 1360, 460...