Online streaming public participation in forest management planning

Korjus, Henn; Põllumäe, Priit; Kiviste, Andres; Kangur, Ahto; Laarmann, Diana; Sirgmets, Risto; Lang, Mait

doi:10.1515/fsmu-2017-0001

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…Sõjaväeoperatsioonide taktikalise kavandamise puhul on nähtavust piirav puittaimestik oluline tegur (ATP-3.2.1., 2018). Virtuaalreaalsust võimaldavates kaasava metsakorralduse keskkondades mõjutab nähtavus maastikust tekkivat muljet ning võib olla aluseks majandusvõtete kavandamisele (Korjus et al, 2017). Autonoomsete masinate juhtimise süsteemides saab kasutada nähtavuse hinnanguid teekonna või tegevuste eelnevaks kavandamiseks (Li et al, 2020).…”

Section: Discussionunclassified

“…For the tactical planning of military operations, horizontal visibility is an important factor, with short observation zones characteristic in wooded, as opposed to open terrain, and with visibility between trees a relevant determinant for orientation, movement, and fields of fire (ATP-3.2.1., 2018). In virtual platforms of communication, as proposed by Korjus et al (2017) for online-streaming public participation in forest management planning, visibility plays an important role, as parts of a forest will be either exposed or hidden, thereby influencing the participants' overall impression of the constructed landscape. Preliminary path planning according to visibility will help to optimize field operations in the rapidly developing technology of unmanned ground vehicles and autonomous robots (Li et al, 2020), designed to drive through forested landscape or to carry out particular forest management tasks.…”

Section: Introductionmentioning

confidence: 99%

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Options for estimating horizontal visibility in hemiboreal forests using sparse airborne laser scanning data and forest inventory data

et al. 2020

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Horizontal visibility v in hemiboreal forest transects was measured in the field and then predicted, both from forest inventory (FI) data and from airborne laser scanning (ALS) data. Stand density N and mean diameter at breast height D were used as arguments in an FI predictive model assuming Poisson distribution of trees on a horizontal plane. It was found that a lack of FI data on forest regrowth and understorey trees caused v to be overestimated. Point cloud metrics of sparse ALS data from summer 2017 and spring 2019 were used as predictive variables for v in regression models. The best models were based on three variables: the 10th percentile of the point cloud height distribution, relative density of returns in a horizontal layer ranging 0.7–2.2 m above the ground, and canopy cover. The models had a coefficient of determination of up to 67% and a residual standard error of less than 25 m. In forests in which fertile soil produces rapid height growth of understorey woody vegetation after recent thinning, visibility was found to be substantially overestimated because the understorey was not detected by the lidar measurements.

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Section: Discussionunclassified

Section: Introductionmentioning

confidence: 99%

Options for estimating horizontal visibility in hemiboreal forests using sparse airborne laser scanning data and forest inventory data

et al. 2020

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“…Lõppkasutaja jaoks saab erinevate võtete visualiseerimisega lihtsustada otsustusprotsessi ning selgitada, milliste raievõtetega soovitatavat puistut/maastikku on võimalik kujundada (Joonis 2). Samuti aitab virtuaalreaalsus edendada kaasavat metsakorraldust (Korjus et al, 2017), aidates huvigruppidele selgitada oma ideid metsade majandamisel (Joonis 3). Joonis 1.…”

Section: Virtuaal-ja Liitreaalsusunclassified

A narrative of virtual and augmented reality in the forest sector

et al. 2019

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With the rapid development in data acquisition and presentation, there is a growing interest in virtual forests and computer visualization tools. Forest owners have become more aware about their property and are interested in applying different forest management methods and silvicultural techniques. The tools are also applicable in assessment of the changes to the landscape as a result of natural and anthropogenic disturbances. Virtual reality offers a good opportunity to test and compare different management options before implementing decisions which can lead to irreversible consequences. Advances in spatial and temporal data collection enable new and practical solutions for analysis and visualization of long-term natural processes with new forestry applications. In the near future, forest owners and managers will have the possibility to make management decisions without the direct need to exit the office. Furthermore, the learning process is more enthralling and also more profound through augmented reality, helping to foster better working practices even before starting a job in the forest sector.

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“…Further, trees at closer range block direct rays of sight. Three-dimensional models of forests are nowadays in widespread use as tools for landscape management planning [2][3][4], and a particular interest in single-tree data arises from the need for forest management planning, tree growth and ecosystem modeling [5][6][7], and the deployment of participatory forest management systems [8]. Aerial photography has been a major data collection method over forested landscapes, indispensable in the furnishing of forest inventories [9,10] with stereophotos.…”

Section: Introductionmentioning

confidence: 99%

Horizontal Visibility in Forests

et al. 2021

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The important variable of horizontal visibility within forest stands is gaining increasing attention in studies and applications involving terrestrial laser scanning (TLS), photographic measurements of forest structure, and autonomous mobility. We investigated distributions of visibility distance, open arc length, and shaded arc length in three mature forest stands. Our analysis was based (1) on tree position maps and TLS data collected in 2013 and 2019 with three different scanners, and (2) on simulated digital twins of the forest stands, constructed with two pattern-generation models incorporating commonly used indices of tree position clumping. The model simulations were found to yield values for visibility almost identical to those calculated from the corresponding tree location maps. The TLS measurements, however, were found to diverge notably from the simulations. Overall, the probability of free line of sight was found to decrease exponentially with distance to target, and the probabilities of open arc length and shaded arc length were found to decrease and increase, respectively, with distance from the observer. The TLS measurements, which are sensitive to forest understory vegetation, were found to indicate increased visibility after vegetation removal. Our chosen visibility prediction models support practical forest management, being based on common forest inventory parameters and on widely used forest structure indices.

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Online streaming public participation in forest management planning

Cited by 4 publications

References 16 publications

Options for estimating horizontal visibility in hemiboreal forests using sparse airborne laser scanning data and forest inventory data

Options for estimating horizontal visibility in hemiboreal forests using sparse airborne laser scanning data and forest inventory data

A narrative of virtual and augmented reality in the forest sector

Horizontal Visibility in Forests

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