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Height–diameter allometry in African monodominant forest close to mixed forest
Journal of Tropical Ecology, 2021AbstractAfrican monodominant forests are frequently formed byGilbertiodendron dewevrei(De Wild.) J. Leonard and commonly found close to mixed forests. However, previous studies have ignored differences between these two forest types in height–diameter allometry, which is extremely important for aboveground biomass (AGB) estimates.
Grace Jopaul Loubota Panzou +3 more
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Forest Stand Height Estimation
2019The measurement of forest structural characteristics is important for a variety of Monitoring, Reporting, and Verification (MRV) protocols in resource management.\r\nOne characteristic of particular importance is Forest Stand Height (FSH), or the average height of trees in a forest stand. In this context, FSH can be used an indicator\r\nof the age of a
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Robust TomoSAR focusing for forest height retrieval
2018 IEEE International Conference on Environmental Engineering (EE), 2018This paper aims to discuss and present analysis on robust reconstruction of vertical structure of forested area suing multi-baseline synthetic aperture radar (SAR) data. To deal with problem of low signal to noise (SNR) ratio, robust non-local (NL) techniques of covariance matrix estimation are employed and compared with classical multi-looking ...
Aghababaee, Hossein +3 more
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Impacts of topography for forest height estimation
2012 First International Conference on Agro- Geoinformatics (Agro-Geoinformatics), 2012Forest height is one of the important ecological elements and its estimation has been developed recent years. Forest height estimation is usually obtained through the scattering centers between canopy and ground using Pol-InSAR data. There are three classes of method for forest height estimation, phase-difference between interferograms, coherence ...
Wenmei Li +5 more
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Forest height estimation from X-band SAR
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004Forest stand height is an important indicator of standing biomass for management purposes as well as for the assessment of carbon storage. In this paper we assess Intermap Star-3i X-band SAR interferometry products for forest height estimation. DEM data sets are initially assessed for accuracy, and are then used to estimate forest height.
E.D. Wallington +2 more
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Bat Activity at Nacelle Height Over Forest
2017The number of wind power facilities (wind farms) has rapidly increased in Germany, with a number of these constructed in forested areas. As most bat species use forests to forage and roost, concerns have been raised in relation to the potentially higher collision risk with wind turbines in forests than in open landscapes.
Hendrik Reers +3 more
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The Height of Factorization Forests
2008We show that for every homomorphism from A+to a finite semigroup Sthere exists a factorization forest of height at most 3 i¾? Si¾? i¾? 1. Furthermore, we show that for every non-trivial group, this bound is tight. For aperiodic semigroups, we give an improved upper bound of 2 i¾? Si¾? and we show that for every ni¾?
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Three-Baseline InSAR Estimation of Forest Height
IEEE Geoscience and Remote Sensing Letters, 2014In this letter we propose a three-baseline approach to the extraction of forest tree height from synthetic aperture radar data. Three polarimetric–interferometric pairs are used to constrain a physical model that relates forest parameters to multiple repeat-pass coherence observations.
Marco Lavalle, Kosal Khun
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Boreal Forest Low Antenna Height Propagation Measurements
IEEE Transactions on Antennas and Propagation, 2016This paper presents the results of the first propagation measurement campaign conducted in the 2.4 GHz industrial, scientific and medical (ISM) band for low antenna heights in a North American boreal forest. The $2 \times 1$ multiple-input, single output measurements capture propagation conditions for wireless peer-to-peer or sensor networks in ...
Devin P. Smith +2 more
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Height of Crown Scorch in Forest Fires
Canadian Journal of Forest Research, 1973A relation between fire behavior and crown scorch height is derived from measurements on 13 experimental outdoor fires. The range of data includes fire intensities from 16 to 300 kcal/s-m, and scorch heights from 2 to 17 m. The results agree with established theory that scorch height varies with the 2/3 power of line-fire intensity. The effects of air
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