Results 51 to 60 of about 108,726 (211)

The height of q-Binary Search Trees [PDF]

Discrete Mathematics & Theoretical Computer Science, 2002
q-binary search trees are obtained from words, equipped with a geometric distribution instead of permutations. The average and variance of the heighth computated, based on random words of length n, as well as a Gaussian limit law.
Michael Drmota, Helmut Prodinger
openaire   +6 more sources

UAV-Based Photogrammetric Tree Height Measurement for Intensive Forest Monitoring

Remote Sensing, 2019
The measurement of tree height has long been an important tree attribute for the purpose of calculating tree growth, volume, and biomass, which in turn deliver important ecological and economical information to decision makers.
Stuart Krause, Tanja G.M. Sanders, Jan-Peter Mund, Klaus Greve   +3 more
doaj   +1 more source

Exploring the Potential of GEDI in Characterizing Tree Height Composition Based on Advanced Radiative Transfer Model Simulations

Journal of Remote Sensing
Tree height composition describes the relative abundance of trees in different height levels and performs as a critical characteristic for community ecology.
Shen Tan, Yao Zhang, Jianbo Qi, Yanjun Su, Qin Ma, Jinghao Qiu   +5 more
doaj   +1 more source

Allometric relationships of stand level carbon stocks to basal area, tree height and wood density of nine tree species in Bangladesh

Global Ecology and Conservation, 2020
Forest carbon stocks can be estimated using some easily measureable stand variables, such as basal area, mean or maximum tree height and wood density. Estimation of stand level carbon stocks per unit area of forests or woodlands is of great importance ...
Md. Nabiul Islam Khan, Md. Rafikul Islam, Atikur Rahman, Md. Salim Azad, Abdus Subhan Mollick, Md. Kamruzzaman, Md. Nazmus Sadath, S.M. Feroz, Md. Golam Rakkibu, Alexander Knohl   +9 more
doaj   +1 more source

Estimation of Larch Growth at the Stem, Crown, and Branch Levels Using Ground-Based LiDAR Point Cloud

Journal of Remote Sensing, 2022
Tree growth is an important indicator of forest health and can reflect changes in forest structure. Traditional tree growth estimates use easy-to-measure parameters, including tree height, diameter at breast height, and crown diameter, obtained via ...
Shuangna Jin, Wuming Zhang, Jie Shao, Peng Wan, Shun Cheng, Shangshu Cai, Guangjian Yan, Aiguang Li   +7 more
doaj   +1 more source

Retrieval performance of mangrove tree heights using multiple machine learning regression models and UAV-LiDAR point clouds

International Journal of Digital Earth
Mangroves are vital coastal ecosystems that provide crucial links between land and sea. Tree height is a key indicator for assessing mangroves’ health status. Currently, there are still numerous challenges in estimating mangrove tree height.
Bolin Fu, Linhang Jiang, Hang Yao, Yingying Wei, Mingming Jia, Weiwei Sun, Yanli Yang, Tengfang Deng   +7 more
doaj   +1 more source

Tree height integrated into pantropical forest biomass estimates [PDF]

Biogeosciences, 2012
Aboveground tropical tree biomass and carbon storage estimates commonly ignore tree height (<i>H</i>). We estimate the effect of incorporating <i>H</i> on tropics-wide forest biomass estimates in 327 plots across four continents ...
T. R. Feldpausch, A. Andrade, J. Lloyd, S. L. Lewis, R. J. W. Brienen, M. Gloor, A. Monteagudo Mendoza, G. Lopez-Gonzalez, L. Banin, K. Abu Salim, K. Affum-Baffoe, M. Alexiades, S. Almeida, I. Amaral, L. E. O. C. Aragão, A. Araujo Murakami, E. J. M. M. Arets, L. Arroyo, G. A. Aymard C., T. R. Baker, O. S. Bánki, N. J. Berry, N. Cardozo, J. Chave, J. A. Comiskey, E. Alvarez, A. de Oliveira, A. Di Fiore, G. Djagbletey, T. F. Domingues, T. L. Erwin, P. M. Fearnside, M. B. França, M. A. Freitas, N. Higuchi, E. Honorio C., Y. Iida, E. Jiménez, A. R. Kassim, T. J. Killeen, W. F. Laurance, J. C. Lovett, Y. Malhi, B. S. Marimon, B. H. Marimon-Junior, E. Lenza, A. R. Marshall, C. Mendoza, D. J. Metcalfe, E. T. A. Mitchard, D. A. Neill, B. W. Nelson, R. Nilus, E. M. Nogueira, A. Parada, K. S.-H. Peh, A. Pena Cruz, M. C. Peñuela, N. C. A. Pitman, A. Prieto, C. A. Quesada, F. Ramírez, H. Ramírez-Angulo, J. M. Reitsma, A. Rudas, G. Saiz, R. P. Salomão, M. Schwarz, N. Silva, J. E. Silva-Espejo, M. Silveira, B. Sonké, J. Stropp, H. E. Taedoumg, S. Tan, H. ter Steege, J. Terborgh, M. Torello-Raventos, G. M. F. van der Heijden, R. Vásquez, E. Vilanova, V. A. Vos, L. White, S. Willcock, H. Woell, O. L. Phillips   +85 more
doaj   +1 more source

Tree Height Growth Modelling Using LiDAR-Derived Topography Information

ISPRS International Journal of Geo-Information, 2021
The concepts of ecotopes and forest sites are used to describe the correlative complexes defined by landform, vegetation structure, forest stand characteristics and the relationship between soil and physiography.
Milan Kobal, David Hladnik
doaj   +1 more source

A photographic method for measurement of tree height: More accurate and simpler than other methods? [PDF]

, 2021
E. Fulkerson David
openalex   +1 more source

Development of mobile application for tree height measurement using geometric principle: Establishing global database of tree height and data

Smart Agricultural Technology
Accurate measurement of tree height is essential for ecological research, forest management, and carbon sequestration assessments. Traditional tools such as clinometers often face limitations due to terrain complexity, tree species variability, and ...
Mubarak Mahmud, Jianhong Lin, Mojtaba Houballah, Ibrahim Garba Buba, Laure Barthes   +4 more
doaj   +1 more source