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Tian Zhang, Xibin Dong, Huiwen Guan, Yuan Meng, Jiafu Ruan and Zhiyong Wang
Thinning is an important way to adjust and optimize the spatial structure of forests. The study of its impacts support a better understanding of the succession process of secondary forests after interference. To study the changes in forest spatial struct...
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Scott Ford, Jonathan Kleinman and Justin Hart
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Hongxinag Wang,Gongqiao Zhang,Gangying Hui,Yuanfa Li,Yanbo Hu,Zhonghua Zhao
Pág. e056
Aim of the study: Neighborhood-based stand spatial structure parameters can quantify and characterize forest spatial structure effectively. How these neighborhood-based structure parameters are influenced by the selection of different numbers of nearest-...
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Amalesh Dhar,Chris D.B. Hawkins
The mountain pine beetle (Dendroctonus ponderosae Hopkins; MPB) infestation has altered forests of lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) to an unprecedented extent in British Columbia. After an MPB outbreak, advance regen...
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G. Gao,G. Ding,H. Wang,Y. Zang,W. Liang,Y. An,Y. He
Pág. 147 - 151
Aim of study. To improve the quality of monoculture plantations in China.Area of study. structure-based forest management was conducted in Rocky Mountain Area of Northern China.Material and Methods. Stand spatial structure indicators of mingling degree, ...
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Junjun He and Huahui Chen
An LSM-tree (log-structured merge-tree) is a hierarchical, orderly and disk-oriented data storage structure which makes full use of the characteristics of disk sequential writing, which are much better than those of random writing. However, an LSM-tree c...
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María De los Ángeles Soriano-Luna, Gregorio Ángeles-Pérez, Mario Guevara, Richard Birdsey, Yude Pan, Humberto Vaquera-Huerta, José René Valdez-Lazalde, Kristofer D. Johnson and Rodrigo Vargas
The proper estimation of above-ground biomass (AGB) stocks of managed forests is a prerequisite to quantifying their role in climate change mitigation. The aim of this study was to analyze the spatial variability of AGB and its uncertainty between active...
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Justin P. Ziegler, Chad M. Hoffman, Paula J. Fornwalt, Carolyn H. Sieg, Mike A. Battaglia, Marin E. Chambers and Jose M. Iniguez
Shifting fire regimes alter forest structure assembly in ponderosa pine forests and may produce structural heterogeneity following stand-replacing fire due, in part, to fine-scale variability in growing environments. We mapped tree regeneration in eighte...
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Bharat Pokharel, Art Groot, Douglas G. Pitt, Murray Woods and Jeffery P. Dech
Our objective was to model the average wood density in black spruce trees in representative stands across a boreal forest landscape based on relationships with predictor variables extracted from airborne light detection and ranging (LiDAR) point cloud da...
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L. Bilek,J. Remes,D. Zahradnik
Pág. 122 - 138
In this study, the structure and spatial patterns of adjacent beech (Fagus sylvatica L.) forest stands, both those having undergone intensive management and those without management intervention over the last 50 years were analyzed. Data was collected fr...
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Yu-Ting Wu and Fernando Porté-Agel
A numerical study of atmospheric turbulence effects on wind-turbine wakes is presented. Large-eddy simulations of neutrally-stratified atmospheric boundary layer flows through stand-alone wind turbines were performed over homogeneous flat surfaces with f...
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Y. Shan,P. Bettinger,C. Cieszewski,W. Wang
Pág. 468 - 480
We describe here an example of applying particle swarm optimization (PSO) ? a population-based heuristic technique ? to maximize the net present value of a contemporary southern United States forest plan that includes spatial constraints (green-up and ad...
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Pradip Saud, Douglas Cram, Samuel Smallidge and Terrell Baker
Coarse woody debris (CWD) is an important component in the structure and function of southwestern mixed-conifer forest ecosystems. However, fire suppression and exclusion policies have changed the structure and fuel loads, including CWD, during the last ...
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Noureddin Nourian,Shaban Shataee-Joibary,Jahangir Mohammadi
Pág. e074
Aim of study: The objective of the study was the comparative assessment of various spatial resolutions of optical satellite imagery including Landsat-TM, ASTER, and Quickbird data to estimate the forest structure attributes of Hyrcanian forests, Golestan...
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J. Ruiz-Mirazo,J. L. Gonzalez-Rebollar
Pág. 47 - 57
Aim of study: In the Mediterranean, low timber-production forests are frequently thinned to promote biodiversity and reduce wildfire risk, but few studies in the region have addressed such goals. The aim of this research was to compare six thinning regim...
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Yizhuo Zhang, Hantao Liu, Xingyu Liu and Huiling Yu
Due to the complex structure of high-canopy-density forests, the traditional individual tree segmentation (ITS) algorithms based on ALS point cloud, which set segmentation threshold manually, is difficult to adequately cover a variety of complex situatio...
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Mariem Ben-Said,Abdelilah Ghallab,Hajar Lamrhari,José Antonio Carreira,Juan Carlos Linares,Lahcen Taïqui
Pág. e014
Aim of study: Understanding small-scale patterns caused by stochastic factors or community interactions driving forest structure and diversity of Moroccan fir Abies marocana Trab.Area of study: Talassemtane fir forest, Talassemtane National Park, Rif Mou...
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Courtney M. Siegert, Natasha A. Drotar and Heather D. Alexander
Canopy throughfall comprises the largest portion of net precipitation that is delivered to the forest floor. This water flux is highly variable across space and time and is influenced by species composition, canopy foliage, stand structure, and storm met...
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Leena Stenberg, Kersti Haahti, Hannu Hökkä, Samuli Launiainen, Mika Nieminen, Ari Laurén and Harri Koivusalo
A prerequisite for sustainable peatland forestry is sufficiently low water table (WT) level for profitable tree production. This requires better understanding on controls and feedbacks between tree stand and its evapotranspiration, drainage network condi...
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Klaus J. Puettmann, Adrian Ares, Julia I. Burton and Erich Kyle Dodson
A large research effort was initiated in the 1990s in western United States and Canada to investigate how the development of old-growth structures can be accelerated in young even-aged stands that regenerated following clearcut harvests, while also provi...
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