In economically optimal management, trees that are removed in a thinning treatment should be selected on the basis of their value, relative value increment and the effect of removal on the growth of remaining ...
Authors: Timo Pukkala, Erkki Lähde and Olavi Laiho
We explore the factors affecting the optimal plot design (size and type as well as the subsample tree selection strategies within a plot) and their relative importance in defining the optimal plot design in am...
Around 2000 plant species occur naturally in Lorestan Province of which 250 species are medicinal and myrtle is one of them. Myrtle is a shrub whose leaves and fruits have medicinal value and thus, if managed ...
Authors: Neda Amiri, Seyed F. Emadian, Asghar Fallah, Kamran Adeli and Hamid Amirnejad
Biomass regression equations are claimed to yield the most accurate biomass estimates than biomass expansion factors (BEFs). Yet, national and regional biomass estimates are generally calculated based on BEFs,...
This paper explored the long-term, ceteris-paribus effects of potential CO2 fertilization on the global forest sector. Based on the findings of Norby et al. (PNAS 2005, 102(50)) about forest response to elevated ...
Coarse woody debris (CWD) is an important element of forest structure that needs to be considered when managing forests for biodiversity, carbon storage or bioenergy. To manage it effectively, dynamics of CWD ...
Authors: Steffen Herrmann, Tiemo Kahl and Jürgen Bauhus
Monitoring the changing pattern of vegetation across diverse landscapes through remote sensing is instrumental in understanding the interactions of human activities and the ecological environment. Land use pat...
Wildlife and livestock grazing are important products of forest ecosystems, but can be controversial. Herbivory by North American elk and domestic cattle is a contentious management issue throughout western No...
Authors: Heather H. Halbritter and Louis C. Bender
Estimation of tree diversity at broader scale is important for conservation planning. Tree diversity should be measured and understood in terms of diversity and evenness, two integral components to describe th...
National forest resource assessments and monitoring, commonly known as National Forest Inventories (NFI’s), constitute an important national information infrastructure in many countries.
Authors: WeiSheng Zeng, Erkki Tomppo, Sean P. Healey and Klaus V. Gadow
With the loss of species worldwide due to anthropogenic factors, especially in forested ecosystems, it has become more urgent than ever to understand the biodiversity-ecosystem functioning relationship (BEFR)....
Authors: James V Watson, Jingjing Liang, Patrick C Tobin, Xiangdong Lei, James S Rentch and Catherine E Artis
Mangrove restoration seeks to restore or rebuild degraded mangrove systems. The methods of mangrove restoration include ecological projects and restoration-oriented technologies, the latter of which are design...
Authors: Wei Li, Lijuan Cui, Manyin Zhang, Yifei Wang, Yaqiong Zhang, Yinru Lei and Xinsheng Zhao
Monitoring forest health and biomass for changes over time in the global environment requires the provision of continuous satellite images. However, optical images of land surfaces are generally contaminated w...
Bioenergy is re-shaping opportunities and imperatives of forest management. This study demonstrates, through a case study in Scots pine (Pinus sylvestris L.), how forest bioenergy policies affect stand management...
Authors: Tianjian Cao, Kari Hyytiäinen, Henna Hurttala, Lauri Valsta and Jerome K. Vanclay
Remote sensing-based inventories are essential in estimating forest cover in tropical and subtropical countries, where ground inventories cannot be performed periodically at a large scale owing to high costs a...
Authors: Piermaria Corona, Lorenzo Fattorini and Maria Chiara Pagliarella
Most current approaches in forest science and practice require information about structure and growth of individual trees rather than - or in addition to - sum and mean values of growth and yield at forest sta...
Authors: Enno Uhl, Peter Biber, Matthias Ulbricht, Michael Heym, Tamás Horváth, Ferenc Lakatos, Janós Gál, Leonhard Steinacker, Giustino Tonon, Maurizio Ventura and Hans Pretzsch
Prosopis species have been introduced to many areas outside their native range to provide benefits to local communities. Several Prosopis species and their hybrids (hereafter “mesquite”) have, ...
Authors: Ross T Shackleton, David C Le Maitre, Brian W van Wilgen and David M Richardson
Cumulative impacts of wildfires and forest harvesting can cause shifts from closed-crown forest to open woodland in boreal ecosystems. To lower the probability of occurrence of such catastrophic regime shifts,...
Authors: Ahmed El-Guellab, Hugo Asselin, Sylvie Gauthier, Yves Bergeron and Adam A. Ali
Forest management faces a climate induced shift in growth potential and increasing current and emerging new risks. Vulnerability analysis provides decision support based on projections of natural resources tak...
Authors: Matthias Albert, Jan Hansen, Jürgen Nagel, Matthias Schmidt and Hermann Spellmann
The global network of eddy-covariance (EC) flux-towers has improved the understanding of the terrestrial carbon (C) cycle, however, the network has a relatively limited spatial extent compared to forest invent...
Authors: Colin J Ferster, JA (Tony) Trofymow, Nicholas C Coops, Baozhang Chen and Thomas Andrew Black
The occurrence of aspen trees increases the conservation value of mature conifer dominated forests. Aspens typically occur as scattered individuals among major tree species, and therefore the inventory of aspe...
Authors: Matti Maltamo, Annukka Pesonen, Lauri Korhonen, Jari Kouki, Mikko Vehmas and Kalle Eerikäinen
Decision making to mitigate the effects of natural hazards is a complex undertaking fraught with uncertainty. Models to describe risks associated with natural hazards have proliferated in recent years. Concurr...
Estimation of forest biomass on the regional and global scale is of great importance. Many studies have demonstrated that lidar is an accurate tool for estimating forest aboveground biomass. However, results v...
Authors: Antonio Montagnoli, Sara Fusco, Mattia Terzaghi, Alan Kirschbaum, Dirk Pflugmacher, Warren B Cohen, Gabriella S Scippa and Donato Chiatante
Over the last two decades wildfire activity, damage, and management cost within the US have increased substantially. These increases have been associated with a number of factors including climate change and f...
Authors: David E Calkin, Matthew P Thompson and Mark A Finney
The development of forestry as a scientific and management discipline over the last two centuries has mainly emphasized intensive management operations focused on increased commodity production, mostly wood. T...
Authors: Klaus J Puettmann, Scott McG Wilson, Susan C Baker, Pablo J Donoso, Lars Drössler, Girma Amente, Brian D Harvey, Thomas Knoke, Yuanchang Lu, Susanna Nocentini, Francis E Putz, Toshiya Yoshida and Jürgen Bauhus
Forests are fundamental in maintaining water supplies, providing economic goods, mitigating climate change, and maintaining biodiversity, thus providing many of the world’s poorest with income, food and medici...
Authors: Naeem Shahzad, Urooj Saeed, Hammad Gilani, Sajid Rashid Ahmad, Irfan Ashraf and Syed Muhammad Irteza
Decisions on forest management are made under risk and uncertainty because the stand development cannot be predicted exactly and future timber prices are unknown. Deterministic calculations may lead to biased ...
Analysing and modelling plant growth is an important interdisciplinary field of plant science. The use of relative growth rates, involving the analysis of plant growth relative to plant size, has more or less ...
Forest managers must deal with inherently stochastic ecological and economic processes. The future growth of trees is uncertain, and so is their value. The randomness of low-impact, high frequency or rare cata...
Successional paludification, a dynamic process that leads to the formation of peatlands, is influenced by climatic factors and site features such as surficial deposits and soil texture. In boreal regions, proj...
Authors: Benoit Lafleur, Nicole J Fenton and Yves Bergeron
This article considers threats to a project slipping on budget, schedule and fit-for-purpose. Threat is used here as the collective for risks (quantifiable bad things that can happen) and uncertainties (poorly...
Depending on tree and site characteristics crown biomass accounts for a significant portion of the total aboveground biomass in the tree. Crown biomass estimation is useful for different purposes including eva...
Authors: Krishna P Poudel, Hailemariam Temesgen and Andrew N Gray
Frequent outbreaks of insects and diseases have been recorded in the native forests of western North America during the last few decades, but the distribution of these outbreaks has been far from uniform. In s...
The ‘Khasi hill sal’ forest ecosystem in Meghalaya, India represents the easternmost limit of sal distribution. We tested if tree diversity and compositional heterogeneity of this ecosystem was higher than oth...
Addressing climate change has become a common issue around the world in the 21st century and equally an important mission in Chinese forestry. Understanding the development of monitoring and assessment of fore...
Many tree species in tropical forests have distributions tracking local ridge-slope-valley topography. Previous work in a 50-ha plot in Korup National Park, Cameroon, demonstrated that 272 species, or 63% of t...
Authors: David Kenfack, George B Chuyong, Richard Condit, Sabrina E Russo and Duncan W Thomas
Among the most important aspects of risk and hazard studies relating to forest ecosystems are maximum forest density and density-dependent tree survival.
Different types of growth and yield models provide essential information for making informed decisions on how to manage forests. Whole-stand models often provide well-behaved outputs at the stand level, but la...
In this paper, a regression model for predicting the spatial distribution of forest cockchafer larvae in the Hessian Ried region (Germany) is presented. The forest cockchafer, a native biotic pest, is a major ...
Information about competition responses is mainly available for monospecific stands or mixed stands with a small number of species. Studies on complex multi-species and highly structured forest ecosystems are ...
Authors: Thomas Seifert, Stefan Seifert, Armin Seydack, Graham Durrheim and Klaus von Gadow
Forest ecosystem functioning is strongly influenced by the absorption of photosynthetically active radiation (APAR), and therefore, accurate predictions of APAR are critical for many process-based forest growt...
Authors: David I Forrester, Rubén Guisasola, Xiaolu Tang, Axel T Albrecht, Tran Lam Dong and Guerric le Maire
The minimum set of sub-models for simulating stand dynamics on an individual-tree basis consists of tree-level models for diameter increment and survival. Ingrowth model is a necessary third component in uneve...
Authors: Rita Juma, Timo Pukkala, Sergio de-Miguel and Mbae Muchiri
Distance-dependent individual-tree models have commonly been found to add little predictive power to that of distance-independent ones. One possible reason is plasticity, the ability of trees to lean and to al...
Progress of forest production in response to the environment requires a quantitative understanding of leaf area development. Therefore, it is necessary to investigate the dynamics of seasonal crown foliage in ...
Authors: Sahadev Sharma, A T M Rafiqul Hoque, Kangkuso Analuddin and Akio Hagihara
With mounting global environmental, social and economic pressures the resilience and stability of forests and thus the provisioning of vital ecosystem services is increasingly threatened. Intensified monitorin...
Authors: Stefan Daume, Matthias Albert and Klaus von Gadow
The Siberian moth (Dendrolimus sibiricus) (SM) defoliates several tree species from the genera Larix, Picea and Abies in northern Asia, east of the Urals. The SM is a potential invasive forest pest in Europe beca...
Tectona grandis (teak) is one of the most important tropical timber speciesoccurring naturally in India. Appropriate growth models, based on advanced modeling techniques,are not available but are necessary for th...
Authors: Vindhya Prasad Tewari, Juan Gabriel Álvarez-gonzález and Oscar García
This contribution complements Forest Ecosystems’ Thematic Series on “Forest Observational Studies”. We provide essential clarification regarding the definition and purpose of long-term field studies, review some ...
Authors: XiuHai Zhao, Javier Corral-Rivas, ChunYu Zhang, Hailemariam Temesgen and Klaus v Gadow
Stands having advance regeneration of spruce are logical places to start continuous cover forestry (CCF) in fertile and mesic boreal forests. However, the development of advance regeneration is poorly known.
Authors: Olavi Laiho, Timo Pukkala and Erkki Lähde
