Results 81 to 90 of about 7,247 (260)

Wall‐to‐wall Amazon forest height mapping with Planet NICFI, Aerial LiDAR, and a U‐Net regression model

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Tree canopy height is a key indicator of forest biomass and structure, yet accurate mapping across the Amazon remains challenging. Here, we generated a canopy height map of the Amazon forest at ~4.8 m resolution using Planet NICFI imagery and a deep learning U‐Net model trained with airborne LiDAR data.
Fabien H. Wagner   +21 more
wiley   +1 more source

Timber marking and its impact on forest stand (Case study: Shourab district of Golband region) [PDF]

open access: yesمجله جنگل ایران, 2011
Timber marking is one of the most important silvicultural intervention which affects directly on forest stand. This research investigates the impact of timber marking on qualitative and quantitative characteristics of forest stand in Shourab district ...
doaj  

Evaluation of Forest Dynamics Focusing on Various Minimum Harvesting Ages in Multi-Purpose Forest Management Planning

open access: yesForest Systems, 2015
Aim of study: Exploring the potential effects of various forest management strategies on the ability of forest ecosystems to sequester carbon and produce water has become of great concern among forest researchers.
Derya Mumcu Kucuker, Emin Zeki Baskent
doaj   +1 more source

A probabilistic approach to estimating timber harvest location

open access: yesEcological Applications
Abstract Determining the harvest location of timber is crucial to enforcing international regulations designed to protect natural resources and to tackle illegal logging and associated trade in forest products. Stable isotope ratio analysis (SIRA) can be used to verify claims of timber harvest location by matching levels of naturally ...
Truszkowski, J   +12 more
openaire   +2 more sources

Propelled balloons for harvesting and transporting timber [PDF]

open access: yesForestry, 2002
Summary Studies of conventional tractor-based systems in the tropical rainforest of Malaysia have provided convincing evidence that selective logging with acceptable levels of damage requires the exploitation of air-borne systems. Following consideration of helicopter-based systems as used in Malaysia and procedures involving both balloons and airships
openaire   +1 more source

The Hidden Costs of Coffee Production in the Eastern African Value Chains

open access: yesSustainable Development, EarlyView.
ABSTRACT There is increasing recognition that significant hidden costs associated with agrifood systems are not reflected in market prices. Coffee is among the three most traded agricultural commodities in the world and supports the livelihoods of more than 30 million smallholder households.
Annet Adong   +3 more
wiley   +1 more source

Issues concerning Landowner Management Plan Adoption Decisions: A Recursive Bivariate Probit Approach

open access: yesInternational Journal of Forestry Research, 2015
Despite the likely benefits of having a written forest management plan, a small number of landowners in the United States have the one. A recursive bivariate probit model was used to identify the possible relationship between landowners’ decision to ...
Omkar Joshi   +3 more
doaj   +1 more source

Forest balance on the national level.

open access: yesSilva Fennica, 1979
Forest balance is a comparison between the growing stock volume at the beginning and end of a balance period and the gross increment and drain during that period.
Kuusela, Kullervo
doaj   +1 more source

Implications of Expanding Bioenergy Production from Wood in British Columbia: An Application of a Regional Wood Fibre Allocation Model [PDF]

open access: yes
Energy has been produced from woody biomass in British Columbia for many decades, but it was used primarily within the pulp and paper sector, using residual streams from timber processing, to create heat and electricity for on-site use.
Kurt Niquidet   +2 more
core  

Achieving Sustainable Development Goals Through Social Life Cycle Assessment: A Case Study of Portuguese Forest Wood Supply Chains

open access: yesSustainable Development, EarlyView.
ABSTRACT Social considerations are often overlooked in efforts to achieve sustainable development, despite being critical for building equitable and resilient global value chains. This study addresses this gap by applying a social life cycle assessment to three key Portuguese forest wood supply chains—uncoated woodfree paper, natural cork stoppers, and
Andreia Santos   +3 more
wiley   +1 more source

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