نتایج جستجو برای: timber trees

تعداد نتایج: 97259  

2014
Sascha A. Ismail Jaboury Ghazoul Gudasalamani Ravikanth Cheppudira G. Kushalappa Ramanan Uma Shaanker Chris J. Kettle

Tropical agro-forest landscapes are global priority areas for biodiversity conservation. Little is known about the ability of these landscapes to sustain large late successional forest trees upon which much forest biodiversity depends. These landscapes are subject to fragmentation and additional habitat degradation which may limit tree recruitment and thus compromise numerous ecosystem services...

Journal: :Remote Sensing 2012
Masato Katoh François A. Gougeon

A method of counting the number of coniferous trees by species within forest compartments was developed by combining an individual tree crown delineation technique with a treetop detection technique, using high spatial resolution optical sensor data. When this method was verified against field data from the Shinshu University Campus Forest composed of various cover types, the accuracy for the t...

2014
Helmer Belbo

Whole trees from energy thinnings constitute one of many forest fuel sources, yet ten widely applied supply chains could be defined for this feedstock alone. These ten represent only a subset of the real possibilities, as felling method was held constant and only a single market (combustion of whole tree chips) was considered. Stages included in-field, roadside landing, terminal, and conversion...

2003
Werner Krueger

Sustainable natural forest management initiatives in the lowland tropical forests of Bolivia require that cost-effective measures be identified to help maintain timber stand quality and reduce damage to advance regeneration during logging operations. This study considered the potential costs and benefits of including two ‘best’ management practices the pre harvest flagging of future crop trees ...

Journal: :Current Biology 2009
Nigel Williams

those of Brazil and Congo, and their biological diversity is unique. But logging is putting the forest ecosystems under unprecedented pressure — between 1990 and 2005, Indonesia lost 28 million hectares of forest, most of it virgin forest. The government has banned the export of unprocessed logs from the country but timber is regularly smuggled out via Malaysia and Singapore for processing in o...

2016
Andres Susaeta José R. Soto Damian C. Adams Derek L. Allen

Forests play an important role with respect to water resources, and can be managed to increase surfaceand groundwater recharge. With the creation of a forest water yield payment system, privately-owned forests, which comprise the majority of forest area in the Southeastern US, could become an important potential source of additional water supply. The economic tradeoffs between timber revenues a...

2008
Tom Holmes Bill Smith

Sudden oak death (caused by Phytophthora ramorum) is currently having a dramatic impact on the flow of ecosystem services provided by trees and forests in California. Timber species in California are not thought to be at risk of mortality from this pathogen and, consequently, economic impacts accrue to non-market values of trees such as aesthetics, shading, and the knowledge that healthy forest...

Journal: :Archaeonautica 2021

The Bremen-Cog was dated by dendrochronology in the 1960s when discipline its infancy. felling date of winter 1378/79 Weser Uplands established and confirmed 2007. In 2016 a new comprehensive analysis ship made possible. All analysed samples are from trees likely felled last quarter 14th century direct hinterlands Bremen. Furthermore, an attempt at tree morphology reconstruction detailed invest...

Journal: :International Journal of Pharmacy and Pharmaceutical Sciences 2018

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