نتایج جستجو برای: forest management

تعداد نتایج: 943156  

1995
Dave Dole

The majority of forest land in the U.S. is owned by individuals and institutions that are not directly involved in the forest products industry. Much of this land is thought to be managed inefficiently, but the reasons for this are unclear. This article focusses on three possible factors: information and transactions costs; nonfinancial forest values; and liquidity constraints. Models for the r...

2003
Ljusk Ola Eriksson Sofia Backéus

If taken into account, climate change will, according to current knowledge, have considerable consequences for forest management. However, there is considerable uncertainty regarding what future climate trajectory will follow. The possibilities to analyze uncertainties like this in terms of optimal forest management problems are limited. This is due to, e.g., lack of appropriate methodology, es...

2016
Harold S.J. Zald Michael A. Wulder Joanne C. White Thomas Hilker Txomin Hermosilla Geordie W. Hobart Nicholas C. Coops

a Department of Forest Engineering Resources and Management, College of Forestry, Oregon State University, Corvallis, OR 97331, USA b Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, Victoria, British Columbia V8Z 1M5, Canada c Integrated Remote Sensing Studio, Department of Forest Resources Management, University of British Columbia, Vancouver, British Columbia V6T 1...

2013
Unai Pascual Eneko Garmendia Jacob Phelps Elena Ojea

Forest loss and degradation remains a leading environmental problem. The long history of sustainable forest management has often failed to meet expectations—constrained by funding, governance, capacity and competing interests. Initiatives from the climate change policy arena are opening new ways for a broader mainstreaming of forest management, specially through foreign aid mechanisms towards R...

2009
Julia Touza Charles Perrings María Luisa Chas Amil

In recent years, forest management has moved towards a landscape approach reflecting a mix of social, environmental and economic values. In this paper, we evaluate the effect on harvesting decisions of the spatial attributes of communal forests in Galicia. We first model the forest landscape management problem within a bioeconomic framework, which allows the identification of optimal clear-cutt...

2009
Douglas J. Shinneman Meredith W. Cornett Brian J. Palik

Restoring altered forest landscapes toward their ranges of natural variability (RNV) may enhance ecosystem sustainability and resiliency, but such efforts can be hampered by complex land ownership and management patterns. We evaluated restoration potential for southern-boreal forests in the 2.1 million ha Border Lakes Region of northern Minnesota (U.S.A.) and Ontario (Canada), where spatially d...

2015
Daniel M. Kashian Michael G. Ryan Willaim H. Romme Daniel B. Tinker Monica G. Turner

See next page for additional authors Follow this and additional works at: http://digitalcommons.unl.edu/jfspresearch Part of the Forest Biology Commons, Forest Management Commons, Natural Resources and Conservation Commons, Natural Resources Management and Policy Commons, Other Environmental Sciences Commons, Other Forestry and Forest Sciences Commons, Sustainability Commons, and the Wood Scien...

2017
Susan Charnley Thomas A. Spies Ana M. G. Barros Eric M. White Keith A. Olsen

This study investigates how federal, state, and private corporate forest owners in a fire-prone landscape of southcentral Oregon manage their forests to reduce wildfire hazard and loss to high-severity wildfire. We evaluate the implications of our findings for concepts of social–ecological resilience. Using interview data, we found a high degree of "response diversity" (variation in forest mana...

2005
Clinton T. Moore W. Todd Plummer Michael J. Conroy

We advocate adaptive programs of decision making and monitoring for the management of forest birds when responses by populations to management, and particularly management trade-offs among populations, are uncertain. Models are necessary components of adaptive management. Under this approach, uncertainty about the behavior of a managed system is explicitly captured in a set of alternative model...

Journal: :journal of sciences, islamic republic of iran 2011
p. salehi shanjani

resource sustainability requires a thorough understanding of the influence of forest management programs on the conservation of genetic diversity in tree populations. to observe how differences in forest management affect the genetic structure of fagus orientalis lipsky (oriental beech), we evaluated thirteen beech sites across hyrcanian forests, based on six microsatellite loci. significant di...

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