نتایج جستجو برای: forest management

تعداد نتایج: 943156  

2017
Hidemichi Fujii Masayuki Sato Shunsuke Managi Jose G. Borges

Forest ecosystem services are fundamental for human life. To protect and increase forest ecosystem services, the driving factors underlying changes in forest ecosystem service values must be determined to properly implement forest resource management planning. This study examines the driving factors that affect changes in forest ecosystem service values by focusing on regional forest characteri...

2005
Ge Sun Mark Riedel Rhett Jackson Randy Kolka Devendra Amatya

Water is a key output of southern forests and is critical to other processes, functions, and values of forest ecosystems. This chapter synthesizes published literature about the effects of forest management practices on water quantity and water quality across the Southern United States region. We evaluate the influences of forest management at different temporal and spatial scales, and we recog...

2004
Chris A. Childers Douglas D. Piirto

Fire management has always meant fire suppression to the managers of the chaparral covered southern California National Forests. Today, Forest Service fire management programs must be cost effective, while wilderness fire management objectives are aimed at recreating natural fire regimes. A cost-effectiveness analysis has been developed to compare fire management options for meeting these objec...

2008
Yves Bergeron Pierre J.H. Richard Christopher Carcaillet Sylvie Gauthier Mike Flannigan

Because some consequences of fire resemble the effects of industrial forest harvesting, forest management is often considered as a disturbance having effects similar to those of natural disturbances. Although the analogy http://www.ecologyandsociety.org/vol2/iss2/art6/ (1 of 11) [9/5/2008 10:08:21 AM] Conservation Ecology: Variability in fire frequency and forest composition i...'s southeastern...

2016
Paul D. Pickell Nicholas C. Coops Sarah E. Gergel David W. Andison Peter L. Marshall

Understanding the development of landscape patterns over broad spatial and temporal scales is a major contribution to ecological sciences and is a critical area of research for forested land management. Boreal forests represent an excellent case study for such research because these forests have undergone significant changes over recent decades. We analyzed the temporal trends of four widely-us...

2005
Kevin L. O’Hara

A general premise of forest managers is that modern silviculture should be based, in large part, on natural disturbance patterns and species' adaptations to these disturbances. An understanding of forest stand dynamics is therefore a prerequisite to sound forest management. This paper provides a brief overview of forest stand development, stand structures, and disturbance regimes and discusses ...

Having accurate quantitative and qualitative information about the state of forest stands, is necessary for any basic management and planning, to reduce the effects of forest degradation. The current study aimed to model the destruction of Hyrcanian forests under the effects of density and volume (per hectare) variables, using logistic regression. In total, 252 plots of 1000 m2 area were measur...

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