نتایج جستجو برای: forest stands

تعداد نتایج: 123621  

2008
Susan C. Loeb Thomas A. Waldrop

Forest managers often use thinning and prescribed burning to reduce the risk of wildfire and insect outbreaks. Because thinning and burning alter the structure of forest stands and may affect insect prey abundance, they may change the suitability of stands for bats. Our objective was to test the effects of thinning and burning on bat foraging and commuting activity in pine stands in the Clemson...

2008
Robert W. Gray Bruce A. Blackwell

The restoration of dry forest ecosystems in the Squamish Forest District in the past has focused on treating stands with no prior history of selective harvest and containing a large population of remnant historical stand structure. Many 60 to 90 year old stands that date to turn of the century selective harvest operations also exist in the district. These stands contain very high densities of D...

Journal: :Frontiers in forests and global change 2023

EDITORIAL article Front. For. Glob. Change, 05 June 2023Sec. Forest Management Volume 6 - 2023 | https://doi.org/10.3389/ffgc.2023.1208267

Forest structure consider the spatial arrangement of trees characteristics such as age, size, species, gender and so on is.This study aimed to investigate the structural diversity of three one-hectare stands in the gap making phase, were studied. For this purpose, three sample plots with a one hectare area were selected in Asalem beech stands which belonged to the structural features of the gap...

Journal: :Anais da Academia Brasileira de Ciências 2014

Journal: :JOJ Horticulture & Arboriculture 2018

2011
Adam Kwiatkowski

During a period of three years (2006-2008) the carabid fauna in wet and humid forest habitats of different stages of succession was studied at the Puszcza Knyszynska (north-east part of Poland). The aim of this study was to determine how the assemblages of the carabid fauna change in relation to the ongoing process of succession. Using pitfall traps, 24 plots were sampled. The plots were locate...

2005
Cliff D. Anderson Donald L. Grebner David L. Evans Ian A. Munn Keith L. Belli John C. Stennis

Stand boundary identification is an important factor in forest management planning that is dependent on the quality and resolution of the imagery available. We identified stand boundaries on an area within the John C. Stennis Space Center using two sources of multispectral imagery, IKONOS and QuickBird. Forest stands were delineated using eCognition v3.0. Segmentation was performed by initially...

1988
Anne C.S. McIntosh Andrew N. Gray Steven L. Garman

McIntosh, Anne C.S.; Gray, Andrew N.; Garman, Steven L. 2009. Canopy structure on forest lands in western Oregon: differences among forest types and stand ages. Gen. Tech. Rep. PNW-GTR-794. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 35 p. Canopy structure is an important attribute affecting economic and ecological values of forests in the P...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید