نتایج جستجو برای: natural forest

تعداد نتایج: 576922  

2010
N. Mbahin S. K. Raina E. N. Kioko J. M. Mueke

Prospects for development of a wild silk industry in Africa would be improved if silkworm survival during mass production could be improved. A study on the survival of the Boisduval silkworm, Anaphe panda (Boisduval) (Lepidoptera: Thaumetopoeidae) was conducted with and without protection by net sleeves in two different forest habitats (natural and modified) in the Kakamega forest of western Ke...

Journal: :desert 2006
a. kelarestaghi h. ahmadi m. jafari

land use change may influence many natural phenomena and ecological processes, including runoff, soil erosion, sedimentation and soil conditions. decreasing of forest area in the north of iran is one of the critical problems in recent years. the aims of this study are to detect land use changes between 1967 to 2002 using satellite images of land sat 7 etm+ (2002), aerial photos and digital topo...

جمشید مختاری, , حمید جلیلوند, , سید فضل الله عمادیان, , سید احسان ساداتی, , مسعود طبری, ,

The present research was conducted to find the influence of some topographic factors on distribution of large-leaved lime (Tilia platyphyllos Scop.) and its natural regeneration characteristics in "Vaz" forest (northern Iran). After identification of site and preparation of topography map, selective sampling method was carried out for tree inventory in plots. The sample plots were circular in 1...

2014
Wei Chen Kazuyuki Moriya Tetsuro Sakai Lina Koyama Chunxiang Cao

Forest fire is a common disturbance factor, especially in boreal forests. The detection of forest disturbance and monitoring of post-fire forest recovery are crucial to both ecological research and forest management. The Greater Hinggan Mountain area of China is rich in forest resources, but also has a high incidence of forest fires. After the most serious forest fire in the history of P. R. Ch...

2017
Lei Zhang Yanfang Liu Xiaojian Wei

Forest fragmentation, the process of changing original large and intact forest patches into smaller and isolated areas, significantly influences the balance of surface physical environment, biodiversity, and species richness. Sufficient knowledge of forest fragmentation is necessary to maintain ecological balance and promote sustainable resource utilization. This study combines remote sensing, ...

2014
Ram Avtar Rikie Suzuki Haruo Sawada

Forests play a vital role in terrestrial carbon cycling; therefore, monitoring forest biomass at local to global scales has become a challenging issue in the context of climate change. In this study, we investigated the backscattering properties of Advanced Land Observing Satellite (ALOS) Phased Array L-band Synthetic Aperture Radar (PALSAR) data in cashew and rubber plantation areas of Cambodi...

2015
Basil V. Iannone Christopher M. Oswalt Andrew M. Liebhold Qinfeng Guo Kevin M. Potter Gabriela C. Nunez-Mir Sonja N. Oswalt Bryan C. Pijanowski Songlin Fei

Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA, USDA Forest Service Southern Research Station, Knoxville, TN, USA, USDA Forest Service Northern Research Station, Morgantown, WV, USA, USDA Forest Service Southern Research Station, Asheville, NC, USA, Department of Forestry and Environmental Resources, North Carolina State University, Research Triangle Pa...

2014
Nilam Kayastha Michael J. Falkowski Michael A. Wulder Asim Banskota

6 Asim Banskota , Nilam Kayastha, and Michael J. Falkowski. Department of Forest 7 Resources, University of Minnesota, St. Paul, Minnesota, USA. 8 9 Michael A. Wulder and Joanne C. White. Canadian Forest Service (Pacific Forestry 10 Centre), Natural Resources Canada, Victoria, British Columbia. 11 12 Robert E. Froese. School of Forest Resources and Environmental Science, Michigan 13 Technologic...

2017
Shawn Fraver Mehdi Tajvidi Anthony W. D'Amato Daniel L. Lindner Jodi A. Forrester Amy M. Milo

Complete List of Authors: Fraver, Shawn; University of Maine, School of Forest Resources Tajvidi, Mehdi; University of Maine, School of Forest Resources DAmato, Anthony; University of Vermont, Rubenstein School of Environment and Natural Resources Lindner, Daniel; US Department of Agriculture Forest Service, Northern Research Station Forrester, Jodi; North Carolina State University, Department ...

2011
MARGARET M. CARREIRO WAYNE C. ZIPPERER

The responses of urban park woodlands to large disturbances provide the opportunity to identify and examine linkages in social-ecological systems in urban landscapes.We propose that the Panarchy model consisting of hierarchically nested adaptive cycles provides a useful framework to evaluate those linkages. We use two case studies as examples – Cherokee Park in Louisville, Kentucky, USA and Tij...

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