نتایج جستجو برای: forest structure

تعداد نتایج: 1663160  

Journal: :محیط شناسی 0
علی جعفری استادیار گروه علوم جنگل دانشکدۀ منابع طبیعی دانشگاه شهرکرد زهرا آرمان دانشجوی کارشناسی ارشد جنگل داری، دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه شهرکرد علی سلطانی استادیار گروه علوم جنگل، دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه شهرکرد علی لطفی هیات علمی دانشگاه صنعتی اصفهان

introduction forest ecosystems have continuously downgraded due to every environmental pressure including climate change, aerosols deposits, industrial pollutions and other degradation factors. the output soon or late would be a different forest. forest monitoring is a well-regulated and usually long running procedure, which has the ability to detect these phenomena and reactions based on aims ...

2012
E. Renaudin

A major goal of current research is to address temporal climatic variations that are related to CO2 emissions. A significant portion of these emissions are due to forest destruction and the resulting conversion of biomass to CO2. As 30% of the earth’s landmass is forest-covered, it is important to understand the biomass content with better estimates than are currently available. This research h...

2018
Ngawang Jamba B. Mohan Kumar

Citation: Jamba N and Kumar BM (2018) Medicinal Plants in the Broad-Leaf Mixed Coniferous Forest of Tshothang Chiwog, Bhutan: Floristic Attributes, Vegetation Structure, Ethnobotany, and Socioeconomic Aspects. Front. Environ. Sci. 5:96. doi: 10.3389/fenvs.2017.00096 Medicinal Plants in the Broad-Leaf Mixed Coniferous Forest of Tshothang Chiwog, Bhutan: Floristic Attributes, Vegetation Structure...

Journal: :Boundary-Layer Meteorology 1988

Journal: :Journal of Biogeography 2021

Aims (a) To determine the contribution of current macro-environmental factors in explaining phylogenetic structure European forest vegetation, (b) to map and describe spatial patterns their (c) examine which lineages are most important contributors clustering whether varies across types regions. Location Europe. Taxon Angiosperms. Methods We analysed 61,816 georeferenced vegetation plots Europe...

Journal: :JOJ Horticulture & Arboriculture 2018

Journal: :IOP conference series 2022

Abstract The hydrological system of tropical peatland has been changed due to drainage. condition caused prone burning. Forest fire affected the vegetation composition in peatland. Repeated causes more severe impact on and change characteristics. aim study is obtain species after Central Kalimantan. research was conducted several plots observation that burned 2015 (three years forth frequency)....

2007
Jose A. Carrera Estanislao de Simon Manuel Fisac

Dr. Engineers, ICONA (Instituto National para la Conservacion de la Naturaleza), Madrid, Spain. Abstract: Management of the fragile and greatly modified ecosystems in the Spanish Mediterranean climate is complex. Rainfall occurs in a few intensive storms on rough topography. Climax vegetation is sparse forest dominated by evergreen xerophilic species. The emphases of the National Institute for ...

2009
Bethany K. Schulz William A. Bechtold Stanley J. Zarnoch

Schulz, Bethany K.; Bechtold, William A.; Zarnoch, Stanley J. 2009. Sampling and estimation procedures for the vegetation diversity and structure indicator. Gen. Tech. Rep. PNW-GTR-781. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 53 p. The Vegetation Diversity and Structure Indicator (VEG) is an extensive inventory of vascular plants in the ...

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