نتایج جستجو برای: natural forest

تعداد نتایج: 576922  

Journal: :Journal of environmental biology 2010
Hasan Alkan Mehmet Korkmaz David W McGill Mehmet Eker

Participatory approaches to natural resource management and development are widely accepted as effective instruments for achieving sustainable forest management (SFM) particularly in the developing countries. However, local people live within and adjacent to the forest resources and are dependent on the forest in terms of their livelihoods may prevent turning some decisions, intended as a compo...

Journal: :Ecological Informatics 2007
Deana D. Pennington

Article history: Received 1 November 2006 Received in revised form 29 March 2007 Accepted 17 April 2007 Exploratorymodeling is an approach used when process and/or parameter uncertainties are such that modeling attempts at realistic prediction are not appropriate. Exploratory modeling makes use of computational experimentation to test how varying model scenarios drive model outcome. The goal of...

Journal: :Environmental science and pollution research international 2005
Frank Laturnus Isabelle Fahimi Milan Gryndler Anton Hartmann Mathew R Heal Miroslav Matucha Heinz Friedrich Schöler Reiner Schroll Teresia Svensson

GOAL, SCOPE AND BACKGROUND The anthropogenic environmental emissions of chloroacetic acids and volatile organochlorines have been under scrutiny in recent years because the two compound groups are suspected to contribute to forest dieback and stratospheric ozone destruction, respectively. The two organochlorine groups are linked because the atmospheric photochemical oxidation of some volatile o...

2016
Hua Zhou Shengwang Meng Juan Carlos Linares

Sustained forest management of Cunninghamia lanceolata (Chinese fir) plantations in subtropical China is restricted by the limited availability of quantitative data. This study combines inventory data and tree-ring analysis of Chinese fir from natural and plantation forests that were subjected to controlled burning or brush clearing site preparations. Inter-annual variation of Chinese fir tree-...

Journal: :Proceedings of the Saint Petersburg Forestry Research Institute 2020

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...

2009
Xiaohua Wang Shudong Wang Zhenyu Cai Jianli Ding

Excessive water is used by farm field in Tarim river basin, it is very important to deep study on the relation between area of farm field and natural vegetation in recent 50 years. Collecting and processing various decades of remote sensing data, and got area of farm field, grass, forest, town and non-serviceable field. These results indict that: Because of the high flow period between 1950 and...

Investigation on structure and dynamics of natural forest ecosystems is an important issue for silvicultural decisions. The aim of this study is to analysis dynamics and structure of a beech stand during 5-year period in the Shast Kalateh forest in the Caspian region, North of Iran. Data were collected from a 16.9ha permanent research plot established in a natural unlogged stand in 2006. All li...

Journal: :Environmental management 2008
Theodore C Weber Peter J Blank Anne Sloan

Maryland's Green Infrastructure (GI) is a network of large, intact natural areas (hubs), interconnected by linear swaths of riparian or upland vegetation (corridors). The GI serves significant ecological functions and provides the bulk of the state's natural support system. This study examined whether the GI as mapped does, in fact, identify Maryland's most ecologically valuable forested lands,...

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