نتایج جستجو برای: darabkola forest

تعداد نتایج: 106138  

More recently, the concept of integrated forest biorefinery (IFBR) has received much attention as a promising solution for the struggling forest industry in North America and Europe to overcome its difficult financial period and competes globally. This new business paradigm offers a broad range of potentially attractive products, from bioenergy to value-added green organic chemicals in addition...

Participatory forest management, as a model for sustainable forest development, prepares local people to play an effective role in their fate and they enable to participate in the process of sustainable forest development. Present research looks to the gap of between the current status and the ideal status of the forest Bankoul area as a fundamental concern. So, this research has done with the ...

Journal: :Remote Sensing 2016
Grant Connette Patrick Oswald Melissa Songer Peter Leimgruber

We investigated the use of multi-spectral Landsat OLI imagery for delineating mangrove, lowland evergreen, upland evergreen and mixed deciduous forest types in Myanmar’s Tanintharyi Region and estimated the extent of degraded forest for each unique forest type. We mapped a total of 16 natural and human land use classes using both a Random Forest algorithm and a multivariate Gaussian model while...

اقدسی, مهناز , مفید بجنوردی, مرتضی, میان آبادی, منیژه, نداف, محبت,

Ephedra is a dioecious shrub belongs to the Ephedraceae family. Almost all commercial applications of Ephedra extracts is derived from the ephedrine alkaloids found in the evergreen stems. The purpose of this study was to investigate seed germination in green house condition and total alkaloid and ephedrine amounts measurement. The Ephedra seeds were collected from Bojnoord region and germinate...

ترکش اصفهانی, مصطفی, جعفری, رضا, ساکی, مرجان, سلطانی کوپایی, سعید,

The aim of the present study was to evaluate the spatial and temporal changes of NPP in different biomes of Isfahan province from 2000 to 2014 and their response to climatic factors. For this purpose, the NPP data of the MODIS satellite were collected and the map of climatic variables was produced using various interpolation methods. The investigation of the spatial and temporal variations of N...

1998
J. C. Burgess

This paper looks at the economics of conversion and fragmentation of forest land. The forestry economics literature has generally focussed on the management of a single stand for timber and non-timber forest benefits with little attention being paid to forest level land use decisions, and in particular forest stand interactions. As noted by Bowes and Krutilla (1989), the focus on a single stand...

Journal: :caspian journal of environmental sciences 2009
s. mohammadi limaei r. naghdi

information on the productivity, costs and applications of the logging system is a key component in the evaluation of management plans for the rehabilitation and utilization of caspian forests. skidding and road construction costs are expensive forest operations. determining the optimum forest road network density is one of the most important factors in sustainable forest management. logging me...

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
Akiko Satake Thomas K Rudel

An historical generalization about forest cover change in which rapid deforestation gives way over time to forest restoration is called "the forest transition." Prior research on the forest transition leaves three important questions unanswered: (1) How does forest loss influence an individual landowner's incentives to reforest? (2) How does the forest recovery rate affect the likelihood of for...

Journal: :Environmental pollution 2002
R A Mickler T S Earnhardt J A Moore

The 90,674 wildland fires that burned 2.9 million ha at an estimated suppression cost of $1.6 billion in the United States during the 2000 fire season demonstrated that forest fuel loading has become a hazard to life, property, and ecosystem health as a result of past fire exclusion policies and practices. The fire regime at any given location in these regions is a result of complex interaction...

2017
Juan J. Cerrolaza Ozan Oktay Alberto Gómez Jacqueline Matthew Caroline L. Knight Bernhard Kainz Daniel Rueckert

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