نتایج جستجو برای: agriculture and natural resources

تعداد نتایج: 16909371  

Drought is one of the most important natural hazards that should affect Agriculture and water resources. The frequency of its occurrence, especially in arid and semi-arid areas of Iran is very high. Therefore simulation and drought forecasting is necessary more than ever. This factor is importance in the planning and management of natural resources and water resources. In this study seasonal dr...

Journal: :Environmental Modelling and Software 2014
Takuya Iwamura Eric F. Lambin Kirsten M. Silvius Jeffrey B. Luzar José M. V. Fragoso

Indigenous people of the Rupununi region of Amazonian Guyana interact with their natural environment through hunting and subsistence agriculture. To date the sustainability of indigenous livelihoods has been analyzed by modeling either hunting or forest clearing. Here we develop a holistic model framework with agent-based modeling to examine interactions between demographic growth, hunting, sub...

2012
JASON R. BOULANGER PAUL D. CURTIS EVAN G. COOCH ANTHONY J. DENICOLA

JASON R. BOULANGER, Cornell University, College of Agriculture and Life Sciences, Department of Natural Resources, B20 Bruckner Hall, Ithaca, NY 14853, USA [email protected] PAUL D. CURTIS, Cornell University, College of Agriculture and Life Sciences, Department of Natural Resources, B13 Bruckner Hall, Ithaca, NY 14853, USA EVAN G. COOCH, Cornell University, College of Agriculture and Life Scie...

A. Asadi N. Shiri S.M.K. hashemi Z. Motamedinia

The accurate planning and management for sustainable agriculture results in appropriate behaviors ofindividuals towards sustainability through changes happened in individuals’ knowledge and attitudesof sustainability. A survey of natural resources and agricultural researchers (N = 85) was conducted inIranian Province of ILAM to explore their attitudes of sustainable agriculture and to identify ...

Journal: :محیط زیست طبیعی 0
مهدی شیخ گودرزی دانشجوی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران افشین علیزاده شعبانی استادیار محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران عبدالرسول سلمان ماهینی دانشیار محیط زیست، دانشکده شیلات و محیط زیست، دانشگاه گرگان، ایران جهانگیر فقهی دانشیار جنگلداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران

human activities induced changes in land cover/use have extensive impacts on the landscape. in recent years, these changes had an increasingly growth due to irrational use of the natural resources in iran. hence, considering the negative effects of the inappropriate use of land and land-use change, understanding of the landscape changes over time is necessary to planning and implementation of s...

Journal: :ecopersia 2015
masoud masoudi parviz jokar

land-use planning is a science that determines the type optimum of land-use through studying the ecological characteristics of the land as well as its socio-economic structure. the primary objective of this study is to evaluate the land-use and natural resources for future sustainable land planning using gis. in this study, the makhdoom’s systematic method was used to analyze the ecological and...

2009
Martin Bwalya

The rising world population is increasing the pressure on agriculture to produce more food (Fig. 1 and 2). This is more so for the African continent, where it is not just about food supply, but also a critical factor in economic development, poverty alleviation and improving living standards especially in rural areas. On the other side agricultural production is one of the factors contributing ...

پایان نامه :0 1391

employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull dis...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید