نتایج جستجو برای: use value in total wetland preservation value

تعداد نتایج: 17273185  

Journal: :محیط شناسی 0
صادق خلیلیان دانشگاه تربیت مدرس ، دانشیار اقتصاد کشاورزی، دانشکدة کشاورزی محمد خداوردیزاده دانشگاه تربیت مدرس، دانشجوی دکترای اقتصاد کشاورزی دانشکدة کشاورزی محمد کاوسی کلاشمی دانشگاه تهران ، دانشجوی دکترای اقتصاد کشاورزی، دانشکدة اقتصاد و توسعة کشاورزی

although individuals knowledge and awareness toward natural resources, especially wetlands had been increased but still social consideration level toward wetland importance, functions and sensitivity are low. considerable amount of wetlands destruction caused by miscalculation of wetlands functions’ values in a market condition. estimating the value of wetland’s function is a way in order to un...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1372

in this study reference as one of the five cohesive devices in the achievement of textuality in english and persian narrative/descripitive written texts is focused on and analysed . to do so , the theoretical framework elaborated by halliday and hasan (1976) and its version adapted by the writer to match the sub-types of reference in farsi are applied to the analysis of reference in english and...

ژورنال: اقتصاد مقداری 2015

The Shadegan Wetland is located in the southwest of Iran. It is one of the wetlands internationally registered in the Ramsar Convention. Thanks to its variety of functionalities this wetlands has provided the local people with lots of job opportunities. Nowadays, as a result of located in the oil fields, this wetland is threatened by many of the projects run in its vicinity, like oil exploratio...

Journal: :محیط شناسی 0
حمید امیرنژاد - استادیار اقتصاد منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری حامد رفیعی دانشجوی دکتری اقتصاد کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران میلاد اتقایی دانشجوی کارشناسی ارشد اقتصاد کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

according to importance of environmental resource in natural ecosystem preservation and human life, restriction of destruction is necessary. miankaleh wetland in mazandaran province is settlement of animal and herbaceous rare species and due to migration of birds therefore, this research will discuss determination of preservation value in miankaleh international wetland and measure of individua...

پایان نامه :0 1375

the following null hypothesis was proposed: there is no significant difference between the efl students listening comprehension development receiving pictorial cues and those receiving no cuse. to test the null hypothesis, 52 male and femal freshmen students of medicine studing at iran university of medical scinces were randomly selected from a total population of 72 students. to ensure that th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...

Journal: :محیط زیست طبیعی 0
حبیب الله سلامی استاد گروه اقتصاد کشاورزی، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران حامد رفیعی دانشجوی دکتری گروه اقتصاد کشاورزی، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران

because of national and international importance of the anzali international wetland, this study attempts to determine the preservation value and estimate willingness to pay (wtp) by iranian households for preserving this wetland, using contingent valuation method. a logit model was employed with maximum likelihood estimation procedure. results showed, education level of householder, informativ...

2016
Sony Baral Bijendra Basnyat Rajendra Khanal Kalyan Gauli

Wetlands are the most productive ecosystem and provide wide arrays of wetland ecosystems (goods and services) to the local communities in particular and global communities in general. However, management of the wetland often does not remain priority and recognized as the unproductive waste land mainly due to poor realization of the economic value of the wetlands. Taking this into account, the s...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده مدیریت 1391

one of the most important factors in study of project’s , is the study of environmental opportunities factors the permanent study of environmental opportunity factors . the study of permanent environmental changing and knowing golden threats’ cooperate with possible threats and at the result in structure forming and future skeleton of organization has a vital effects . the petrochemical industr...

پایان نامه :0 1374

having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...

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