نتایج جستجو برای: use value in total wetland preservation value

تعداد نتایج: 17273185  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم 1357

in his last years of life americans had almost forgotton steinbeck, and those who had not, occasionally criticized him for supporting and praising the u. s. military intervention in the vietnam war. althought ateinbeck incorporates different themes into his works, each one bears many signs of his concern and sympathy for america and the american common people in particular. steinbecks to a god ...

Journal: :Library Trends 2007
Abby Smith

Preservation has value to society over and above the value of the content that is preserved. It is important to articulate this value in order to argue compellingly for the creation of public policies and economic models that adequately support preservation of culturally significant content. This article explores the societal value of preservation, discussing why questions about societal value ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان مرکزی - دانشکده پزشکی اراک 1392

مقدمه : هدف از این مطالعه مقایسه ی عملکرد والدین و مشکلات رفتاری در کودکان مبتلا و غیر مبتلا به بیماری بازگشت ادرار از مثانه به حالب مراجعه کننده به درمانگاه کودکان بیمارستان امیرکبیر اراک روش کار : این مطالعه یک مطالعه مورد – شاهدی است که روی 61 کودک مبتلا به اختلال شب ادراری اولیه و 61 کودک غیر مبتلا در محدوده سنی 14-4 سال انجام شد. پرسشنامه های ارزیابی سیاهه رفتاری کودک (cbcl) برای بررسی م...

ژورنال: سلامت و محیط زیست 2019

Background and Objective: Research has shown that assessing the toxicity and ecological risk of various types of pollutants, including heavy metals, using specific indicators, is indispensable in the ecological risk assessment of the ecosystem. Accordingly, the aim of this study was the assessment of the ecological effect of heavy metals presence (Pb, Zn, Cu, Cd and, As) in Anzali wetland using...

Journal: :iranian journal of ichthyology 0
seyed ahmadreza hashemi department of fishery, faculty of fisheries and environment, gorgan university of agricultural sciences and natural resources, gorgan, iran. rasoul ghorbani department of fishery, faculty of fisheries and environment, gorgan university of agricultural sciences and natural resources, gorgan, iran. farhad kymaram fisheries research organization, tehran, iran. seyed abass hossini department of fishery, faculty of fisheries and environment, gorgan university of agricultural sciences and natural resources, gorgan, iran. gholamreza eskandari southern iran aquaculture research center, ahvaz, iran. aliakbar hedayati department of fishery, faculty of fisheries and environment, gorgan university of agricultural sciences and natural resources, gorgan, iran.

to estimate the fish composition and catchability coefficient of gillnet, a survey was carried out during april 2011 to march 2012 in the shadegan wetland, khuzestan province, iran. samples were collected from five stations viz., mahshar, rogbe, khorosy, ‍salmane and atish. approximately 4300 fish specimens were measured and depletion method was used for the estimation of catchability coefficie...

Journal: :Journal of Soil and Groundwater Environment 2016

2015
Olalekan Adekola Gordon Mitchell Alan Grainger

The Niger Delta wetlands are of international importance for their biodiversity, and support a large human population. The value and distribution of wetland ecosystem service benefits and costs across the three main stakeholder sectors (local community, government and corporate) were investigated. Results show that the net monetary value of the wetlands is $11,000 per delta household of which $...

2016
Caiyao Xu Lijie Pu Ming Zhu Jianguo Li Xinjian Chen Xiaohan Wang Xuefeng Xie

Urbanization, and the resulting land use/cover change, is a primary cause of the degradation of coastal wetland ecosystems. Reclamation projects are seen as a way to strike a balance between socioeconomic development and maintenance of coastal ecosystems. Our aim was to understand the ecological changes to Jiangsu’s coastal wetland resulting from land use change since 1977 by using remote sensi...

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