نتایج جستجو برای: terrestrial eutrophication

تعداد نتایج: 39264  

The aim of this research was to investigate the environmental impacts of olive fruit production under different orchard size and upon organic and common agro-systems through Life Cycle Assessment (LCA) methodology in Rudbar region, Guilan province, northern Iran. The data were collected using a self-structured questionnaire and face-to-face interview with 305 olive growers in the study region. ...

Journal: :مهندسی بیوسیستم ایران 0
اله یار محمدی برسری کارشناس ارشد مدیریت، دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد رشت، رشت، ایران سعید فیروزی دانشگاه آزاد اسلامی واحد رشت هاشم امین پناه گروه زراعت، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران

iran is among the biggest emitters of greenhouse gasses in the world. agricultural sector has a remarkable role in non-renewable energy consumption and then, the environmental impacts in this country. in this regard, the environmental impacts of watermelon production as the most important melons produced in guilan province of iran were investigated through the life cycle assessment (lca) approa...

Journal: :محیط زیست طبیعی 0
حمزه میرحاجی کارشناس ارشد مکانیزاسیون دانشگاه فردوسی مشهد مهدی خجسته پور دانشیار گروه ماشین های کشاورزی، دانشگاه فردوسی مشهد محمدحسین عباسپورفرد دانشیار گروه ماشین های کشاورزی، دانشگاه فردوسی مشهد

life cycle study of a product is an accepted method for determining the side effects of its production process on environment during its complete life cycle. in this research, the impacts of global warming, acidification, terrestrial eutrophication and fossil resources depletion per unit yield of wheat (ton) on environment were investigated using life cycle assessment method in marvdasht region...

Journal: :Waste management 2015
Yan Zhao Wenjing Lu Anders Damgaard Yu Zhang Hongtao Wang

To reveal potential impacts to environment and human health quantitatively, co-composting and utilization of sludge and woodchips were investigated using a life-cycle-based model, EASETECH. Three scenarios were assessed through experiments using different material ratios. Emission amounts during co-composting were determined by monitoring data and mass balance. With 100t sludge treatment, co-co...

Journal: :Environmental pollution 1999
V H Smith G D Tilman J C Nekola

In the mid-1800s, the agricultural chemist Justus von Liebig demonstrated strong positive relationships between soil nutrient supplies and the growth yields of terrestrial plants, and it has since been found that freshwater and marine plants are equally responsive to nutrient inputs. Anthropogenic inputs of nutrients to the Earth's surface and atmosphere have increased greatly during the past t...

Journal: :تولید گیاهان زراعی 0
بهروز اسماعیل پور دانشگاه محقق اردبیلی سرور خرم دل دانشگاه فردوسی مشهد- دانشکده کشاورزی افسانه امین غفوری دانشگاه پیام نور قوچان

life cycle assessment (lca) had proven to be an appropriate assessment tool for analysis of agri-food products by identifying, quantifying and evaluating the resources consumed and emissions released into the environment. this study was performed for evaluation the environmental impacts of potato agroecosystems based on nitrogen levels by using lca methodology. tuber yield mean during 1999-2013...

Journal: :مهندسی بیوسیستم ایران 0
مهدی خجسته پور دانشیار گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد علیرضا طاهری راد دانشجوی کارشناسی ارشد مکانیزاسیون، گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد امین نیکخواه دانشجوی کارشناسی ارشد مکانیزاسیون، گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد

the main objective of this study was to investigate the environmental impacts of cotton production in golestan province of iran using life cycle assessment methodology. the data used in the study were obtained from cotton farmers with face-to-face questionnaire method during 2011-2012. the questionnaires included total inputs of cotton production in the region and yield weight. environmental im...

2004

7. Project Summary: Eutrophication, a persistent environmental problem characterized by turbid water, toxic algae, fish kills, waterborne disease, and loss of aquatic ecosystem services, may be related to important thresholds in the phosphorus (P) cycle. We will address two main questions: (1) What thresholds in the transport and recycling of P in linked terrestrial-aquatic ecosystems cause lak...

2004
Monica G Turner

7. Project Summary: Eutrophication, a persistent environmental problem characterized by turbid water, toxic algae, fish kills, waterborne disease, and loss of aquatic ecosystem services, may be related to important thresholds in the phosphorus (P) cycle. We will address two main questions: (1) What thresholds in the transport and recycling of P in linked terrestrial-aquatic ecosystems cause lak...

Journal: :محیط زیست طبیعی 0
باقر عمادی دانشگاه فردوسی مشهد امین نیکخواه دانشگاه فردوسی مشهد حمزه سلطانعلی دانشگاه فردوسی مشهد

this study aimed to evaluate the environmental consequences of kiwifruit production in guilan province of iran by the life cycle assessment (lca) methodology during growing season of 2011-2012. data were obtained from 84 kiwifruit producers using a face to face questionnaire method. for this purpose, a functional unit equal to one ton kiwifruit was assumed based on iso 14040 method. impacts of ...

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