نتایج جستجو برای: perception of soil erosion

تعداد نتایج: 21198928  

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
داود مومنی چلکی دانش آموخته کارشناسی ارشد مدیریت کشاورزی، دانشکده کشاورزی دانشگاه تبریز باب اله حیاتی دانشیار گروه اقتصاد کشاورزی دانشکده کشاورزی دانشگاه تبریز قادر دشتی دانشیار گروه اقتصاد کشاورزی دانشکده کشاورزی دانشگاه تبریز ایوب رضایی مربی گروه اقتصاد کشاورزی دانشکده کشاورزی دانشگاه تبریز

land degradation due to soil erosion has been well pointed out as one of the most serious ecological and economic problems that some such south asian countries including iran are faced with. although high investment has been made, particularly in introduction of soil conservational mechanical practices, the level of acceptance of these practices has been low and while a high rate of erosion con...

Farida Abubakari Fariya Abubakari Victor Owusu

Soil erosion is one of the most important forms of land degradation that threatens continued and sustained agricultural production in Ghana. The most severely affected areas are the three northern regions especially Upper East Region, where large tracts of land have been destroyed by water erosion leading to soil depth reduction and decline in soil fertility. This study was carried out in Talen...

1- INTRODUCTION Soil as one of the most important inputs in agricultural production process plays an important role in the quality of production operation, food security and sustainable development. On the other hand, soil erosion as one of the environmental agriculture issues has been intensified with increasing population and transforming to intensive forms of agriculture in recent years. Mi...

Journal: :journal of agricultural science and technology 2014
m. haghjou b. hayati d. momeni choleki

in recent decades, large investments have been made to introduce soil conservation methods, but most of these efforts have had limited success in achieving the goals. as a result, attempt to identify the factors deterring or promoting adoption of soil conservation practices is important. therefore, this study aimed to investigate factors affecting adoption of soil conservation practices by rain...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2014
fariya abubakari farida abubakari victor owusu

soil erosion is one of the most important forms of land degradation that threatens continued and sustained agricultural production in ghana. the most severely affected areas are the three northern regions especially upper east region, where large tracts of land have been destroyed by water erosion leading to soil depth reduction and decline in soil fertility. this study was carried out in talen...

2006
Berhanu Gebremedhin Scott Swinton

Farmers must perceive soil erosion as a problem before they will invest in preventing it. However, perceptions are often overlooked in the conservation literature. This study analyzes the levels and determinants of farmer perceptions of soil erosion in northern Ethiopia. Results are based on a survey of 250 farmers managing 900 fields during the 1995-96 cropping season. Farmer perceptions of th...

Journal: :Land Degradation & Development 2016

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Journal: :مرتع و آبخیزداری 0
جلال زندی دانشجوی دکتری آبخیزداری دانشگاه علوم کشاورزی و منابع طبیعی ساری محمود حبیب نژاد روشن استاد گروه آبخیزداری دانشگاه علوم کشاورزی و منابع طبیعی ساری کریم سلیمانی استاد مرکز rs و gis دانشکدة منابع طبیعی ساری

soil erosion is a serious environmental problem in vazroud watershed, which is located in the centre of the mazandaran province, iran. unfortunately, vazroud watershed like most iran watersheds don’t have recorded data and erosion and sedimentation gages to research, monitor and model soil erosion at large watershed. in order to assess the soil erosion risk, soil erosion modeling at the watersh...

Journal: :مدیریت خاک و تولید پایدار 0
حیدر غفاری دانشگاه تهران منوچهر گرجی دانشگاه تهران

maintaining soil productivity is one of the key factors in sustainable agriculture. soil erosion reduces soil productivity over a long-term period of time. therefore, determining soil erosion tolerance is necessary for sustainable agriculture production. in this study, the long-term effects of erosion on soil productivity in the typical kohin watershed were evaluated. the soil productivity inde...

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