نتایج جستجو برای: soluble and erosion soil remoteness from residential areas

تعداد نتایج: 17651055  

2016
Fidele Karamage Chi Zhang Alphonse Kayiranga Hua Shao Xia Fang Felix Ndayisaba Lamek Nahayo Christophe Mupenzi Guangjin Tian

Soil erosion has become a serious problem in recent decades due to unhalted trends of unsustainable land use practices. Assessment of soil erosion is a prominent tool in planning and conservation of soil and water resource ecosystems. The Universal Soil Loss Equation (USLE) was applied to Nyabarongo River Catchment that drains about 8413.75 km² (33%) of the total Rwanda coverage and a small par...

2007
Jerry C. Ritchie Gregory W. McCarty Erik R. Venteris T. C. Kaspar

Patterns of soil organic carbon (SOC) vary widely across the landscape leading to large uncertainties in the SOC budget especially for agricultural landscapes where water, tillage and wind erosion redistributes soil and SOC across the landscape. It is often assumed that soil erosion results in a loss of SOC from the agricultural ecosystem but recent studies indicate that soil erosion and its su...

2018
Ping Pan Fang Zhao Jinkui Ning Ling Zhang Xunzhi Ouyang Hao Zang

Understory vegetation plays a vital role in regulating soil carbon (C) and nitrogen (N) characteristics due to differences in plant functional traits. Different understory vegetation types have been reported following aerial seeding. While aerial seeding is common in areas with serious soil erosion, few studies have been conducted to investigate changes in soil C and N cycling as affected by un...

Introduction: Wind erosion and the influx of sandy soils to economic facilities and biological resources are one of the main problems in the country. 14 provinces, located in arid and semi-arid regions, face wind erosion. Wind erosion and the influx of sandy soils are two important indicators in the occurrence of desertification and a serious threat to arid areas. The best and lasting way to pr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده جنگلداری و مهندسی چوب و کاغذ 1391

درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...

2011
X. Yang J. Leys S. Heidenreich

This study explores approaches for wind erosion risk assessment utilising available time-series Moderate Resolution Imaging Spectroradiometer (MODIS) and climate products. We present a simple index and a ruleset based approach to identify wind erosion risk areas across Australian using time-series of ground cover, soil moisture and wind speed. These approaches and data sets were implemented in ...

Journal: :مدیریت خاک و تولید پایدار 0
مارال خدادادی دانشجوی دکتری/دانشگاه تهران منوچهر گرجی دانشیار/ دانشگاه تهران محمد قنادی مراغه پژوهشگاه علوم و فنون هسته ای، سازمان انرژی اتمی ایران علی سامانی بهرامی پژوهشگاه علوم و فنون هسته ای، سازمان انرژی اتمی ایران میر حسین میر سید حسینی دانشیار/ گروه مهندسی و علوم خاک، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران قوام الدین زاهدی امیری دانشیار/ دانشکده جنگلداری و اقتصاد جنگل، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران معین مفتاحی

over the past decades, the fallout radionuclides 137cs, 210pbex and 7be are increasingly being used to quantify soil erosion and sedimentation rates. although studies using 137cs and to some extent 210pbex are now well-documented, there is a need for further work aimed at exploring the use of 7be, particularly in arid and semi-arid areas. investigating soil erosion processes occurring over shor...

اسمعلی‌عوری, اباذر, حاجی, خدیجه, مصطفی‌زاده, رئوف, نظرنژاد, حبیب,

Prioritization of critical sub-watershed is an important procedure to control runoff and erosion phenomenon and considered as effective way in management of watersheds and achieving sustainable development. The main aim of this study is assessing the soil erosion-prone areas and prioritization of 30 hydrologic response unit of Rozehchai Watershed that located in West Azerbaijan province (186.41...

2002
A. Zartl A. Klik E. Schiebel

Soil erosion research is a popular topic in soil science that appears in conjunction with several other topics like soil and/or water conservation, soil physics, chemistry and – biology and others. A request for the term “soil erosion” on CAB abstract CD, dated from January 1992 to January 2001, resulted in 15.531 articles. According to the publication year on average 1.639 articles are publish...

2015
Rochelle M Eime Melanie J Charity Jack T Harvey Warren R Payne

BACKGROUND Many factors influence participation in sport and Physical Activity (PA). It is well established that socio-economic status (SES) is a critical factor. There is also growing evidence that there are differences in participation patterns according to residential location. However, little is known more specifically about the relationship of PA participation and frequency of participatio...

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