نتایج جستجو برای: enough and toxicity areas 196 surface soil samples 0

تعداد نتایج: 17181492  

Journal: :International journal of systematic and evolutionary microbiology 2007
Fred A Rainey Margarida Ferreira M Fernanda Nobre Keren Ray Danielle Bagaley Ashlee M Earl John R Battista Benito Gómez-Silva Christopher P McKay Milton S da Costa

Three ionizing-radiation-resistant bacterial strains (designated KR-196, KR-198 and KR-200(T)) were isolated from a sample of arid soil collected from a coastal desert in Chile. The soil sample was irradiated before serial dilution plating was performed using one-tenth-strength plate count agar. Phylogenetic analysis of the 16S rRNA gene sequences showed these organisms to represent a novel spe...

2006
Gregory W. McCarty James B. Reeves

Data-intensive technologies such as precision agriculture require new approaches for acquisition of soil data on landscapes. We compared the ability of near infrared (NIR; 400–2500 nm) and mid infrared (MIR; 2,500– 25,000 nm) spectroscopy for field-scale acquisition of soil fertility parameters. Samples were obtained in a grid pattern (25 m spacing) from the surface (0–10 cm) and sub-surface (1...

Ghasem Ali Abarsaji Mohammad Hassan Jouri, Mohammad Mahdavi,

Soil salinity is one of the important factors which can influence the growth anddistribution of plant species. Saline and alkaline rangelands of Golestan Province, Iran withlow-deep underground water level are considered as a halophyte plant species growing area.Attempts have been made to determine soil salinity and its relationship with Frankenia hirsutaL. In order to determine the Electrical ...

Abolghasem Mirhosseini Dehabadi , Elham Ehsani , Mohammad Hassan Ehrampoush ,

Introduction: Soil has an important role in nutrient cycle and an important function in storage, refinement, and movement of nutrients for the living and non-living parts. Soil pollution of heavy metals and elements is one of the common pollution impacts of human activities, especially industry. Realization of distribution pattern of these elements and their anthropogenic sources is a major par...

Soil erosion and sand movement is one of environmental threats of the desert areas and vegetation partially prevents the creation of this phenomenon. One of the most important species growing in Sabzevar desert plains and sandy dunes, regarding too dense canopy and their root density, which have a considerable impact on soil protection and prevent movement of sands, is Stipagrostis pennata. ...

2017
Marjan PADIDAR Ahmad JALALIAN Kamran ASGARI Majid ABDOUSS Payam NAJAFI Naser HONARJOO Jaber FALLAHZADE

Wind erosion and dust storms are main issues in arid and semi-arid regions. Application of soil stabilizer on unstable land might be an eff ective and sustainable strategy in arid and semi-arid countries to minimized harmful eff ects on environment and human health. Th e aim of this study was to assess the eff ect of using nanoclay for increasing soil stability, as a result of increasing in siz...

Journal: :محیط زیست طبیعی 0
علی اکبرزاده دانش آموخته کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، ایران منوچهر گرجی استادیار پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، ایران حسینقلی رفاهی استاد پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، ایران حسن روحی پور دانشیار پژوهشی بخش بیابان موسسه تحقیقات جنگلها و مراتع کشور، ایران

today's, adverse effects of off-site erosion, namely damages received from sediment, is a serious bioenvironmental problem. one of the methods for temporary soil stabilization before permanent rehabilitation of vegetation cover, especially on slopes, for mitigating of bioenvironmental contaminants, is using materials having property to cementate the dispersed particles on the soil surface....

ژورنال: علوم آب و خاک 2013
اعظم حسین شاهی, , علیرضا واعظی, , پرویز عبدی نژاد, ,

Flood spreading is one of the suitable methods to control the floods and conservation of soil and water in arid and semi-arid regions. Since soil properties may be influenced by the flood spreading, this study was carried out to investigate the effect of the flood spreading on physicochemical soil properties in Garacharyan plain located in North West of Zanjan in 2009. Three flooded areas and o...

Abstract Objective(s): Copper nano particles are added to ordinary engine oil as an additive to reduce friction and repair damaged surface under friction conditions. However, it is still unclear what environmental effects such a compound might have on conventional engine oils and its toxicity in different animal species has not been determined. The aim of this study is to investigate the ...

Extended abstract 1- INTRODUCTION In the arid and semi-arid areas of Asia, dust storms occur frequently. Much progress has been made in the monitoring modeling and prediction of Asian dust storms. Dust emission is caused by wind erosion in the sensitive areas. Wind erosion is described as the transportation of soil particles by means of the wind. Soil Surface moisture is one of the most i...

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