نتایج جستجو برای: Soil biology

تعداد نتایج: 342102  

Journal: :journal of rangeland science 0
jalil ahmadi ferdowsi university of iran mohammad farzam ferdowsi university of mashhad amir lagzian ferdowsi university of mashhad

fire is one of the incorporate vegetation management practices for grasslands and semi-arid rangelands. it may affect symbiotic relationship between range plants and mycorrhiza. accordingly, this research was aimed to investigate the effects of a spring prescribed fire on the symbiotic relationships between mycorrhiza and 6 plant species. the study was conducted in a semi-arid steppe rangeland ...

Journal: :American Entomologist 1992

2009
Tony Pattison

Introduction Before we can understand the role of amendments and additives to the soil and their part in a healthy soil, we need to understand what is in the soil and role of some of the organisms in the soil. By knowing something about soil biology we can get a greater appreciation of the constraints and challenges presented by the use of amendments and additives to the soil. This article is n...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان 1386

چکیده ندارد.

2002
E A Fitzpatrick

Soil classification has proceeded along the classical path of biological classifications but has not produced an internationally accepted system even though the WRB is supported by the IUSS. More recently Mazaheri et al. (1995a, 1995b) have tried to introduce Fuzzy logic into soil classification. They achieved a small amount of success when their technique was applied to selected soils in Austr...

2012
Helen Downie Nicola Holden Wilfred Otten Andrew J. Spiers Tracy A. Valentine Lionel X. Dupuy

Understanding of soil processes is essential for addressing the global issues of food security, disease transmission and climate change. However, techniques for observing soil biology are lacking. We present a heterogeneous, porous, transparent substrate for in situ 3D imaging of living plants and root-associated microorganisms using particles of the transparent polymer, Nafion, and a solution ...

Journal: :FEMS microbiology reviews 2018
Stefan Geisen Edward A D Mitchell Sina Adl Michael Bonkowski Micah Dunthorn Flemming Ekelund Leonardo D Fernández Alexandre Jousset Valentyna Krashevska David Singer Frederick W Spiegel Julia Walochnik Enrique Lara

Protists include all eukaryotes except plants, fungi and animals. They are an essential, yet often forgotten, component of the soil microbiome. Method developments have now furthered our understanding of the real taxonomic and functional diversity of soil protists. They occupy key roles in microbial foodwebs as consumers of bacteria, fungi and other small eukaryotes. As parasites of plants, ani...

ژورنال: دانش آب و خاک 2012
احمد فاخری فرد اسماعیل اسدی, محمد علی قربانی

اگرچه مدل­های متعددی برای بارش-رواناب توسط هیدرولوژیست­ها توسعه داده شده­اند، با این وجود روش­های هیدروگراف واحد در بسیاری از حوضه­ها که در آنجا داده­های هیدرولوژیکی ثبت شده کافی جهت استفاده مدل­های توزیعی بارش-رواناب وجود ندارد هنوز یک ابزار مفید برای تخمین سیلاب می­باشد. هدف از مقاله حاضر استخراج توابع پاسخ پالس واحد رواناب سریع و آهسته جریان آبراهه­ای به روش تحلیلی با استفاده از یک مدل مفهوم...

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