نتایج جستجو برای: soil taxonomy

تعداد نتایج: 209753  

Journal: :Mycologia 2011
Andrea Porras-Alfaro Jose Herrera Donald O Natvig Kendra Lipinski Robert L Sinsabaugh

The fungal loop model of semiarid ecosystems integrates microtopographic structures and pulse dynamics with key microbial processes. However limited data exist about the composition and structure of fungal communities in these ecosystems. The goal of this study was to characterize diversity and structure of soil fungal communities in a semiarid grassland. The effect of long-term nitrogen fertil...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1370

حوضه آبخیز سدمخزنی شهید پارسا در جنوب شرقی شهرستان فردوس استان خراسان واق گردیده است . بااحداث این سد علاوه برآبیاری اراضی موجود، 700 هکتار از اراضی جدید پایین دست به زیر کشت می روند. عمده ترین معضل موجود در رابطه با حوضه آبخیز، وجود بار رسوب فراوان و تجمع آن در پشت مخزن سد می باشد. لذابه علت عدم وجود اطلاعات کافی از وضعیت فرسایش خاک در حوضه آبخیز، دراین رساله بررسی و مطالعه فرسایش پذیری خاک ان...

2017

Links: [1] https://www.buppractice.com/node/206 [2] http://psychiatryonline.org/guidelines [3] https://www.buppractice.com/taxonomy/term/91 [4] https://www.buppractice.com/taxonomy/term/27 [5] https://www.buppractice.com/taxonomy/term/28 [6] https://www.buppractice.com/taxonomy/term/33 [7] https://www.buppractice.com/taxonomy/term/120 [8] https://www.buppractice.com/taxonomy/term/117 [9] https:...

Journal: :journal of electrical and computer engineering innovations 0
hassan rashidi department of statistics, mathematics, and computer science, allameh tabataba’i university

analysis and design of object oriented is onemodern paradigms for developing a system. in this paradigm, there are several objects and each object plays some specific roles. identifying objects (and classes) is one of the most important steps in the object-oriented paradigm. this paper makes a literature review over techniques to identify objects and then presents six taxonomies for them. the f...

Analysis and design of object oriented is onemodern paradigms for developing a system. In this paradigm, there are several objects and each object plays some specific roles. Identifying objects (and classes) is one of the most important steps in the object-oriented paradigm. This paper makes a literature review over techniques to identify objects and then presents six taxonomies for them. The f...

2004
J. N. Shaw L. T. West D. D. Bosch C. C. Truman D. S. Leigh

Parent materials greatly influence soil development and the distribution of soils on the southeastern US Coastal Plain. We examined the physical, chemical, and mineralogical properties of 11 pedons in a 1-ha plot on the Upper Coastal Plain of Georgia, USA. Uniformity of parent materials was assessed by sand grain size characteristics. The soils have sandy epipedons of variable thickness and arg...

2017

Links: [1] https://www.buppractice.com/node/62 [2] http://www.buppractice.com/node/931 [3] https://www.buppractice.com/taxonomy/term/29 [4] https://www.buppractice.com/taxonomy/term/96 [5] https://www.buppractice.com/taxonomy/term/90 [6] https://www.buppractice.com/taxonomy/term/113 [7] https://www.buppractice.com/taxonomy/term/126 [8] https://www.buppractice.com/taxonomy/term/72 [9] https://ww...

2017

Links: [1] https://www.opioidrisk.com/node/511 [2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1950245/ [3] https://www.opioidrisk.com/taxonomy/term/609 [4] https://www.opioidrisk.com/taxonomy/term/529 [5] https://www.opioidrisk.com/taxonomy/term/613 [6] https://www.opioidrisk.com/taxonomy/term/574 [7] https://www.opioidrisk.com/taxonomy/term/617 [8] https://www.opioidrisk.com/taxonomy/term/62...

2002
Henrik Vejre Ingeborg Callesen Lars Vesterdal

the C/N ratio is used to characterize living and dead organic matter. The total C accumulated in biomass is Increasing atmospheric CO2 concentrations, and widespread deposition of N to terrestrial ecosystems has increased the focus on soil generally limited by the availability of N. Forest trees C and N pools. The aim of this study was to estimate the size and are often adapted to N limited con...

2017

Links: [1] https://www.buppractice.com/node/173 [2] http://www.drugpolicy.org/docUploads/buprenorphine_themedicalletter.pdf [3] https://www.buppractice.com/taxonomy/term/105 [4] https://www.buppractice.com/taxonomy/term/112 [5] https://www.buppractice.com/taxonomy/term/47 [6] https://www.buppractice.com/taxonomy/term/54 [7] https://www.buppractice.com/taxonomy/term/64 [8] https://www.buppractic...

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