نتایج جستجو برای: soil profiles

تعداد نتایج: 330878  

Journal: :آب و خاک 0
کمال نبی الهی احمد حیدری روح الله تقی زاده مهرجردی

soil texture is an important soil physical property that governs most physical, chemical, biological, and hydrological processes in soils. detailed information on soil texture variability is crucial for proper crop and land management and environmental studies. therefore, at present research, 103 soil profiles were dogged and then sampled in order to prepare digital map of soil texture in bijar...

Journal: :journal of rangeland science 2012
majid sadeghinia mohammad jafari ghavamodin zahedi amiri naser baghestani maybodi ali tavili

this research was conducted to investigate the relationships between soil(organic matter, potassium, phosphorous, sodium, fine gravel, soil texture, ec, lime,gypsum, nitrogen) and environmental (elevation, slope) factors with distribution ofvegetation types in rangelands of sabzdasht, located in bafgh, yazd province at 2012. forthis purpose, four vegetation types were selected as follows: artem...

Journal: :Environmental toxicology and chemistry 2014
Oliver A H Jones Stephanie Sdepanian Steven Lofts Claus Svendsen David J Spurgeon Mahon L Maguire Julian L Griffin

Metabolic profiling can be used to assess the changes in biochemical profiles of soil communities living in contaminated sites. The term "community metabolomics" is proposed for the application of metabolomics techniques to the study of the entire community of a soil sample. The authors anticipate the present study to be a starting point for the use of this technique to assess how communities r...

2014
Kwame Nkrumah L. K. Amekudzi

The applicability of magnetic susceptibility measurements was tested to detect soil contamination from a waste site deposit in the topsoil in the vicinity of the Independence Hall, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi. Magnetic susceptibility (volume specific) measurements of the near surface topsoil (~ 15 cm top layer) were taken along four radial profiles from th...

Journal: :The New phytologist 2007
Erik A Hobbie Thomas R Horton

With improvements in molecular techniques, identification of taxa in mycorrhizal ecology has expanded from fruitbodies to mycorrhizal roots to extraradical hyphae (Anderson & Cairney, 2004). These molecular techniques are, in general, equally applicable to saprotrophic fungi, although this important functional group has received relatively little focus in community studies (Allmer et al ., 2006...

Journal: :Remote Sensing 2016
Matias Ernesto Barber Francisco Matías Grings Jesús Alvarez-Mozos Marcela Piscitelli Pablo Alejandro Perna Haydee Karszenbaum

The spatial sampling interval, as related to the ability to digitize a soil profile with a certain number of features per unit length, depends on the profiling technique itself. From a variety of profiling techniques, roughness parameters are estimated at different sampling intervals. Since soil profiles have continuous spectral components, it is clear that roughness parameters are influenced b...

A. Golchin A. Mousavi Koupar K. Atashnama

Afforestation, as a tool to mitigate carbon emission is constrained by available land areain several countries, but Iran has the potential of plantation. In doing so, differences in soilstocks between tree species could give an indication of the effects of future managementchanges. Hence, a better understanding of tree species traits on soil properties is required topredict how changes in ecosy...

1997
J. Gan

Methyl bromide (CH,Br) is currently the most widely used soil fumigant, and its emission into the atmosphere after application reportedly contributes to ozone depletion in the stratosphere. Irreversible degradation and partially reversible sorption reactions affect the quantity of this fumigant reaching the soil surface and escaping into the atmosphere. Incubation studies in closed headspace vi...

Journal: Desert 2010
A Keshavarzi F Sarmadian

Investigation of soil properties like Cation Exchange Capacity (CEC) plays important roles in study of environmental reaserches as the spatial and temporal variability of this property have been led to development of indirect methods in estimation of this soil characteristic. Pedotransfer functions (PTFs) provide an alternative by estimating soil parameters from more readily available soil data...

Mohammad Ali Adibi Mohammad Jafari Mohammad Zadbar Seyed Akbar Javadi Somayeh Naseri

One of the ordinary methods to protect, rehabilitate, and enhance an ecosystemfunction in arid and semi-arid areas of the world is sand dune stabilization using biologicalpractices. Plantation of species on the soil plays a great role in sustainable management ofthe ecosystem. This research studies the effects of cultivation of Haloxylon ammodendronand Atriplex canescens on physical-chemical ch...

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