نتایج جستجو برای: soil formation

تعداد نتایج: 703087  

2015
Hongtu Xie Jianwei Li Bin Zhang Lianfeng Wang Jingkuan Wang Hongbo He Xudong Zhang

Glomalin-related soil protein (GRSP) contributes to the formation and maintenance of soil aggregates, it is however remains unclear whether long-term intensive manure amendments alter soil aggregates stability and whether GRSP regulates these changes. Based on a three-decade long fertilization experiment in northeast China, this study examined the impact of long-term manure input on soil organi...

Journal: :Chemosphere 2010
M R Heal C A Dickey K V Heal R T Stidson M Matucha J N Cape

Previous work has indicated that the soil is important to understanding biogeochemical fluxes of trichloroacetic acid (TCA) in the rural environment, in forests in particular. Here, the hydrological and TCA fluxes through 22 in situ soil columns in a forest and moorland-covered catchment and an agricultural grassland field in Scotland were monitored every 2 weeks for several months either as co...

2014
Alejandro Velasco-Castrillón Mark B. Schultz Federica Colombo John A. E. Gibson Kerrie A. Davies Andrew D. Austin Mark I. Stevens

Terrestrial life in Antarctica has been described as some of the simplest on the planet, and mainly confined to soil microfaunal communities. Studies have suggested that the lack of diversity is due to extreme environmental conditions and thought to be driven by abiotic factors. In this study we investigated soil microfauna composition, abundance, and distribution in East Antarctica, and assess...

2017
Frank S. Gilliam Radim Hédl Rebecca L. McCulley Jim A. Nelson FRANK S. GILLIAM RADIM HÉDL MARKÉTA CHUDOMELOVÁ REBECCA L. MCCULLEY JIM A. NELSON

Plant ecologists have long been interested in aspect-related contrasts of montane forests. Few studies have assessed correlation (linkage) among vegetation strata; fewer have included soil microbial communities. This study assessed contrasts in overstory, spring herbaceous, and soil microbial communities between northeast (NE) and southwest (SW) -facing slopes in a second-growth West Virginia h...

2014
Joël Amossé Roxane Kohler-Milleret Jean-Michel Gobat Renée-Claire Le Bayon

chlorotica Aporrectodea rosea X-ray tomography Burrow networks Microcosms Earthworms are considered as key actors of soil processes at different spatial and temporal scales and provide essential ecosystem services linked to climate regulation or primary production. However, little is known about their basic functional roles (e.g. organic matter decomposition, soil structuring processes) in pert...

Journal: :E3S web of conferences 2023

This article presents the results of scientific research aimed at rational use water resources in Khorezm region under conditions shortage, prevention secondary salinization irrigated areas, reduction wastage from irrigation networks, and improvement efficient technologies reducing formed collector-sink networks.

A. Abtahi A. Gholami H.R. Owliaie M. Baghernejad

ABSTRACT- Paddy soils make up the largest anthropogenic wetlands on earth. Present study was performed to investigate and compare soil formation of paddy soils with long-term rice cultivation history with non-paddy soils and study the effect of waterlogging on soil pedogenesis. Soil samples were taken from paddy and non-paddy soils derived from the same calcareous parent materials. Some pedogen...

ژورنال: علوم آب و خاک 2015
ترابی گل سفیدی, حسین, مرادی نسب, وحید,

Terraces are old geomorphic surfaces that are not related to present streams and are best places to study the effect of time on soil formation (chronosequence). This research was carried out to study some physico-chemical parameters especially different forms of iron as soil development indices on terraces of Karaj River in Hassan-Abad, southern Tehran. To determine soil development indices in ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

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