نتایج جستجو برای: pedo
تعداد نتایج: 145 فیلتر نتایج به سال:
Agricultural land use and management affect surface albedo thus the climate. Increasing of cropland could enhance reflection solar radiation, counteracting radiative forcing (RF) greenhouse gases (GHGs) local warming. However, knowledge is lacking on how agricultural practices under conditions, benefits individual practices. In this study, field measurements were made in 15 paired plots at a si...
Contaminated soils are widespread and contamination is known to impact several biotic soil processes. But it still not clear what extent affects carbon efflux (CO 2 ) occurring through microfauna respiration. Regarding the large stocks of organic (Corga) stored in soils, even limited changes outputs fluxes may modify atmospheric CO concentration with important feedbacks on climate. In this stud...
The Laacher See volcano (LSV) is located at the western margin of Neuwied Basin, central part Middle Rhine Basin Germany. Its paroxysmal Plinian eruption c. 13 ka ago (Laacher event; LSE) deposited a complex tephra sequence in whilst distal ashes became one most important chronostratigraphic markers Central Europe. However, some other impacts on landscape formation have thus far been largely ne...
Dr. Rainer Gasche; Institute for Meteorology and Climate ResearchAtmospheric Environmental Research Division; Forschungszentrum Karlsruhe GmbH Kreuzeckbahnstr. 19; D-82467 Garmisch-Partenkirchen, Germany Tel: +49 8821 183 132; Fax: +49 8821 183 294; URL: http://www..fzk.de eMail: [email protected] 1. Abstract: Hitherto identified habitats of chemolithoauotrophic ammonia oxidizers (CAO) a...
About 25% of European livestock intake is based on permanent and sown grasslands. To fulfill rising demand for animal products, an intensification of livestock production may lead to an increased consumption of crop and compound feeds. In order to preserve an economically and environmentally sustainable agriculture, a more forage based livestock alimentation may be an advantage. However, beside...
Estimating pesticide leaching risks at the regional scale requires the ability to completely parameterise a pesticide fate model using only survey data, such as soil and land-use maps. Such parameterisations usually rely on a set of lookup tables and (pedo)transfer functions, relating elementary soil and site properties to model parameters. The aim of this paper is to describe and test a comple...
Abstract. The term “Bergstraßenneckar” (BSN) refers to an abandoned course of the river Neckar. It flowed in a northern direction east Rhine eastern part Upper Graben southwestern Germany. former meandering merged with ca. 50 km further north site present-day confluence near Mannheim. palaeo-channels are still traceable by their depressional topography, satellite images and curved boundaries ad...
During my dental training, I was taught intraoral radiography using only rectangular collimation. Once out of the dental school in 1993, I realized that not many practices used rectangular collimators. Often-heard reasons for not using a rectangular collimator are cone-cutting errors and the fact that it is easier to aim with a circular collimator. Later, during my training as a dental and maxi...
In high-mountain areas, Pleistocene glaciations and erosion-related processes erased most of the pre-existing landforms soils. However, on scattered stable surfaces, ancient soils can be locally preserved for long periods, retaining valuable palaeoenvironmental information. Such relict surfaces survived during either through coverage by non-erosive, cold-based, ice or as nunataks. Thus, such re...
The relationships between pedogenetic processes and fluvial-coastal dynamics in the Po Plain have been reconstructed through sedimentological analysis correlation of ca. 170 core data chronologically constrained by 376 radiocarbon dates. Vertically stacked, weakly developed paleosols within Upper Pleistocene Holocene mud-prone strata testify to intermittent pedogenesis, periodically interrupted...
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