Results 71 to 80 of about 155,696 (253)

Emission of Climate-Relevant Gases in Organic and Conventional Cropping Systems [PDF]

open access: yes, 2008
In 81 commercial farms in Germany, emissions of the greenhouse gases CO2, CH4 and N2O from crop production have been computed by model-based analyses. The considered influence factors comprise farm structure, mass and energy inputs as well as cultivation
Huelsbergen, K.-J., Kuestermann, B.
core  

Chemical composition of the humus layer, mineral soil and soil solution of 200 forest stands in the Netherlands in 1995 [PDF]

open access: yes
A nationwide assessment of the chemical composition of the soil solid phase and the soil solution in the humus layer and two mineral layers (0-10 cm and 10-30 cm) was made for 200 forest stands in the year 1995.
Leeters, E.E.J.M., Vries, W., de
core   +1 more source

Polycyclic Aromatic Hydrocarbons Content in Contaminated Forest Soils with Different Humus Types

open access: yesWater, Air and Soil Pollution, 2018
The aim of the study was to determine polycyclic aromatic hydrocarbon (PAH) content in different forest humus types. The investigation was carried out in Chrzanów Forest District in southern Poland.
J. Lasota, E. Błońska
semanticscholar   +1 more source

Guide to the nature and methods of analysis of the clay fraction of tephras from the South Auckland region, New Zealand. [PDF]

open access: yes, 1983
The manual outlines some of the more common laboratory procedures available for qualitatively and quantitatively analysing the composition of the tephric clays, many of which are difficult to determine because of their short range order or 'amorphous ...
Lowe, David J., Nelson, Campbell S.
core   +1 more source

Thomas Borchmann & Bendt Torpegaard Pedersen: Intimideringskommunikation

open access: yesMedieKultur: Journal of Media and Communication Research, 2009
Orla Vigsø
doaj   +3 more sources

Spruce and beech as local determinants of forest fungal community structure in litter, humus and mineral soil

open access: yesFEMS Microbiology Ecology, 2018
&NA; Beech forests reaches its native distribution limit in SE Norway, but is expected to expand substantially northwards due to climate warming. This may potentially result in a fundamental transformation of contemporary Northern European forests, with ...
J. Asplund   +3 more
semanticscholar   +1 more source

HEAVY METAL ACCUMULATION IN ROOTS OF ТARAXACUM OFFICINALE WIGG [PDF]

open access: yes, 2018
Soil is an active acceptor for some elements, heavy metals in particular. Microelements are firmly sorbed and interact with soil humus layer. At the same time some plants are resistant to soil contamination and can be used as bioindicators.
Komarova, Irina
core  

Бонитетна оценка на хумусното съдържание за отглеждане на различни селскостопански култури

open access: yesПочвознание, агрохимия и екология, 2011
The soils, climate аnd relief characteristics expressed by numerical values (evaluation rates) mainly reflected in the land evaluation. The quantity and quality of humus defines the soil fertility.
Венета Кръстева
doaj  

CO2FIX at the landscape level - an application for the Veluwe area, the Netherlands [PDF]

open access: yes, 2001
The carbon fixation model CO2FIX was adapted to run on landscape scale, and was applied to the Veluwe area, a forested region in the Netherlands. After a simulation of 500 years, the average carbon stock per hectare in the forest products compartment is ...
Nabuurs, G.J., Schelhaas, M.J.
core   +1 more source

Research Reports from the Programme for Belize Archaeological Project, Volume Three [PDF]

open access: yes, 2009
Table of Contents : Archaeological Investigations of the Programme for Belize Archaeological Project: An Introduction to Volume Three / by Fred Valdez, Jr. and Rissa M.
Trachman, Rissa M., Valdez, Fred Jr
core   +1 more source

Home - About - Disclaimer - Privacy