On humus
نویسندگان
چکیده
منابع مشابه
IMPACt OF hUMUS SUBStAnCES On GROUnDWAtER QUALIty
humic substances (hS) constitute a large part of organic matter found in aquatic environment. the hS strongly interact with both inorganic and organic pollutants. Occurrence of the hS in groundwater accounts for many problems with treatment procedures. these natural components cause an increased intensity of water colour, affect its taste and odour, hinder removal of iron, manganese and other m...
متن کاملComment on "Fire-derived charcoal causes loss of forest humus".
Wardle et al. (Brevia, 2 May 2008, p. 629) reported that fire-derived charcoal can promote loss of forest humus and belowground carbon (C). However, C loss from charcoal-humus mixtures can be explained not only by accelerated loss of humus but also by loss of charcoal. It is also unclear whether such loss is related to mineralization to carbon dioxide or to physical export.
متن کاملEffect of liquid humus and calcium sulphate on soil aggregation
An Ultic Haploxeralf soil collected from ridges built into the slopes of the Coastal Mountain Range of Central Chile was used in applications of humic and fulvic acids (HFA) extracted from sludge from sewage treatment plants, in combination with gypsum (CaSO4). A total of 12 treatments were applied by combining four doses of HFA (0, 20, 30 and 40 t ha-1) with three doses of gypsum (0, 1.2 and 6...
متن کاملHumus and time: a love story
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متن کاملAn Investigation of Humus Disintegration by Spatial-Temporal Regression Analysis
We examine the hypothesis of an increase of humus disintegration by analyzing chemical substances measured in the seepage water of a German forest. Problems arise because of a large percentage of missing observations. We use a regression model with spatial and temporal effects constructed in an exploratory data analysis. Spatial dependencies are modelled by random effects and an autoregressive ...
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ژورنال
عنوان ژورنال: The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
سال: 1850
ISSN: 1941-5966,1941-5974
DOI: 10.1080/14786445008646529