Utilisation de l'analyse numérique de photographies aériennes dans le cadre de la cartographie à très grande échelle des indicateurs végétaux des gîtes larvaires à culicidés et des sols halomorphes
Analyse numérique ; Cartographie thématique ; Cartographie à grande échelle ; Généralités sur la géographie ; Gîte larvaire à Culicidés ; Indicateur végétal ; Photo-interprétation ; Sol ; Sol halomorphe ; Télédétection ; Télédétection aéroportée
The indicative value of vegetation is used for locating Culicidae larval breeding sites as well as for mapping halomorphicsoils. The E. I. D. and the I.N.R.A. tried to use remote sensing for detailed mapping of the vegetation of coastal areas
Agropedology ; Land development ; Resource management ; Saline soil ; Salinisation ; Soil ; Soil properties ; Tunisia
Les sols affectés par les sels couvrent environ 1,5 million d'hectares en Tunisie, surtout dans le centre et le sud du pays. A côté de l'exploitation extensive des sols halomorphes améliorés pour les cultures pluviales, certaines plaines salées
The A. presents the meeting and its objective: to discuss the various concepts of soil horizons and the role that soil horizons play in soil characterization, classification and mapping. This number of Catena contains selected papers of this meeting.
Soil horizons are the results of pedological processes and classes of soil horizon descriptions are seen as fundamental to soil classification. A fuzzy-sets approach to horizon classes is suggested to deal with the intergrading and multivariate
Soil profile investigations were carried out within a national 7 km grid. The profiles were classified according to the 1974 FAO-Unesco Soil Classification System. This paper describes the regional variations in soil profile development
and the related dominant soil formation processes.
Soil materials, a layer based approach to soil description and classification
Soil horizons
Australia ; Cartography ; Concept ; Land use ; New South Wales ; Soil ; Soil classification ; Soil properties
The Soil Conservation Service of New South Wales (Australia) is mapping soil landscapes at a scale of 1:100,000 and is using a soil layer based entity, termed soil materials, as the basic entity for soil description and classification. This paper
Seasonal dynamics of soil-water pressure in a cracking clay soil
Clay ; England ; Model ; Oxfordshire ; Precipitation ; Seasonal variation ; Soil ; Soil properties ; Soil water ; United Kingdom
This paper describes the results of an investigation of changes in soil water pressure head and its relationship to the macropore network in a cracking clay soil at Brimstone Farm, Oxfordshire, UK.
Struktura pudniho fondu v CSR. (Structure of soil fund in the Czech Socialist Republic)
A survey of soil fund structure in the CSR for the height soil zones of hydromorphic soils, chernozems, brown soils, illimeric podzol soils, brown forest soils and mountain podzol soils. (MS).
A Tolnai-dombsag genetikai talajtipusai és talajlepusztulasa. (Genetic soil types and soil erosion in the Tolna Hills)
The loess covered and minutely dissected hilly region of high relief is described by various soil types (brown forest soils, chernozem brown soils, chernozems, earthy barren grounds, hydromorphous soils). Surfaces are classified according
In 1985 a plot study was started on sloping cultivated loess soils in South-Limbourg (The Netherlands) to evaluate the effects of various cropping systems of fodder maize on runoff, soil loss and crop yield under natural rainfall. In 1988
, in addition a soil micromorphological investigation was undertaken of the soil layer at and immediately below the soil surface on the experimental plots. In this paper the results of the micromorphological analysis of the processes of soil structure
degradation and crust formation are presented including the applicability of the McIntyre model of soil crust formation.
This paper focuses on the 7 major soil reference books that were published between 2000 and 2012 : Handbook of Soil Science (2000 and 2012), Encyclopedia of Soil Science (2002 and 2006), Encyclopedia of Soils in the Environment (2005), Encyclopedia
of Soil Science (2008), and Soil Science — Reference collection (2009). These soils science reference books contain 1920 articles authored by some 2000 authors. The Handbook of Soil Science covers the basic subdisciplines (physics, chemistry, biology
, pedology) most extensively whereas the encyclopedia have more applied entries/articles. Overall, these intradisciplinary reference works show that the soil science discipline is vibrant and has a rapidly expanding knowledge base.
[b1] Univ. of Wisconsin, Dep. of Soil Science, Madison, Etats-Unis
Detailed measurements of soil nutrients, runoff and sediment discharge were made in two plots about 200 m2 each in a plantation of Aleppo and Brutia Pine in the Mediterranean climatic region of Israel. One of the plots was affected by a moderate
wildfire at the end of summer 1988. The results suggest that light and moderate forest fires may increase soil fertility without cousing a marked difference in soil runoff and erosion.
Concept ; Soil ; Soil classification ; Soil properties ; Soil science ; Taxonomy ; United States
There are many more possibilities for designating horizons and layers in field descriptions than there are when applying the defined diagnostic horizons that are used in Soil Taxonomy. The first set are based on qualitative judgements, the latter
are based on quantitative measurements. The Soil Survey in the United States has found it useful to keep the two kinds of horizon designations separate.
This study compares several methodologies for conducting flow detachment tests. Particularly, differences in initial soil moisture conditions and soil surface characteristics due to the combined effects of various types of crops and applied raindrop
kinetic energy caused differences in soil detachability by overland flow. Furthermore, soil sampling in different periods of the year resulted in variations in soil detachment indicating a seasonal trend in soil detachability.
In Las Cuevas north of Azua 80 farmers were interviewed about their soils : 48% of them were aware of soil erosion, but had little interest in soil conservation. None of the farmers named more than six kinds of soil. Stoniness or soil depth were
not considered by them to be important in defining soil quality. - (DWG)