Traduction de «Processus d'évolution de la matière organique du sol » (Français → Anglais) :

evolution process of the soil organic component

organic maturation

SOM [Abbr.]

dynamics of soil organic matter | dynamics of soil organic matter system | DSOM [Abbr.]

partition coefficient between soil organic matter and water

organic content of soils

organic content of soils

Definition: This block contains a wide variety of disorders that differ in severity and clinical form but that are all attributable to the use of one or more psychoactive substances, which may or may not have been medically prescribed. The third character of the code identifies the substance involved, and the fourth character specifies the clinical state. The codes should be used, as required, for each substance specified, but it should be noted that not all fourth character codes are applicable to all substances. Identification of the psychoactive substance should be based on as many sources of information as possible. These include sel ...[+++]f-report data, analysis of blood and other body fluids, characteristic physical and psychological symptoms, clinical signs and behaviour, and other evidence such as a drug being in the patient's possession or reports from informed third parties. Many drug users take more than one type of psychoactive substance. The main diagnosis should be classified, whenever possible, according to the substance or class of substances that has caused or contributed most to the presenting clinical syndrome. Other diagnoses should be coded when other psychoactive substances have been taken in intoxicating amounts (common fourth character .0) or to the extent of causing harm (common fourth character .1), dependence (common fourth character .2) or other disorders (common fourth character .3-.9). Only in cases in which patterns of psychoactive substance-taking are chaotic and indiscriminate, or in which the contributions of different psychoactive substances are inextricably mixed, should the diagnosis of disorders resulting from multiple drug use (F19.-) be used. | Modifiers The following fourth-character subdivisions are for use with categories F10-F19: Code Title .0 Acute intoxication A condition that follows the administration of a psychoactive substance resulting in disturbances in level of consciousness, cognition, perception, affect or behaviour, o ...

Soil organic matter is composed of organic material (plant root remains, leaves, excrements), living organisms (bacteria, fungi, earthworms and other soil fauna) and humus, the stable end-product of the decomposition of organic material in the soil by the slow action of soil organisms.

increasing efforts to reduce soil erosion and increase soil organic matter, to remediate contaminated sites and to enhance the integration of land use aspects into coordinated decision-making involving all relevant levels of government, supported by the adoption of targets on soil and on land as a resource, and land planning objectives.

Despite the importance of maintaining the organic matter content of soil, there is evidence that decomposing organic matter in the soil is frequently not sufficiently replaced under arable cropping systems which are tending towards greater specialisation and monoculture.

* The conference will also examine the situation in relation to organic matter including measures which could be taken to redress the decline and increase soil organic matter levels.