1. A decline to a lower condition, quality, or level.
2. A decrease in value for a designated use.
3. A worsening of quality or condition.
4. Changing to a lower state (a less respected
5. Diminution or reduction of strength, efficacy, or
value; degeneration; deterioration.
6. The act or process of degrading (lowering to an inferior level) WWWebster Dictionary.
7. The process by which something is made worse,
especially the quality of land.
8. The process of degeneration.
9. The reduction in grade, quality, yield, etc.
10. To spoil or destroy the beauty or quality of.
11. (Biological) - A type of
soil degradation consisting of the mineralization of humus and an increase in
the activity of micro-organisms responsible for organic decay, resulting in an
overall decrease in organic matter.
12. (Biological) - The diminution of biological productivity or diversity. (Sargent and Lowcock 1991)
13. (Chemical) - A number of
types of soil degradation that may involve one or more of the following
processes: leaching of nutritive elements; acidification; toxicities, other than
excess of salts.
14. (Ecosystem) - Any process or activity that removes or lessens the viability of ecosystem functions and processes, and hence biodiversity. Dunster & Dunster 1996.
15. (Ecosystem) - Processes
or activities that weaken an ecosystem, adversely affecting biological
16. (Environmental) - Exhaustion or destruction of a potentially renewable resource such as air, water, forest, or wildlife by consuming it at a rate faster than it is naturally renewed. If such use continues, the resource can become nonrenewable or nonexistent on a human time scale. Also see sustainable yield. http://www.geog.ouc.bc.ca/conted/onlinecourses/enviroglos/e.html
17. (Environmental) - The
process by which the environment is progressively contaminated overexploited and
destroyed. (Source: RRDA)
18. (Forest - Semi-natural) - A subset of semi-natural forests with some of the principle characteristics and key components of native ecosystems; a return to a semi-natural forest is unlikely to occur in a reasonable amount of time (i.e., decades) without human intervention. http://www.fscus.org/html/about_fsc/who_we_are/glossary_of_terms.html#d
19. (Forest) - A long-term reduction of tree crown cover towards but not exceeding the minimum accepted `forest' threshold. IPCC (draft version developed by a Task Force) FAO. 2002. Draft Analytical Framework on Forest-Related Definitions.
20. (Forest) - A reduction of the canopy cover or stocking within the forest. Explanatory note: For the purpose of having a harmonized set of forest and forest change definitions, that also is measurable with conventional techniques, forest degradation is assumed to be indicated by the reduction of canopy cover and/or stocking of the forest through logging, fire, windfelling or other events, provided that the canopy cover stays above 10% (cf. definition of forest). FAO 2000
21. (Forest) - A reduction of the canopy cover or stocking within the forest through logging, fire, windfelling or other events, provided that the canopy cover stays above 10%. In a more general sense, forest degradation is the long-term reduction of the overall potential supply of benefits from the forest, which includes wood, biodiversity and any other product or service. FRA 2000. FAO. 2002. Draft Analytical Framework on Forest-Related Definitions.
22. (Forest) - Biological,
chemical or physical processes which result in the loss of the productive
potential of natural resources in areas covered by forests and/or used by
agriculture. Degradation may be permanent, although some forest areas may
recover naturally or with human assistance
http://europa.eu.int/comm/dg08/forests/en/en4_6.htm and http://yahwood.com/glossary_uk.htm
23. (Forest) - Change of
forest class (from closed to open forest) which negatively affects the stand or
site and lowers production capacity. Degradation is not reflected in the
estimates of deforestation
24. (Forest) - Changes
within the forest class which negatively affect the stand or site and, in
particular, lower the production capacity. Thus degradation is not reflected in
the estimates of deforestation.
25. (Forest) - Changes within the forest class, for example, from closed to open forest, which negatively affect the stand or site and, in particular, lower the production capacity. These lands are considered apart from deforestation. FAO 1997.
26. (Forest) - Generally
defined as a reduction in tree density and/or increased disturbance to the
forest that results in the loss of forest products and forest-derived ecological
27. (Forest) - Temporary or permanent reduction in the density, structure, species composition or productivity of vegetation cover. Grainger 1996.
28. (Forest) - The
degradation of forest environments, through processes such as destructive
logging, burning, or invasion of disturbed habitats by weedy or less useful
29. (Forest) - The
degradation or impoverishment of forests, measured in terms of loss of
biodiversity (which includes genetic, species and ecosystem diversity) and
economic, cultural and ecological utility and stability, resulting from the
selective removal of trees or other forest plant and animal species.
30. (Forest) - The
ecologically deleterious depletion by human activity of standing woody biomass
and organic matter in forests, often associated with over-utilization of the
forest for fuel or timber.
31. (Forest) - The long-term reduction of the overall potential supply of benefits from the forest, which includes wood, biodiversity and any other product or service. FAO 2000
32. (Forest) (Bolivia) -Degradación: Proceso que consiste la transformación de un sistema, orden, estructura o sustancia compleja, a un nivel inferior. así tenemos la degradación biológica, de los bosques. Source: Luis Castello [email protected] Adjunto sírvase encontrar la versión no oficial y premilinar del Glosario Forestal elaborado por el Proyecto de Apoyo a la Coordinación e Implementación del Plan de Acción Forestal para Bolivia.
33. (Forest) (Canada - BC) - The diminution of biological
productivity or diversity.
34. (Forest) (Italy) -Degradation concerns only human induced damages or site alterations. The origin of these damages become by ongoing or made in the past human actions and refers to irrational forest harvesting, fire, grazing, etc., which usually reduce permanently the site index and may negatively affect the stand. Castellani, C., et al 1983.
35. (Forest) (Morocco and Yemen) -
An aggression on the forest as ecosystem, leading to a negative change in all
its biotope (fauna, flora, soil, micro/meso climate). The productivity of the
whole ecosystem is lower. Degradation could lead to erosion, drought,
desertification and other calamities. Mohammed Ellatifi,
36. (Genetic) - Deleterious
change in a native taxon's gene pool due to addition of non-local genes. The
gene source can be plants of a) the same genus or species, but a non-local
Californian taxon, ecotype or cultivar; b) the same genus, but a foreign
37. (Land) - A human induced
or natural process which negatively affects the land to function effectively
within an ecosystem, by accepting, storing and recycling water, energy, and
38. (Land) - Any form of
deterioration of the natural potential of land that affect ecosystem integrity
either in terms of reducing its sustainable ecological productivity or in terms
of its native biological richness and maintenance of resilience.
39. (Land) - Reduction or
loss of the biological or economic productivity and complexity of rain-fed
cropland, irrigated cropland, or range, pasture, forest or woodlands resulting
from natural processes, land uses or other human activities and habitation
patterns such as land contamination, soil erosion and the destruction of the
40. (Land) - The decline in
condition or quality of the land as a consequence of misuse or overuse,
involving changes to soil, flora, fauna, water quality and quantity, visual
quality and production levels by humans.
41. (Land) - The decline in
condition or quality of the land as a consequence of human activities.
42. (Land) - The
deterioration or total loss of the productive capacity of land for present and
future use. Such loss occurs mainly because of various forms of soil erosion (by
wind and water) and of chemical and physical deterioration.
43. (Land) - The erosional removal of materials from one place to another, which lowers the elevation of streambeds and floodplains. Dunster & Dunster. 1996.
44. (Land) - The temporary
or permanent lowering of the productive capacity of land.
45. (Land) -The "reduction
or loss, in arid, semi-arid and dry sub-humid areas, of the biological or
economic productivity and complexity of rainfed cropland, irrigated cropland, or
range, pasture, forest and woodlands resulting from land uses or from a process
or combination of processes, including processes arising from human activities
and habitation patterns, such as: (i) soil erosion caused by wind and/or water;
(ii) deterioration of the physical, chemical and biological or economic
properties of soil; and (iii) long-term loss of natural vegetation."
46. (Log) - Any defect that
lowers the grade or quality of a log.
http://forestry.about.com/library/glossary/blforgld.htm and http://www.pfmt.org/glossary/d.htm .
47. (Natural Habitat) -
Modifications which substantially reduce a habitat's ability to maintain viable
populations of its native species.
48. (Natural Resources) - Any decline in the quality of natural resources
commonly caused by human activities.
http://www.emrc.org.au/res/glossary.html#terms and http://www.epa.nsw.gov.au/soe/95/28.htm
49. (Natural Resources) - Any decline in the quality of natural resources or
the viability of ecosystems, caused directly or indirectly by human
50. (Natural Resources) -
The result of the cumulative activities of farmers, households, and industries,
all trying to improve their socio-economic well being.
51. (Range) - The
degeneration of a site caused by biotic or abiotic factors, which results in a
lowered successional status to the point that ecological potential is
52. (Soil) - A decrease in
soil quality as measured by changes in soil properties and processes, and the
consequent decline in productivity in terms of immediate and future production.
53. (Soil) - A set of types
of soil degradation involving one or more of the following processes: loss of
soil physical structure; sealing and crusting of soil surface; reduction in
permeability; compaction of depth; increase in macroporosity; limitations to
54. (Soil) - Any significant
reduction in the fertility of a soil.
55. (Soil) - General
lowering of land surfaces by erosion.
56. (Soil) - Loss of
friability or fertility of soil resulting from leaching
57. (Soil) - The decline in
a soil's fertility as a result of loss of organic matter, erosion by wind or
water, compaction, salinization, contamination, or acidification.
58. (Soil) -The changing of
a soil to a more highly leached and weathered state, usually accompanied by
morphological changes such as the development of an eluviated, light-coloured A
59. (Species) - The state or condition of a species or group which exhibits degraded forms; degeneration. http://www.mso.anu.edu.au/~ralph/OPTED/v003/wb1913_d.html
60. (Streambed) - A
progressive lowering of the channel bed due to scour. Degradation is an
indicator that the stream's discharge and/or sediment load is changing. The
opposite of aggradation.
61. (Streambed) - The general lowing of the streambed by erosive processes, such as scouring by flowing water. http://www.orst.edu/Dept/owrri/directory/glossary.htm#~D~
62. (Water) - Deterioration
in water quality due to contamination or pollution; makes water unsuitable for
other desirable purposes.
63. (Wood) - Reduction in
wood quality resulting from insect damage, fungal decay or fungal staining.