DEFINITIONS AND KEY POINTS FOR APPLIED ECOLOGY
| TERMS | DEFINITIONS | |
| Aridity |
The word arid means dry. The dry land is called arid land. This problem is called aridity. | |
| Arid climate |
Arid climate is defined as the climate in which precipitation is less than the evapotranspiration in most part of the year. |
| Biodiversity | The variety of living organisms in an ecosystem is called biodiversity. |
| Conservation | The management of the earth resources to restore and maintain balance between human requirement
and other species in the world is called |
| Water logging | The soil which is saturated with water is called water logged soil and this problem is called water logging. |
| Salinity | The soil in which salt crust is left due to evaporation
of water is called saline soil and this problem is |
| Pollution | Pollution has been defined by Odum (1971) as “the
undesirablechange in thephysical. chemical or |
| Eutrophieation | The increased productivity of lake caused due to enriehment of nutrients is called eutrophication. |
| Effluent | Industrial waste is called effluents. |
| Noise pollution | Any unwanted sound is called noise. The dumping of unwanted sound into atmosphere is called noise pollution. |
| Soil erosion | The wearing away of the soil by wind, water, snow or gravity is called soil erosion. |
| Desertification . |
Spreading of deserts to the green areas is called
deserti fication. . , |
| Land
management |
The operation by which land is prepared for crops plantation. harvesting is called land management. |
| Forest
management |
The ecosystemwith predominant species of tall
annual woody trees is called forest. The |
| Rangeland management | The grass land used by the animals for grazing is
called rangeland. The application of science on rangelandtor producing maximum number of grazing livestock regularly is called rangeland management,.. |
| Watershed | An area from which water fall in the form of rain or snow collects into a stream and river is called watershed. | |
| Watershed management | The storage of water for irrigation and for producing electricity by constructing dams and barrages is called water shed management. | |
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- DESERTIFICATION
