under nutrition
Consuming insufficient food to meet one's minimum daily energy needs for a long enough time to cause harmful effects. Compare malnutrition, over nutrition.
Subject:
Chapter 13 - Food Resources
undergrazing
Reduction of the net primary productivity of grassland vegetation and grass cover from absence of grazing for long periods (at least 5 years). Compare overgrazing.
Subject:
Traditional subsistence agriculture
Production of enough crops or livestock for a farm family's survival and, in good years, a surplus to sell or put aside for hard times. Compare industrialized agriculture, traditional intensive agriculture.
Subject:
Traditional intensive agriculture
Producing enough food for a farm family's survival and perhaps a surplus that can be sold. This type of agriculture uses higher inputs of labor, fertilizer, and water than traditional subsistence agriculture. See traditional subsistence agriculture. Compare industrialized agriculture.
Subject:
terracing
Planting crops on a long, steep slope that has been converted into a series of broad, nearly level terraces with short vertical drops from one to another that run along the contour of the land to retain water and reduce soil erosion.
Subject:
sustainable yield (sustained yield)
Highest rate at which a potentially renewable resource can be used without reducing its available supply throughout the world or in a particular area. See also environmental degradation.
Subject:
Sustainable agriculture
Method of growing crops and raising livestock based on organic fertilizers, soil conservation, water conservation, biological pest control, and minimal use of nonrenewable fossil fuel energy.
Subject:
Subsistence farming
Supplementing solar energy with energy from human labor and draft animals to produce enough food to feed oneself and family members; in good years there may be enough food left over to sell or put aside for hard times. Compare industrialized agriculture.
Subject:
ruminants
Grazing animals with complex digestive systems that enable them to convert grass and other roughage into meat and milk.
Subject:
riparian zones
Thin strips and patches of vegetation that surround streams. They are very important habitats and resources for wildlife.
Subject:
Pages
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