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food security
access to enough safe, nutritious foods for a healthy lifestyle.
food insecurity
lack of access to nutritious food.
chronic malnutrition
condition where affected individuals do not get enough protein or other key nutrients.
over nutrition
condition in which food energy intake exceeds energy use and causes excess body fat.
subsidy
occurs when the land above an aquifer subsides or sinks
industrialized agriculture
method of agriculture characterized by the large scale operation, monoculture, and the goal of steadily measuring each crops yield.
monoculture
cultivation of a single crop, usually on a large area of land.
traditional agriculture
method of low-input agriculture characterized by the reliance on human labor and draft animals.
polyculture
growing several different crops on the same plot simultaneously with the use of solar energy and natural fertilizers
organic agriculture
growing crops without the use of synthetic pesticides. synthetic inorganic fertilizers, and genetic engineering.
green revolution
process of increasing crop production through industrialized agriculture
aquaculture
growing and harvesting of fish for human use in freshwater ponds, lakes, reservoirs, and paddies.
topsoil
soil underlying all forests, grasslands, and croplands. Stores and purifies water and supplies most of the nutrients needed for plant-growth.
desertification
condition when the productive potential of topsoil falls by 10% or more due to farming practices such as overgrazing, deforestation, and excessive plowing.
soil salinization
gradual accumulation of salts in upper soil laters that can stunt crop growth, lower crop yields, and eventually kill plants and ruin the land.
agrobiodiversity
the genetic variety of animal and plant species used on farms to produce food.
pest
any species that interferes with human welfare by eating society’s food.
synthetic pesticide
chemical used to kill or control populations of organisms considered undesirable
integrated pest management
program designed to reduce crop damage to an economically tolerable level with minimal use of synthetic pesticides by evaluating each crop and its pests as part of an ecosystem.
soil conservation
methods used to reduce topsoil erosion and restore soil fertility
organic fertilizer
organic material such as animal manure, green manure, and compost, applied to cropland as a source of plant nutrients.
synthetic inorganic fertilizer
mixture of organic plant nutrients applied to the soil to restore fertility and increase crop yields.
aquaponics
system of growing crops in water fertilized with the waste of farmed fish or other aquatic animals.
old-growth forest
uncut or regenerated that has not been seriously disturbed by human activities or natural disasters of 200 years or more.
second-growth forest
stand of trees resulting in secondary ecological secession. Develop after the trees in an area have been removed by human activities.
tree plantation
managed forest containing only one or two species of trees that are all the same age.
deforestation
temporary or permanent removal of large expenses of forests for agriculture, settlements, or other uses.
prescribed burn
carefully planned and controlled fire that removes flammable small trees and underbrush in the highest-risk forest areas.
debt-for-nature swap
arrangement in which participating countries act as custodians of protected forest reserves in return for foreign aid or debt relief
conservation concession
strategy in which governments or private conservation organizations pay governments or landowners in other nations to preserve their land’s natural resources for a set amount of time.
rangeland
unfenced grassland in temperature and tropical climates that supplies vegetation for grazing and browsing
pasture
managed grassland or enclosed meadow often planted with domesticated grasses or other vegetation to be grazed by livestock.
overgrazing
too many animals grazing in an area for too long, leading to reduced grass cover, which in turn leads to erosion that compacts soil and reduces its capacity to hold water.
buffer zone
outer zone surrounding a strictly protected inner care of a reserve where local people can extract resources sustainably.
biosphere reserve
area that contains a strictly protected core ecosystem surrounded by a buffer zone where local people can extract resources sustainably.
wilderness area
area that has not been disturbed by humans and that is protected by law from all harmful human activities.
biodiversity hotspot
area rich in highly endangered endemic species.