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desertification |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.03 sec. |
desertificationSpread of a desert environment into arid or semiarid regions, caused by climatic changes, human influence, or both. Climatic factors include periods of temporary but severe drought and long-term climatic changes toward dryness. Human factors include artificial climatic alteration, as through the removal of vegetation (which can lead to unnaturally high erosion), excessive cultivation, and the exhaustion of water supplies. Desertification drains an arid or semiarid land of its life-supporting capabilities. It is characterized by a declining groundwater table, salt accumulation in topsoil and water, a decrease in surface water, increasing erosion, and the disappearance of native vegetation. desertification a process by which fertile land turns into barren land or desert desertification [də‚zərd·ə·fə′kā·shən] (ecology) The creation of desiccated, barren, desertlike conditions due to natural changes in climate or possibly through mismanagement of the semiarid zone. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| With respect to environmental protection, Toyota engages in afforestation programs to combat desertification and has established the Toyota Environmental Protection Aid Program for China's Youth; in the traffic safety area, Toyota conducts Toyota Driver Communication hands-on safe-driving courses in cooperation with the Chinese Ministry of Public Security. Of that area, desertification has rendered 20 percent unfit for human use, and an additional 70 percent remains vulnerable. Pierre Rabhi's As In The Heart, So In The Earth: Reversing The Desertification Of The Soul And The Soil (1594770816, $14. |
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