Environmental Resources worksheet

Land degradation is a natural or human induced

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Land degradation is a natural or human-induced process that decreases the future ability of the land to support crops or livestock. The progressive degradation which induces unproductive desert-like conditions on formerly productive rangeland (or tropical dry forest), is called desertification. It reduces the agricultural productivity of economically valuable land, forces many organisms out, and threatens endangered species. What is overgrazing? What effect does this have on rangelands? Overgrazing is the destruction of vegetation caused by too many grazing animals consuming the plants in a particular area, leaving them unable to recover. Overgrazing accelerates land degradation, which decreases the future ability of the land to support crops or livestock. Several studies have reported that moderate levels of grazing encourage greater plant diversity. What strategies can be employed for the management and conservation of forests and rangelands? Rangeland management includes seeding in places where plant cover is sparse or absent, conducting controlled burns to suppress shrubby plants, constructing fences to allow rotational grazing, controlling invasive weeds, and protecting habitats of endangered species. Most livestock operators use public rangelands in a way that results in their overall improvement .
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Environmental Resources Worksheet ENV/100 Version 2 5 Agriculture .1 What is the difference between industrialized agriculture and subsistence agriculture? What effect do these methods of agriculture have on the environment? Industrialized agriculture produces high yields, which allows forests and other natural areas to remain wild instead of being converted to agricultural land. Industrialized agriculture uses modern methods requiring large capital input and less land and labor than traditional methods. Subsistence agriculture requires labor and a large amount of land to produce enough food to feed a family. Industrialized agriculture comes with costs, such as soil degradation and increased pesticide resistance in agricultural pests. .2 What is one agricultural challenge, other than soil erosion, that society faces? Explain your answer. There is considerable concern that much of the nation's prime agricultural land is falling victim to urbanization and suburban sprawl by being converted to parking lots, housing developments, and shopping malls. The reduction of agricultural land is cause a decrease in crops and will cause prices to increase of certain products. How would you describe sustainable agriculture? How does it affect the environment? In regards to agriculture, what are the advantages and disadvantages involved with genetic engineering? Sustainable agriculture uses methods that maintain soil productivity and a healthy ecological balance while minimizing long-term impacts. Genetic engineering, the manipulation of genes to produce a particular trait, can produce more nutritious crops or crop plants that are resistant to pests, diseases, or drought. Concerns about genetic engineering include unknown environmental effects.
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  • Spring '12
  • Schroeder
  • Erosion, soil erosion, Environmental Resources Worksheet

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