GEOG 2030 Lecture Notes - Lecture 4: Land Cover, Genetic Erosion, Food Security
28 May 2017
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Document Summary
Land use the human use of the earth"s land-based attributes or resources (keeping in mind the social, political, & economic reasons for this use) Land cover the physical & biological cover over the surface of land, including water, vegetation, bare soil, &/or artificial structures . Gec (global environmental change) changes in the biophysical environment manifesting at the global or local scale but so widespread as to constitute a global phenomenon. Cumulative e. g. land-use transformations like deforestation global scale activity leads to global as well as local effects. 31% of land area earth is covered by forests. 1. 6 billion people rely directly on forests for: food, water, clothing, traditional medicine, shelter, etc. Absorbs co2 from the environment to reduce effects of climate change. Deforestation: a practice of cutting down forests for the benefit of few at the expense of many. Deforestation most common in: brazil, indonesia, mexico, papau new guinea, and russia.
