BIOL 350 Lecture Notes - Lecture 3: Soil Retrogression And Degradation, Biogeochemistry, Ecosystem Services
18 Oct 2016
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Document Summary
We don"t keep enough of the sources or we dump too much waste into the waste is when we have a problem. What are the key sources of inputs (resources) that are reasons of concerns. What are the problems of outputs (emissions) And then out of the crop and arable land, a lot of the soil conditions are not usable. Significant arable soil is in most part not viable soil (america, europe, india, china: we have dramatically increased arable land in the world (africa, latin america, and asia), mostly in the second half of the century. In the last 25 year, arable land per capita (since population is growing substantially) is expected to drop 20-40% Soil degradation (not putting enough back into it) Most sites of mineral extraction have destroyed forest or farmland/ arable land (where it"s good to grow food!) Forests: not just a fuel, fiber and lumber.
