ENVS 2060 Lecture Notes - Lecture 1: Solonetz, Organic Matter, Chernozem
8 Dec 2017
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Example of how soil management is important; copan a royal city 250-900. Mayan history is difficult (destroyed earlier monuments) Time to play sports, had time to do other stuff than just survive. Erosion, droughts, floods, decline of fresh water. Top soil is the important part of the soil, due to the organic matter that it holds. 13% class 1-6 but only 4. 8% class 1-3. Most of canada is to cold to sustain. Looking at the world population, it is increasing without new land being created. One of the reasons for the rising population is the increase in agricultural. Our plants now can yield high compared to before. We can create enough food but doesn"t mean it always reaches people *looking at africa. Global warming is taking affect to our agricultural. The more biomass the better for the soil. Managed system is a closed system compared to a natural system which is open.
