GE CLST M1A Lecture Notes - Lecture 9: Permafrost, Food Security, Central Valley Project
21 Dec 2017
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Document Summary
Our most important interaction with environment is obtaining food. Current food production is sufficient to meet worldwide demand. What are problems: food distribution, insufficient fund to purchase food. Irish potato famine, it exports food while their people were starving, many countries have done so. World hunger: malnutrition: abnormal physiological condition caused by inadequate, unbalanced or excessive consumption of macronutrients and or micronutrients. Including undernutrition, micro deficiency, and over-nutrition: undernourishment: lasting for at least one year of inability to acquire enough food to meet dietary and energy needs, hunger: chronic undernourishment. But future worldwide need for food will increase: Human population size and rate of growth, increased living standards. To meet future demand, need to use more available land suitable for agriculture. Can no longer simply move to another place. Differ from natural ecosystems: crop plants grown in monoculture---one plant in an area: depleting the soil of certain nutrients. Crop rotation can help reduce the effect, or fallow land.
