ES290 Lecture Notes - Lecture 3: Plant Breeding, Urban Revolution, Walkerton, Ontario
10 Jan 2019
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The global importance of this resource will be reviewed including shifting trends in production. The text examines the increased stress on the "agroecosystem" from over use, fertilizers and pesticides, and the loss of productive land to urbanization. For this lesson review the first two videos, the population bomb and valley at the crossroads to gain a stronger insight into the impacts human and economic growth are having on agroecosystems. Background notes - (from mather and chapman, 1995): The land surface and biological production is the globe"s principal resource base and the main supplier of food. Change over the last several centuries has included an intensification of food production on long- occupied areas, and an extension of production into new parts of the world. Cropland has increased by five times and yet this is still only about 10 per cent of the total land area.
