Class Notes (836,127)
Canada (509,645)
ENV1101 (56)
Lecture

Class 12 - Soil & Food.docx

5 Pages
98 Views
Unlock Document

Department
Environmental Studies
Course
ENV1101
Professor
Sonia Wesche
Semester
Winter

Description
SoilFoodFood SecurityThe 5 As of food security o Availability o Affordability o Accessibility o Acceptability o AdequacyFood Production not the real current problemKeeping Up With Population Growth The Green Revolution1940s1960s and beyondTransfer of technologies to developing nations o Heavy equip chemical pesticides synthetic fertilizers irrigationIntroduction of high yield hybrid varieties HYVswheat rice corn o Intensification vs extensificationStill going on o Development of new crops pest resistance expansion into other regions o Population growth 2year wheat and rice 4year up to mid 80sThreats to Food SecuritySoil DegradationChanging dietsFood to energyClimate changeTechnology new problemsConflict PoliticsPoliciesThreats to Food Security Soil Degradation90 of the worlds food from landbased agriculture o 38 of land surface dedicated to agricultureMaintenance of soilcornerstone of civilizations What is SoilA mixture system of organic material inorganic material and living organismsSoil AvailabilitySome places have lots of good soil other may have none at allSoil if FragileIt takes decades or more to form a few inches of soilSoil can be removed from poorly managed land in a single season
More Less

Related notes for ENV1101

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit