ENV100Y5 Lecture Notes - Lecture 11: Transpiration, Estuary, Carbon Sink

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7 Feb 2016
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ENV100Y5 Full Course Notes
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The important global cycles: geological, hydrological, and biogeochemical cycles. Some characteristics of the water, c, n and p cycles. The nature of human impacts on biogeochemical cycles. Env100 oct 17, 2011 - biogeochemical cycles mega-quarry in melancthon, on the 2,316-acre quarry application (largest quarry in ontario history) would extract 600 million litres of water a day massive impact on groundwater and aquifers. Generalized box model of a biogeochemical cycle carbon cycle carbon is part of all organic molecules carbon moves out of atmosphere into biotic reservoirs via photosynthesis; from biota to atmosphere via respiration highly complex. Humans affect the carbon cycle carbon mobilization burning fossil fuels (geosphere atmosphere) deforestation, burning of biomass (biosphere atmosphere) cattle and rice production (biosphere atmosphere) livestock produce 18% of greenhouse gases - more than cars! 1. 5 billion cattle worldwide - major impact of intensive livestock farming on the environment. The nitrogen cycle complex; many forms of nitrogen. Nh3 (ammonia); nitrous oxides: no2 (nitrite), no3 nitrate)

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