GEOG 5 Lecture Notes - Lecture 1: United States Forest Service, Wildlife Corridor, Rangeland
Document Summary
Geography 5 midterm: based on empirical evidence on the curvature of the earth. North star: as we walk north, it becomes less of an angle. Tundra or alpine: europe: n america, n europe, siberia, not in ca, high latitudes where snow melts seasonally, little precipitation, permafrost. Permafrost: permanently frozen ground that hinders drainage, so that the thawed upper zone of soil is usually waterlogged during summer. 7 months of frozen ground: short trees and shrubs, mosses, lichens grasslike sedges, global conservation status is good. Boreal forest: ca (yosemite), north america and eurasia, cold winters, little precipitation, poor soil, little permafrost under the surface, conifers w/ needle like leaves whose minimal surface area prevents water loss by evaporation. Temperate grassland: s africa, pompus of argentina, steppes of russia, ca: central valley was a grassland, occur between deserts and temperate deciduous forests, hot summer and cold winter, perennial grasses, 90% of underground.