2007 2008 Natural Cover

Represents natural vegetative cover in the watersheds of the Toronto and Region Conservation Authority On-screen digitzied from aerial photos at 1:2000; forest/successional/beach-bluff/meadow minimum size of 2500 m2; no minimum size for wetlands本数据集表征多伦多及地区保护局（Toronto and Region Conservation Authority）流域范围内的自然植被覆盖情况。数据基于1:2000比例尺航空照片通过屏幕数字化方式获取；其中森林、演替植被、海滩崖坡、草甸类地物的最小上图面积为2500平方米，湿地类地物无最小面积限制。