Agriculture and Agri-Food Canada Crop Type Map of Canada

Understanding the state and trends in agriculture production is essential to combat both short-term and long-term threats to stable and reliable access to food for all, and to ensure a profitable agricultural sector. Starting in 2009, the Earth Observation Team of the Science and Technology Branch (STB) at Agriculture and Agri-Food Canada (AAFC) began the process of generating annual crop type digital maps. Focusing on the Prairie Provinces in 2009 and 2010, a Decision Tree (DT) based methodology was applied using optical (Landsat-5, AWiFS, DMC) and radar (Radarsat-2) based satellite images. Beginning with the 2011 growing season, this activity has been extended to other provinces in support of a national crop inventory. To date this approach can consistently deliver a crop inventory that meets the overall target accuracy of at least 85% at a final spatial resolution of 30m (56m in 2009 and 2010).

洞悉农业生产的现状与趋势，对于抵御对稳定可靠食物供应构成之短期与长期威胁，以及确保农业领域之盈利性发展，实为关键所在。自2009年起，加拿大农业与农业食品部（AAFC）科学技术局（STB）之地球观测团队，着手构建年度作物类型数字化地图。聚焦于2009及2010年之草原省份，采用基于光学（Landsat-5，AWiFS，DMC）及雷达（Radarsat-2）卫星图像之决策树（DT）方法。自2011年生长季节始，该活动已扩展至其他省份，以支撑国家作物清查。迄今为止，该策略能够持续提供符合总体目标精度至少85%的作物清查结果，最终空间分辨率为30米（2009及2010年为56米）。