Land Management Practices (Cropping History) in the Border Rivers-Gwydir & Namoi CMA (1998-2008)

Land Management Practices for the Border Rivers-Gwydir and Namoi Catchment Management Authority (CMA) Areas in northern New South Wales. This dataset includes a base map of paddock boundaries (and paddock scale object) attributed with cropping history and other land cover information. This product builds on and finalises older cropping history mapping which involved the manual digitisation of crop paddock boundaries. This work was extended across the full extent of the two catchments using object recognitions software -'Definiens'. Polygons where attributed for presence of cropping for summer and winter cropping cycles between 1998 and 2008, as we as for other land cover and land management types.;\r\nReport: Fisher, A. & Turner. (2009). Mapping candidate native non-woody vegetation extent for the Border Rivers-Gwydir-Namoi catchments, northern New South Wales. Department of Environment, Climate Change & Water. unpublished.;\r\n;\r\nScale is commensurate with recommended map scale of cropping paddock boundaries (1:100,000). Polygons produced via image segmentation are of finer scale.

新南威尔士州北部边境河流-吉德伊尔（Border Rivers-Gwydir）与纳莫伊（Namoi）流域管理局（Catchment Management Authority, CMA）辖区内的土地管理实践数据集。本数据集包含带有作物种植历史与其他土地覆被信息属性的农田地块（paddock）边界底图（及地块尺度地物）。本产品基于并完善了早期的作物种植历史制图工作——该工作曾通过人工数字化方式绘制农田地块边界。本工作依托对象识别软件Definiens，覆盖了两个流域的全部范围。多边形要素附带了1998年至2008年间夏季与冬季种植周期的作物种植情况属性，以及其他土地覆被与土地管理类型的相关属性。
参考文献：Fisher A与Turner（2009），《新南威尔士州北部边境河流-吉德伊尔-纳莫伊流域候选本土非木本植被分布范围制图》，环境、气候与水资源部，未出版成果。

制图比例尺与推荐的农田地块边界制图比例尺（1:100000）一致。通过图像分割生成的多边形要素具有更精细的空间尺度。