嫩江地区1：100万草地面状资源分布数据集（1993年）

本数据集所反映的草地包括植被覆盖度>5%的各类天然草地，次生草地，树木郁闭度<0.3%的疏林草地，灌木郁闭度<0.4的灌丛草地，有放牧利用价值的高寒灌丛，以及施以人工措施的改良草地和人工草地。本图集最小图斑面积为：天然草地4 平方毫米，人工草地2 平方毫米。地面面积小于4 平方千米的天然草地和小于2 平方千米的改良草地被视为零星小块草地，本图集不予以反映。

The grasslands included in this dataset cover various natural grasslands with vegetation coverage greater than 5%, secondary grasslands, sparse woodland grasslands with tree canopy density < 0.3%, shrub grasslands with shrub canopy density < 0.4, alpine shrublands with grazing utilization value, as well as artificially improved grasslands and artificial grasslands.
The minimum mapping unit specified in this atlas is 4 square millimeters for natural grasslands and 2 square millimeters for artificial grasslands.
Natural grasslands with a ground area smaller than 4 square kilometers and improved grasslands with a ground area smaller than 2 square kilometers are considered scattered small grasslands, which are not included in this atlas.