黑土带
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the northeastern black soil zone 东北黑土区
cold zone and black soil 寒地黑土
·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on RS and GIS, the cropland change characteristics and spatial pattern in black soil zone of Northeast China from 1986 to 2000 were analyzed.
在遥感和GIS技术的支持下，分析了东北黑土区1986 ~ 2000年耕地资源变化特征与空间格局。
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