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【摘 要】
：
退耕还林还草是治理黄土高原水土流失的有效措施。科学分析现有土地及其利用结构是退耕还林还草战略实施的重要保证。论文应用科学抽样数据资料,分析了黄土高原地区土地、耕
【机 构】
：
北京师范大学资源与环境科学系,北京师范大学资源与环境科学系,北京师范大学资源与环境科学系 北京100875,内江师范学院,四川内江641002,北京100875,北京100875
【出 处】
：
自然资源学报
【发表日期】
：
2002年04期
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