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黑龙江省黑土退化现状及土地荒漠化危机 被引量:1

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摘要 黑龙江省是我国的黑土分布区。初垦时,黑土层平均厚度为60-100厘米。如今,黑土层厚度已下降到20-40厘米,并且以平均每年3—3.5毫米的速度流失。
作者 郭洪军
出处 《黑龙江国土资源》 2007年第4期34-35,共2页 Heilongjiang land and Resources
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