单选题:保护该水源地山地阳坡生态环境应采取的主要对策是(  )

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题目内容:
保护该水源地山地阳坡生态环境应采取的主要对策是(  ) A.保护高山灌丛
B.防治水土流失
C.维持林地的采育平衡
D.扩大梯田面积
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答案解析:

我国南水北调方案中涉及的某水源地总面积约94700K㎡,表1为该区域部分土地覆被类型面积构成,图4示意该区域部分土地覆被

我国南水北调方案中涉及的某水源地总面积约94700K㎡,表1为该区域部分土地覆被类型面积构成,图4示意该区域部分土地覆被类型的地形构成。据此完成9~11题。该水

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B  How to Be a Winner   Sir Steven Redgrave   Winner of 5 Ol

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