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.防止水土流失
C.维持林地的采育平衡 D.扩大梯田面积
参考答案：
选择题：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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