Especially in the near decades, these reasons result in a series of ecological problems, such as pasture retrogression, vegetation sparsity, soil erosion and dust devil.
英
美
释义
特别是近几十年来,农牧交错区因开垦草地、过度放牧,造成草地退化、植被稀疏、土地沙化、水土流失、沙尘风暴等一系列严重的生态问题。
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