不合理的土地利用是导致生态环境严重破坏的更为直接的原因。
Unrational use of land is the direct reason for the deterioration of ecological environment.
对土地的不合理利用导致了土地沙漠化。
It was human irrational activities that induced land desertification.
不合理的土地利用方式和对森林的不合理砍伐导致脆弱的土壤系统和森林生态系统的严重退化、生产力下降和严重的水土流失。
Irrational land use and forest cutting have resulted in the serious degradation, the decrease of land productivity and the water and soil erosion in the fragile soil system and forest system.
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