青云翻译

For many years the vegetation degradation, desertification, soil erosion is the deterioration of ecological environment

Many years vegetation degradation, desertification, soil erosion and other problems is the deterioration of the ecological environment

For many years vegetation degenerates, the land desertification, questions and so on soil erosion are the phenomena which the ecological environment worsens

For many years, vegetation degradation, desertification and soil erosion problem is deterioration of the ecological environment in the

Many years vegetation degradation, desertification, soil erosion and other problems is the deterioration of the ecological environment