半湿润地区的水土流失和土地沙化在很大程度上与人类不合理的开发利用有关。
Soil erosion and desertification in the semimoisture zone have a great connection with irrational exploitation.
本文以半湿润地区大汶河流域为例，研究提出水污染控制方案和水生态环境恢复的措施。
This research, regards Dawen river in semi-humid region as example, has put forward water pollution control projects and aquatic ecological environment restoration measurements.
该区属暖温带半湿润地区，植物区系属华北植物区系，与蒙古、长白植物区系毗邻，是个过渡地带。
Lying in warm temperate semi humid climate zone, its flora is of North China flora, neighboring Mongolian flora and Changbai flora.
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