鲁北内陆平原包括德州、聊城两地区和惠民地区一部分。由于属半干旱气候,年蒸发量大于降水量两倍多,且降水年内分配不均,形成“春季、初夏重旱,盛夏涝,秋又旱”的旱涝交替特点,为旱季土壤积盐创造了条件;加上平原地势低平,潜水位高以及排水骨干河道宣泄能力弱,使涝、盐危害普遍产生;在旱、涝、盐作用下,加上本区地 Lubei inland plains include Texas, Liaocheng two areas and part of the Huimin area. Due to the semi-arid climate, the annual evaporation is more than twice that of precipitation, and the distribution of precipitation is uneven during the year, resulting in the alternation of floods and droughts in spring, early summer, autumn and drought, The conditions; coupled with low flat terrain, diving high water level and draining the backbone of weak catharsis, waterlogging, salt hazards generally occur; in the drought, waterlogging, salt, coupled with the region