引用黄河泥沙对下游平原土地质量及其演变的影响

Effect of Using Suspended Sediment Load in the Yellow River on Land Quality and Its Evolution in the Lower Reaches

通过 5 0年来引黄用沙的总量及其分布研究 ,在结合野外调查采样分析的基础上 ,系统研究了泥沙对土壤质地、肥力、盐分运移规律及其景观的影响 ,并提出在欣赏引黄成就的同时 ,应密切关注泥沙堆占土地、次生沙化、次生盐碱化、淤塞排泄河道等问题。

It is one successful method to use suspended sedim ent load in the Yellow River to improve saline and alkali soil,aeolian soil to increase land productivity,but also one most significant human activity to dist urb the landscape ecosystem in the lower reaches. Based on the outdoor investiga tion and sampling,through researching on the amount and distribution of used su spended sediment load,this paper systematically analyzed the impact of suspende d sediment on soil texture,fertility and salinity motion, as well as landscape ecosystem. Meanwhile,we should pay close attention to aggrieving cropland, seco nd-salinization,second-desertification,restarting flood drainage etc caused by using suspended sediment load when we enjoy the great accomplishment of using the Yellow River.