水土保持学报2017，Vol.31Issue(5)：158-163,6.DOI:10.13870/j.cnki.stbcxb.2017.05.025
沙棘柔性坝对砒砂岩沟道泥沙粒径分布及有机质影响
Effects of Seabuckthorn Flexible Dam on Sediment Particle Size Distribution and Organic Matter in the Soft Sandstone Gully
摘要
Abstract
In order to study the effects of the seabuckthorn flexible dam on sediment in the soft sandstone gully,field experiments were carried out in the soft rock region of Inner Mongolia,and based on the experimental data of single seabuckthorn flexible dam after a rainstorm,effects of seabuckthorn flexible dam on sediment particle size distribution and organic matter,and sediment retention effect of the dam were analyzed through employing the method of comparison.Results showed that single seabuckthorn flexible dam improved the organic matter content of gully sediment,and it had silt separation and fine sorting function and good sediment retention effect.The content of sediment organic matter increased from upstream to down-stream of the seabuckthorn flexible dam,and the content of organic matter in middle sediment layer was higher than those in surface and bottom layer.The sediment particle size increased first and then decreased from upstream to downstream of the gully,and the same tendency appeared along the sediment profile of a rainfall deposit.After a rainstorm,the average thickness of silt deposited in unit area of seabuckthorn flexible dam was 0.369 m,and it was significantly higher than that of the control group.关键词
沙棘“柔性坝”/砒砂岩区/泥沙有机质/泥沙粒径分布/粗颗粒泥沙/拦沙效果Key words
seabuckthorn flexible dam/soft sandstone region/sediment organic matter/sediment particle size distribution/coarse sediment/sediment retention effect分类
农业科技引用本文复制引用
王浩,杨方社,李怀恩,刘兴誉,马艺坤,张鸿敏,韩琛..沙棘柔性坝对砒砂岩沟道泥沙粒径分布及有机质影响[J].水土保持学报,2017,31(5):158-163,6.基金项目
国家自然科学基金项目(51279163) （51279163）
西北旱区生态水利工程国家重点实验室培育基地项目(2016KFKT-4)(西安理工大学) （2016KFKT-4）
陕西省自然科学基金项目(2010JQ5003) （2010JQ5003）
