CAJ | 학술논문

在梯形平底水槽中，用塑料草模拟了沉水植物对水流的影响。结果表明：（1）流速不同、相对植物高度不同的情况下。植物对流速的影响是不同的；（2）含沉水植物的水流垂向流速分布曲线存在一条流速分界线，在其上部流速变大，下部流速变小，流速分界线在植物冠层以上，在相对水深h／H=0．3附近；（3）两株植物叶片之间是否有交叉重叠对水流的阻碍作用是有区别的：有交叉重叠时会额外增加水流阻力；在流速分界线以下，叶片有交叉重叠时流速战小幅度较大。
재제형평저수조중，용소료초모의료침수식물대수류적영향。결과표명：（1）류속불동、상대식물고도불동적정황하。식물대류속적영향시불동적；（2）함침수식물적수류수향류속분포곡선존재일조류속분계선，재기상부류속변대，하부류속변소，류속분계선재식물관층이상，재상대수심h／H=0．3부근；（3）량주식물협편지간시부유교차중첩대수류적조애작용시유구별적：유교차중첩시회액외증가수류조력；재류속분계선이하，협편유교차중첩시류속전소폭도교대。
In the trapezoidal flat flume, plastic grass was used to current, There are several results as follows. （1） When velocity simulate the effect of submerged plants on the or relative height of the plants is different, the impact of plants on the current is different. （2）When submerged plants are panted in the tank, there exists a velocity dividing line in the vertical velocity distribution curve. The velocity will decrease when below the di- viding line, while the velocity will increase when above the dividing line. The velocity dividing line is above the plants canopy, and is on the position where the relative depth 0a/I-I） is about 0.3. （3）Whether leaves overlap between two plants or not is different on the resistance to water-flow. Overlapping leaves will increase the re- sistance to water-flow additionally. Below the dividing line, velocity reduction rate is much bigger when leaves overlan.