浦阳江下游江岸草本植物根系对土壤抗冲性的影响
发布时间：2019-01-04 22:25
【摘要】：采用7级目测法对浦阳江下游江岸草本植物进行了调研,筛选出了当地的优势草本,并对其根系密度、土壤抗冲性增强效应进行了分析,补充了植物根系对江岸土壤抗冲性影响的基础资料。研究发现:(1)浦阳江下游江岸的优势草本植物是狗牙根、水蓼、芦苇、芒、双穗雀稗;(2)5种草本植物根系(d≤1.0mm)在土壤表层(0—30cm)均有较多分布,根系密度随着土层的垂直分布深度增加而减少,其规律服从指数函数关系分布;(3)5种优势草本根系均能增强浦阳江下游江岸土壤的抗冲性,增强值分别如下:芦苇14.16,芒12.53,狗牙根5.39,双汇雀稗5.01,水蓼4.41。5种优势草本均能在浦阳江消落带植被构建中发挥土壤抗冲性增强效应,尤其是芦苇与芒的增强效应最为明显。
[Abstract]:Based on the investigation of herbaceous plants in the lower reaches of Puyang River by 7 grade visual test, the dominant herbaceous plants in Puyang River were screened out, and their root density and soil anti-scour enhancement effects were analyzed. The basic data of the effect of plant roots on the soil scour resistance of river banks were supplemented. The main results are as follows: (1) the dominant herbaceous plants in the lower reaches of Puyang River are Phyllostachys davidii, Polygonum hydropiper, Reed, awns, and Paspalum paspalum; (2) the root system (d 鈮，
本文编号：2400868
[Abstract]:Based on the investigation of herbaceous plants in the lower reaches of Puyang River by 7 grade visual test, the dominant herbaceous plants in Puyang River were screened out, and their root density and soil anti-scour enhancement effects were analyzed. The basic data of the effect of plant roots on the soil scour resistance of river banks were supplemented. The main results are as follows: (1) the dominant herbaceous plants in the lower reaches of Puyang River are Phyllostachys davidii, Polygonum hydropiper, Reed, awns, and Paspalum paspalum; (2) the root system (d 鈮，
本文编号：2400868
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