紫穗槐根系形态与固土护坡效应研究

Effects of Amorpha fruticosa Root System on Slope Soil and Water Conservation

摘要:

摘要：本文采用紫穗槐根系的现场调查和根系扫描图像数据的方法，通过对根长量、根长密度、根体积和单位体积土中含根量4根系指标数据的测定和分析，研究根系对边坡土体水土保持的效果。结果显示，紫穗槐属于深根性直根树种，主干根的优势极为显著，分布最深可达50 cm土层以下，须根在各个土壤层次中均有不同径级根系的分布，根长和根量指标也随着土层的加深而均匀递减。 根系能够对土体起到锚固和加筋作用，对边坡表层土体的水土侵蚀起到有效保护作用。

Abstract:

Abstracts:Based on the field observation data and roots scaning photos,we studied the effects of Amorpha fruticosa root system on the slope soil and water conservation by analyzing the index data from root length,root length density,root volume and root content per soil unit.The result showed that A.fruticosa had the feature of deep and tap roots with main root as deep as 50 cm underground, and the fine roots with different diameter distributed in all of different soil levels,and the root length and root volume decreased with the soil level deepening.We concluded that the root system of A. fruticosa functions efficiently in soil reinforcement and soil erosion resistance of slope surface.