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当前位置: 首页 > 文章 > 5种护坡植物根系土壤抗侵蚀性比较 东北林业大学学报 2013 (9) 63-67
Position: Home > Articles > Soil Erosion Resistance of Five Plant Species Roots for Slope Protection Journal of Northeast Forestry University 2013 (9) 63-67

5种护坡植物根系土壤抗侵蚀性比较

作  者：
宋坤;陈玉霞;潘晓星;穆立蔷
单  位：
哈尔滨市园林科学研究所;东北林业大学
关键词：
根系分布特征;土壤抗冲性;土壤抗蚀性;根系生物量;路基边坡
摘  要：
采用原状土冲刷水槽法(测定土壤抗冲性)、静水崩解法(测定土壤抗蚀性),研究了紫穗槐(Amorpha fruticosa)、柽柳(Tamarix chinensis)、沙棘(Hippophae rhamnoides)、杨柴(Hedysarum fruticosum var.mongolicum)、小叶锦鸡儿(Caragana microphylla)根系分布特征及根系对土壤抗冲性、抗蚀性的增强效应。结果表明:植物根系主要分布在0～20 cm深的土层内,根系生物量随土层深度增加而减少,细根在根系生物量组成中占有重要地位;根系对土壤抗冲性有较强的增强作用,根茎φ≤1 mm的根系生物量、1 mm<φ≤3 mm根系生物量、土壤有机质质量分数与抗冲指数呈显著的正相关关系;根系对土壤抗蚀性有较强的增强作用,φ≤1 mm根系生物量、土壤有机质质量分数与抗蚀指数呈显著的正相关关系;紫穗槐、柽柳根系增强土壤抗侵蚀作用的能力较强,可作为主要水土保持树种使用。
译  名：
Soil Erosion Resistance of Five Plant Species Roots for Slope Protection
作  者：
Song Kun;Chen Yuxia;Pan Xiaoxing;Mu Liqiang;Northeast Forestry University;Harbin Research Institute of Garden Science;
关键词：
Root distribution characteristics;;Soil anti-scouribility;;Soil anti-erodibility;;Root biomass;;Roadbed side slope
摘  要：
An experiment was conducted to study the root morphological distribution and the enhancement effects on soil antiscouribility and soil anti-erodibility of roots of Amorpha fruticosa,Tamarix chinensis,Hippophae rhamnoides,Hedysarum fruticosum var. mongolicum and Caragana microphylla. The soil anti-scouribility was identified by using the undisturbed soil trough scouring method and the soil anti-erodibility was identified by hydrostatic collapse method. The root biomass are mainly distributed in 0-20 cm layer of soil and the root biomass decreases with the increaseing of the soil depth. It is the thin roots which is important in the composition of root biomass. Roots have significantly positive enhancement effects on soil anti-scouribility. Biomass of ≤1 mm roots,1-3 mm roots,and the organic matter content of soil are significantly positive correlation with soil anti-scouribility values. Roots have significantly positive enhancement effects on soil anti-erodibility. Biomass of ≤1 mm roots and the organic matter content of soil are significantly positive correlation with soil anti-erodibility values. Roots of Amorpha fruticosa and Tamarix chinensis have significantly positive enhancement effects on soil erosion resistance. Amorpha fruticosa and Tamarix chinensis can be planted as main varieties of trees on conservation of water and soil.

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