水土保持学报2011，Vol.25Issue(2)：72-77,6.
G111公路讷嫩段9种护坡灌木根系增强土壤抗蚀性比较
Comparison of the Soil Anti-erodibility Enhanced by Nine Shrub Roots at the Section from Nehe to Nenjiang of the G111 Highway
摘要
Abstract
The segment from Nehe to Nenjiang of the national highway G111 is one of most serious sandstorm areas.Observed the root morphological distributions of nine northeastern common green shrubs by the whole root mining method first, determined the erosion-index of the nine shrub roots by hydrostatic collapse method according to the soil particles, and finally using principal components analysis analyzed the total 25 factors which related to soil anti-erodibility.The results indicated that: Different tree species with distinct enhancement effect on soil anti-erodibility, as with the soil depth increase, the corrosion index goes downward.Besides, the relationship between the soil erosion index (S) and the immersion time (t) was a three times function curve in each different species (R2≥0.82).Micro-aggregates, organic matter, available K,＞5 mm,0.5～2 mm large soil aggregates,＜1 mm root biomass and root length were all riding key roles on the soil antierodibility enhancement effect, and their common factor variances were all more than 0.90.The order of the enhancement effect for the 9 species was: Syringa oblata ＞ Caragana arborescens ＞ Climbing cypress ＞ Cornus alba ＞ Northeast forsythia ＞ Ligustrum obtusi folium subsp.suave＞ Amorpha fruticosa ＞ Prunus tomentosa＞Weigela florida ‘Red Prince’.We recommend that the first 5 species could be widely popularized and applied in road vegetation recovery.关键词
G111公路/灌木根系/土壤抗蚀性/植被恢复Key words
G111 highway/ shrub roots/ soil anti-erodibility/ vegetation recovery分类
农业科技引用本文复制引用
徐文远,刘玉花,王晓春,孙龙,穆立蔷,赵玉芳..G111公路讷嫩段9种护坡灌木根系增强土壤抗蚀性比较[J].水土保持学报,2011,25(2):72-77,6.基金项目
黑龙江省交通厅重点科技项目(2008WJ037) （2008WJ037）
东北林业大学研究生创新资助项目(GRAM09) （GRAM09）
国家自然科学基金(30970481) （30970481）
