摘要
选取黄土区大型排土场不同复垦年限的植被为研究对象．分析了陡坡地（36°～42°）3种典型乔灌草植被根系的剖面分布特征及不同复垦年限（1～14年）不同复垦模式植被根系对土壤抗蚀抗冲性的影响。结果表明，与原地貌土壤剖面根系分布不同的是，排土场乔灌草的根系分布（审≤1mm）从10cm土层开始，随着土层深度的增加。呈现出幂函数减少的趋势；干土层出现的深度依次为刺槐林地〉草地〉柠条林地；不同复垦年限不同复垦模式（1～14年）55个样点的统计分析表明，土壤的抗蚀性指标和抗冲性指标都与根系密度在极显著水平上呈直线关系。
Taking different-reclaimed-years vegetation as the researching objects, it analyzed roots distribution of arbor and shrub and herb of three typical kinds in steep slope（36°～42°）and the effect of different-reclaimed-years and modes on anti-erosibility and anti-scourability of soil. The results showed, that being different from that of original geomorphy, below surface about 10 cm, hair roots of arbor and shrub and herb（ Ф≤1 mm） distribution followed exponential function; The order of dry soil layer： Robinia pesudoacacia〉herb〉caragana korshinskii; The statistic analysis showed, that there existed linar relation between the indexs of anti-erosibility and anti-scourability of soil and roots density in extremly obvious level.
出处
《水土保持学报》
CSCD
北大核心
2006年第2期35-38,143,共5页
Journal of Soil and Water Conservation
基金
国家自然科学基金项目(40071077
40471132)
山西农业大学青年创新基金(2004065)资助
关键词
矿区
大型排土场
植被根系
抗蚀抗冲性
mine area
large-stackpile
vegetation roots
soil anti-scourability and anti-erosibility
