论文部分内容阅读
在分析菊苣植物生物生态学特征和秸秆泥边坡生态防护方法机理及优点的基础上,选择京台高速公路廊坊段土质路堤边坡作为试验区进行现场绿化试验,对比了3种乡土植物的植株高度、植被覆盖度、抗侵蚀能力和浅层坡体温度场、水分场变化情况。试验结果表明:菊苣是一种改善低液限粉质粘土边坡的理想先锋植物,坡面覆盖率达到90.74%;由于菊苣主根和须根均较发达,其抗侵蚀能力较强,有效根密度为31条/(10cm)3,土壤完全崩解时间为357min;菊苣可有效降低温度和水分的变化范围,减缓低液限粉质粘土边坡在热力条件下的风化侵蚀。菊苣生长无需专门养护,能增强绿化效果,在公路边坡生态防护建设中具有广泛的推广价值。
Based on the analysis of the bioecological characteristics of chicory plants and the mechanism and advantages of ecological protection methods for straw slime slope, the landside embankment slope of Langfang section of Jingtai Expressway was chosen as the experimental area to carry out on-site greening experiments. The comparison of the plants of three native plants Altitude, vegetation coverage, anti-erosion ability and shallow slope body temperature field, water field changes. The results showed that chicory is an ideal pioneer plant to improve the slope of low liquid limit silty soil, the slope coverage rate reached 90.74%. Because the main roots and fibrous roots of chicory are more developed, their anti-erosion ability is strong, and the effective root density is 31 / (10cm) 3, the soil completely disintegration time is 357min; chicory can effectively reduce the range of temperature and moisture, reduce the weathered erosion of low liquid limit silty clay slope in thermal conditions. Chicory growth without special conservation, can enhance the greening effect, ecological protection in highway slope construction has a wide range of promotional value.