基于植被物种丰富度的山西省高速公路植被物种多样性调查研究

Investigation and Research of Vegetation Species Diversity of Expressway in Shanxi Province Based on Vegetation Species Richness

以山西省高速公路植被物种多样性为研究对象,选取山西省内6条运营高速公路共10处路堑边坡开展实地调查,探讨在不同地理区位、绿化用地地质类型、绿化生态修复施工技术、运营时间等因素下,山西省植被物种丰富度差异。通过调查分析可知:高速公路植被物种多样性受地理区位、绿化用地地质类型、绿化生态修复施工技术等3个要素的影响较大,受运营时间影响较小。其中,晋南地区高速公路植被物种多样性最佳、晋中地区次之、晋北地区最弱;黄土边坡植被物种多样性优于其他不良地质边坡;应用生态修复技术后的边坡植被物种多样性明显优于传统穴栽植被种植技术。

Taking the vegetation species diversity of expressways in Shanxi Province as the research object,this paper selects ten cutting slopes in six operational expressways to carry out the field investigation.Under different geographical locations,geological types of green land,green ecological restoration construction technologies,operation time,and other factors,the difference in Shanxi′s vegetation species richness is discussed.Through the investigation and analysis,it can be seen that the vegetation species diversity of expressway is greatly affected by three factors:geographical location,geological type of green land,and green ecological restoration construction technology,and less affected by the operation time.The vegetation species diversity of expressway is optimal in south Shanxi,the second in middle Shanxi,and the poorest in north Shanxi.The vegetation species diversity of the loess slope is better than that of other poor geological slopes.The diversity of slope vegetation species after applying the ecological restoration technology is significantly better than that of applying the traditional hole planting technology.