高陡岩质边坡覆绿植物成活的生态因子分析——以安庆市大龙山集贤关为例

Ecological Factor Analysis of Vegetation Restoration on the High and Steep Rock Slope——Taking Jixianguan,Dalongshan,Anqing City as an Example

在岩质边坡覆绿研究中,多以覆绿方法的研究为主,对影响边坡覆绿植物成活的生态因子分析较少。以安庆市集贤关废弃采石场高陡岩质边坡覆绿工程为例,结合生态地质学理论探索了高陡岩质边坡条件下影响覆绿植物成活的生态因子,并对研究区内高陡岩质边坡覆绿植物成活的生态因子进行了野外调查。结果表明:高陡岩质边坡条件下影响覆绿植物成活的生态因子主要为覆绿边坡岩体裂隙因子、岩体内的温度因子和岩体内的绝对湿度因子;覆绿边坡岩体裂隙连通性良好,岩体裂隙率为1.77%~4.58%,岩体内体积含水率大于1%,岩体内温度在5℃~28℃之间,能够满足覆绿植物成活的要求。该研究结果可为高陡岩质边坡覆绿工作的开展提供一定的理论依据。

Of the studies on the greening on rock slopes,the research on the method of covering the green is mostly focused on,however the analysis of ecological factors affecting the survival of the green plants on the slope is insufficient. In order to explore the ecological factors affecting the survival of overlying revegetation plants under high and steep rock slope conditions,taking the revegetation project of the abandoned quarry in Jixianguan of Anqing city as the research object,and combining with the theory of ecological geology,this paper investigates the fracture rate of rock mass in the study area and the temperature and absolute humidity in the rock.By analyzing the ecological factors,the paper figures out the ecological factors affecting the survival of overlying vegetation restoration under high and steep rock slopes are mainly the development of rock mass fissures and the temperature and absolute humidity in the rock mass,and the paper concludes that the threshold conditions for the greening of high-steep rock slopes are:the fractures have good connectivity and the fracture rate needs to reach 1.77%~4.58%;the volumetric water content in the rock is greater than 1%;the internal temperature of rock mass should be between 5℃and 28℃,which can meet the requirements of plant survival.The research results can provide a theoretical basis for the development of greening work on high and steep rock slopes.