路域边坡六棱砖不同铺设方式下的生态修复效果研究

Study on ecological restoration effects of different laying methods of hexagonal bricks on roadside slopes

为了改善道路工程对生态环境造成的影响,通过改进路域边坡中六棱砖的铺设方式,提出一种平行于地面的六棱砖错位铺设方式,并对不同铺设方式下的生态修复效果进行研究。结果表明:错位式建植措施下的植被盖度高达83%,shannon—Wienner指数最高为0.67;土壤养分含量均表现为错位式>平铺式>对照区;同一建植方式下的地下生物量均高于地上生物量,不同建植方式下的生物量含量表现为错位式>平铺式>对照区;不同建植措施下的土壤容重表现为错位式(1.22 g/cm^(3))<平铺式(1.27 g/cm^(3))<空白对照区(1.35 g/cm^(3));错位式建植方式下的水土流失量最小,水土流失量与土壤容重成正相关性,与植被盖度和生物量之间成负相关性,且达到极显著水平。错位铺设建植方式下的生态修复效果最优,可有效提升土壤水源涵养功能,减少水土流失。

To reduce the impact of road engineering on ecological environment,through the improvement of the laying mode of hexagonal bricks in roadside slopes,the staggered laying mode of hexagonal bricks parallel to the ground is proposed,and the ecological restoration effects under different laying modes are studied.The results show that:(1)The vegetation coverage under dislocation planting measures is as high as 83%,and the Shannon Wiener index is the highest,which is 0.67.(2)The soil nutrient content showed as follows:dislocation type>tile type>control area.(3)Under the same planting mode,the underground biomass was higher than the aboveground biomass;The biomass content under different planting methods was as follows:dislocation type>tile type>control area.(4)The soil bulk density under different planting measures is as follows:dislocation type(1.22 g/cm^(3))<tile type(1.27g/cm^(3))<blank control area(1.35g/cm^(3));(5)The amount of soil and water loss under the dislocation planting mode is the smallest and it has a positive correlation with soil bulk density,a negative correlation with vegetation coverage and biomass,and reaches a very significant level.The ecological restoration effect under the staggered laying and planting mode is the best,which can effectively improve the soil water conservation function and reduce soil erosion.