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高速公路边坡、互通区绿化是非常重要的,以鹰瑞高速公路边坡和互通绿化区为研究对象,采用TDR法,开展不同模式的互通区、边坡区土壤水分夏季动态的监测。结果表明,互通绿化区两种模式(乔木模式、灌木模式)之间夏季水分动态规律:0-10cm-、10-20cm两土层的变化幅度大于20-30cm、30-40cm,总体趋势是7月9日之前比较平稳,随后逐渐增加并达到一个峰值后逐渐下降并趋于平稳。两种模式之间,不同土层之间有明显差异,在0-10cm-、10-20cm两土层两种模式含水量基本一致,在20-30cm、30-40cm两土层两种模式之间差异较大,表现出乔木模式大于灌木模式。两种边坡绿化区的变化规律比较一致,但在含水量高峰期岩质边坡略高于土质边坡。互通区土壤水分日动态总的变化趋势均为从06:00到18:00点,土壤含水率总体呈下降趋势,午后略有波动,但无明显峰值。相比互通区,边坡土壤含水率的日波动比较大。
It is very important to green the slope and inter-exchange area of the highway. Taking the Yingrui-Rui Expressway slope and the inter-communicating greening area as the research object, the TDR method is used to monitor the summer dynamic of soil moisture in the inter-communicating area and the slope area. The results showed that the dynamics of summer moisture between the two modes (tree pattern and shrub pattern) in the inter-communal greening area: the variation range of 0-10cm- and 10-20cm soil layers was larger than 20-30cm and 30-40cm, and the overall trend was 7 Before September 9, it was relatively stable, then gradually increased and reached a peak, then gradually decreased and stabilized. Between the two modes, there are obvious differences between different soil layers. The water content of the two soil layers in 0-10cm- and 10-20cm layers is basically the same. In the two modes of 20-30cm and 30-40cm, The difference between the larger, showing that the arbor mode is greater than the shrub mode. The variation patterns of the two kinds of slope greening areas are relatively consistent, but the rock slope is slightly higher than the soil slope at the peak water content. The total dynamic change of soil moisture in the inter-working area was from 06:00 to 18:00, and the soil moisture content tended to decrease. In the afternoon, there was a slight fluctuation but no obvious peak. Compared with the interflow area, the diurnal variation of soil water content in slope is relatively large.