Assessing the Use of Poplar Tree Systems as a Landfill Evapotranspiration Barrier with the SHAW Model
Assessing the Use of Poplar Tree Systems as a Landfill Evapotranspiration Barrier with the SHAW Model
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DOI：
10.1177/0734242x04045429
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发表时间：
2004-08
影响因子：
3.9
通讯作者：
G. Preston;R. Mcbride
中科院分区：
文献类型：
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作者：
G. Preston;R. Mcbride
使用杨树系统（PTS）作为废弃垃圾填埋场的蒸散屏障，作为渗滤液管理的一种选择正在引起人们的关注。这项研究涉及对同步热水 (SHAW) 模型进行现场测试，以验证其能够可靠地估计加拿大安大略省南部垃圾填埋场的杨树蒸腾作用、土壤体积含水量和土壤温度。然后使用该模型来估计深层排水并确定年轻的 PTS 对垃圾填埋场覆盖层土壤水平衡的影响。 SHAW 模型倾向于低估杨树的蒸腾量 [每日总量的平均差 (MD) 范围为 0.33 至 3.55 mm]，并高估土壤体积含水量高达 0.10 m3 m-3。该模型很好地估计了土壤温度，特别是垃圾填埋场覆盖层上部 1 m 的土壤温度（该层 MD 范围为 -0.1 至 1.6 ×°C）。 SHAW 模型模拟表明，随着年轻 PTS 的存在，深层排水明显减少，这主要是通过增加对降雨的截留，并且 PTS 具有在北温带气候区充当有效蒸散屏障的良好潜力。
The use of poplar tree systems (PTS) as evapotranspiration barriers on decommissioned landfills is gaining attention as an option for leachate management. This study involved field-testing the Simultaneous Heat and Water (SHAW) model for its ability to reliably estimate poplar transpiration, volumetric soil water content, and soil temperature at a landfill located in southern Ontario, Canada. The model was then used to estimate deep drainage and to ascertain the influence of a young PTS on the soil water balance of the landfill cover. The SHAW model tended to underestimate poplar transpiration [mean difference (MD) ranged from 0.33 to 3.55 mm on a daily total basis] and overestimate volumetric soil water content by up to 0.10 m3 m-3. The model estimated soil temperature very well, particularly in the upper 1 m of the landfill cover (MD ranged from -0.1 to 1.6 ×°C in this layer). The SHAW model simulations showed that deep drainage decreased appreciably with the presence of a young PTS largely through increased interception of rainfall, and that PTS have a good potential to act as effective evapotranspiration barriers in northern temperate climate zones.