Potential of thermal imaging in soil bioengineering to assess plant ability for soil water removal and air cooling
Potential of thermal imaging in soil bioengineering to assess plant ability for soil water removal and air cooling
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DOI：
10.1016/j.ecoleng.2019.105599
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发表时间：
2019-12
影响因子：
3.8
通讯作者：
D. Boldrin;A. Leung;A. Bengough;H. Jones
中科院分区：
文献类型：
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作者：
D. Boldrin;A. Leung;A. Bengough;H. Jones
土壤生物工程利用活的植被来提高基础设施边坡的生态价值和工程性能。植被可以稳定斜坡，并提供空气降温等共同效益，潜在地缓解城市热岛效应。这项研究是首次尝试应用热成像技术在土壤生物工程的背景下同时评估植物通过蒸腾(水文强化)和冷却诱导吸力的能力。通过温室中试试验，评价了热成像技术在测定平菇和冬青植物蒸腾作用中的应用。在长20 m的植被路堤上也进行了现场热成像，测量了土壤基质吸力。此外，TOC。Avellanaandi.此外，还选择了水生植物欧洲黑麦草进行田间试验，其中欧洲黑麦草的降温效果最好，气孔导度指数最大，诱导的土壤吸力最大。热成像可以作为一种有用的初步工具来评估不同植物物种的降温和除水效果。虽然热成像在一次遥测多个植物个体的蒸腾作用方面具有很大的潜力，但植物表面温度受到环境因素和地上植物特性的影响，在该技术能够广泛应用之前，需要进行进一步的研究。
Soil bioengineering uses living vegetation to improve the ecological value and engineering performance of infrastructure slopes. Vegetation can stabilise slopes and provide co-benefits such as air cooling for potential mitigation of the urban heat island effect. This study represents the first attempt to apply the thermal imaging technique to simultaneously evaluate the abilities of plants to induce suction via transpiration (hydrological reinforcement) and cooling in the context of soil bioengineering. A pilot glasshouse experiment was performed to evaluate the use of thermal imaging to determine plant transpiration ofCorylus avellanaandIlex aquifolium. Field thermal imaging was also carried out on a 20 m-long vegetated embankment where soil matric suction was measured. In addition toC. avellanaandI. aquifolium,Ulex europaeuswas also selected for testing in the field.U. europaeushad the greatest cooling effect, largest value of the index of stomatal conductance and the largest induced soil suction. Thermal imaging can be a useful preliminary tool to evaluate the cooling and water removal effects induced by different plant species. Whilst thermal imaging has a great potential to remotely estimate the transpiration of multiple individual plants at one time, plant surface temperature was subject to variabilities of environmental factors and above-ground plant properties that require further investigation before the technique can be widely applied.