Experimental Evaluation of Permeability in Soil Vis-À-Vis Transpiration of Pants with Different Root Types
摘要
Seepage of water in soil caused by the increase in water level inside soil structures after a rainfall event influences the stability of the land. Seepage saturates hill slope soil, weakening it and reducing cohesion, causing soil erosion and triggering landslides. To improve soil stability nature-based solutions adopting plant species have been used in recent times because of their sustainability. Hence, this study evaluates the potential of transpiration in plants with different root types. Experiments were planned where soil moisture was measured along with the depth of soil in the soil columns under wetting and drying cycles in the presence of the process mentioned above. It was shown that penetration of fine roots is more and thus has the greatest ability to absorb moisture. The potential difference of transpiration with different plant roots was studied and their efficiency was discussed. By comparing the transpiration rates, and soil moisture profiles of different plant species, it was observed that root type has a considerable effect on transpiration which will affect the seepage of water in the soil. Also, fibrous roots were found to be more effective due to the presence of fine roots.