A Geotechnical Challenge for Combating Dsertification -Application of Self-Watering Greening System in Unsaturated Arid Ground-

通过使用有价值的草本植物甘草(甘草)，开发了可持续和自愿地抑制荒漠化进程的技术。首先，需要对蒙古半荒漠地区周围的地质环境包括天气状况有适当的了解。在实地调查的基础上，摸清了荒漠化地区的真实环境状况。还了解了适合甘草生长的自然条件。在此基础上，根据田间试验结果，提出了半干旱地区土壤水分竞争控制的有效工具之一--自浇水系统，该系统具有可持续利用、环境友好等特点，在不增加额外能量投入的情况下工作。该系统可以吸收和储存一定量的水。通过田间植物生长试验验证了简化系统的有效性，使蒸发量最小。

Development of technique which can restrain the progress of desertification sustainably and voluntary was taken place by using valuable herbal plant licorice (Glycyrrhiza uralensis). Firstly, proper prehension about geo-environment included weather condition around the semi-desert areas in Mongolia is needed. Based on the field investigation, the real environmental situations of desertification area are found out. The natural conditions that suitable for the growth of licorice are also understood. Then, following the findings in the field, the self-watering system has been proposed as one of the effective tools for controlling the water contests of soils in semi-arid ground, which is easy to use sustainably and environmental friendly.This greening system works under the condition of no extra energy input. The system can absorb and store some quantity of water. The simplified system propsosed was verified by the field vegitation tests to minimize the quantity of evaporation.