[目的] 分析西气东输二线工程(西段)水土保持植物的降水、土壤等条件,选择适宜作为管道绿化用草的草种. [方法] 采用观察现场实地监测的办法,研究了扰动后的土壤性质变化、自然降雨及土壤等自然条件对人工植被恢复效果的影响. [结果] 筛选确定了既具备生态适应性,又实用、经济的紫花苜蓿、冰草、芨芨草、草木樨等4个适生优良草种的种植设计、种植方法,监测了其在不同施工区的生长发育状况. [结论] 对管线进行合理植物措施配置,优选适宜作为管道绿化用草的草种可以有效减少水土流失,管护管道安全.
[Objective] The objective of this study is to analyze the precipitation and soil conditions of the plants in the west section of the second west-east natural gas transmission pipeline project, in order to select the suitable grass species for the pipeline soil and water conservation. [Methods] Based on in-situ monitoring, we investigated the influences of soil property change due to disturbance, natural rainfall, soil and other natural conditions on the restoration of artificial vegetation. [Results] Medicago sativa, Agropyron cristatum, Achnatherum splendens and Melilotus suaveolens were selected as the optimal plant species for pipeline soil and water conservation. The growth and development of these four species was monitored in different construction regions. [Conclusion] To select the suitable plant species for soil and water conservation is of great importance for the soil loss control and pipeline security.