摘要
针对银西高铁宁夏段荒漠区路基边坡生态防护工程,基于气象资料和边坡土壤养分监测分析数据,对当地优选的3种绿植生长状态及其土壤肥力进行分析,提出适宜荒漠区高铁路基边坡的生态防护对策.结果表明,银西高铁宁夏段荒漠区近几年整体呈荒漠化加剧的趋势发展,路基边坡土壤表现出盐碱化和缺氮特征.柠条的成活率、植被密度、植物盖度等生长指标均优于其他2种,且栽植后土壤中N,K含量明显改善,具备更强的环境适应性.建议在银西高铁宁夏段荒漠区选择柠条作为路基边坡生态防护的绿植.
Aiming at the technical problems of ecological protection of subgrade slope in desert area of Ningxia section of Yinxi high-speed railway,and basing on the analysis of meteorological data and the monitoring of soil nutrients on the slopes,the article conducted a comparative test to analyse the growth status and soil fertility of local preferred greenery and to propose ecological protection measures suitable for the slopes of the high-speed railway in the desert area.The results of the study show that the Ningxia section of the Yinxi high-speed railway has been developing in a trend of increasing desertification in recent years,and the soil on the roadbed slope shows the characteristics of salinization and nitrogen deficiency.Through the comparative test analysis of three locally preferred trees and shrubs,the growth indicators of Caragana korshinskii,such as survival rate,vegetation density,and plant coverage,are better than the other two,and the soil nitrogen and potassium content after planting has been significantly improved,with stronger environmental adaptability.It recommended to select Caragana korshinskii as the green plant for the ecological protection of the roadbed slope in the Ningxia section of the Yinxi high-speed railway,so as to provide a technical reference for the ecological protection of the roadbed slope in the desert area.
作者
苗学云
刘涛
吴永峰
章洵
米维军
Miao Xueyun;Liu Tao;Wu Yongfeng;Zhang Xun;Mi Weijun(Northwest Research Institute Co., Ltd. of China Railway Engineering Corporation, Lanzhou 730000, China;Yinxi Railway Co., Ltd., Yinchuan 750011, China)
出处
《宁夏大学学报（自然科学版）》
CAS
2022年第2期220-224,共5页
Journal of Ningxia University(Natural Science Edition)
基金
宁夏重点研发计划基金资助项目(2019BFG02013)。
关键词
银西高铁
荒漠区
对比实验
土壤肥力
生态防护
Yinxi high-speed railway
desert area
comparative test
soil fertility
ecological protection
