植被重建对酸性土壤障碍地区路域土壤肥力的作用研究  

Effect of Vegetation Restoration on Soil Fertility in Road Area with Acid Soil Barrier

作　　者：蒋康 周佳 罗智芳 刘克非[3] JIANG Kang;ZHOU Jia;LUO Zhi-fang;LIU Ke-fei(Hunan Communications Research Institute Co.Ltd.,Changsha 410015,China;Hunan Road&Bridge Construction Group Co.Ltd.,Changsha 410004,China;Central South University of Forestry&Technology,Changsha 410004,China)

机构地区：[1]湖南省交通科学研究院有限公司,长沙市410015 [2]湖南路桥建设集团有限责任公司,长沙市410004 [3]中南林业科技大学,长沙市410004

出　　处：《公路》2021年第10期365-368,共4页Highway

基　　金：湖南省交通运输科技进步与创新计划项目,项目编号201908,201318。

摘　　要：为明确不同类型植被对酸性土壤障碍地区公路工程项目建设后路域土壤肥力的影响,以植被重建后的长湘高速沿线路域土壤为研究对象,采用野外采样与实验室分析相结合的方法,对马尾松、悬铃木、樟树和喜树植被重建后林下土壤的pH值及养分特性进行研究,并运用综合指数法评定了土壤发育综合质量。结果表明:植被类型对土壤pH值的影响差异并不显著,各植被重建后的土壤养分含量均显著提高,马尾松林下土壤的肥力恢复效果最优,因而更适合该区域酸性土壤障碍地区路域植被恢复。4种植被重建后土壤发育综合指标排序为马尾松>樟树>悬铃木>喜树,马尾松改善土壤发育的效果最好。未来可考虑乔木与林下灌草植物相结合共同改善土壤养分,提高路域土壤的肥力和水土保持能力。To clarify the influence of different vegetation types on soil fertility after highway project construction in acid soil barrier area,the soil along the route of Changsha-Xiangtan Expressway after plant reconstruction is taken as the research object.The soil pH value and nutrient characteristics of Pinus massoniana,Sycamore,Camphor and Camptotheca acuminata are studied by field sampling and laboratory analysis,and the comprehensive quality of soil development is evaluated by the comprehensive index method.The results show that vegetation types have no significant difference on the influence of soil pH value,and the soil nutrient content after each vegetation reconstruction is obviously increased.Soil fertility restoration under Pinus massoniana forest is the best,indicating that it is more suitable for vegetation restoration in the road area with acid soil barrier.The comprehensive indexes of soil development after the vegetation restoration are ranked as Pinus massoniana>Camphor>Sycamore>Camptotheca acuminata,and Pinus massoniana has the best effect on improving soil development.In the future,the combination of trees and shrubs plants can be considered to improve soil nutrients together to improve soil fertility and water and soil conservation capability in the road area.

关 键 词：植被重建 酸性土壤 土壤肥力 土壤发育综合评价 

分 类 号：U418.9[交通运输工程—道路与铁道工程]