水土保持研究2024，Vol.31Issue(5)：45-52,63,9.DOI:10.13869/j.cnki.rswc.2024.05.023
喀斯特区土石工程堆积体坡面植被恢复评价
Assessment on Vegetation Restoration on the Slope Surface of Accumulation Body of Earth-rock Mixing Engineering in Karst area
摘要
Abstract
[Objective]The aims of this study are to evaluate the vegetation restoration on the slope of the accumulation body of earth-rock mixing engineering in karst area,and to provide basic theoretical support for ecological restoration of accumulation in karst area and provide reference for ecological civilization construction.[Methods]The highway linear accumulation bodies of earth-rock mixing engineering were selected as the research object with different recovery years(3,5,7 a).Different vegetation types(grassland and grass irrigation)were selected as the research objects.The gravel content,soil physical parameters,soil chemical indicators,hydraulics parameters and plant community indexes were selected.The interaction between the vegetation restoration characteristics and the ecological influence factors was analyzed by using principal component analysis.[Results](1)The process of vegetation restoration of the slope of the accumulation body of earth-rock mixing engineering was a process of continuous redistribution of resources and space.With the increase of recovery time,the species richness of the slope vegetation gradually decreased,and the dominant species of the community became more and more obvious.(2)Soil organic matter,natural moisture content and saturated water conductivity were the main factors affecting the initial stage of vegetation restoration on the slope surface of the accumulation body of earth-rock mixing engineering,but the vegetation restoration also helped to improve the slope soil structure and nutrient content.(3)The early focus of vegetation restoration on the slope surface was how to improve the hydrodynamics characteristics of slope soil.The vegetation recovery mode of the construction stage of the pioneer vegetation community of the accumulation body of earth-rock mixing engineering could be mixed,and trees should be added gradually,and some deep root plants should be matched appropriately together.[Conclusion]Improving the slope soil hydrodynamics characteristics is conducive to the initial vegetation recovery on the slope surface of the accumulation body of earth-rock mixing engineering in karst area.Meanwhile,the vegetation restoration mode can be adopted by mixing of grass and shrub,and then gradually with deep-rooted trees.The results can provide basic theoretical support for the ecological restoration of accumulation body of engineering in karst area.关键词
喀斯特区/土石工程堆积体/植被恢复效应/生态修复Key words
karst area/accumulation body of earth-rock mixing engineering/vegetation restoration effect/ecological restoration分类
资源环境引用本文复制引用
高儒学,戴全厚,伍小涛,魏志龙,雷德雨..喀斯特区土石工程堆积体坡面植被恢复评价[J].水土保持研究,2024,31(5):45-52,63,9.基金项目
贵州省2023年度哲学社会科学规划青年课题(23GZQN40) （23GZQN40）
2023年度贵州省党校(行政学院、讲师团)系统课题(2023SWDXKTQN03) （行政学院、讲师团）
国家自然科学基金项目(42167044) （42167044）
