摘要
为修复云南省西北部裸露岩质边坡的生态环境,研发了集多功能于一体的生态修复基材。该生态基材分为结构层和面层,以陶粒、复合肥、保水剂等为原材料,分别设计结构层正交试验和面层正交试验,选取发芽率和生长高度作为定量评价植物生长情况的指标。根据设计的各试验组配比和观测结果,建立模糊综合评价模型和多项式回归模型,求出其在给定条件下的最优配比,并分析各影响因素间的关系。结果表明:基材结构层最优配比为谷壳750 g/m^(2)、复合肥20 g/m^(2)、EPS颗粒40 g/m^(2)、陶粒1.88 kg/m^(2)、团粒剂34.65 g/m^(2)、保水剂84.6 g/m^(2);基材面层最优配比为复合肥9.24 g/m^(2)、保水剂9.12 g/m^(2)、团粒剂13.51 g/m^(2)。基材各组分存在交互作用,而土壤的理化性质与护坡植物生长存在一定的相关性。研究结果可为高寒地区高陡岩质边坡生态基材的制备与生态修复提供理论依据和技术支持。
In order to restore the ecological environment of bare rock slopes in northwest Yunnan Province,an ecological growing substrate which integrates multiple functions was developed.The growing substrate was composed of a structural layer and a surface layer,which contains ceramic particles,compound fertilizer,water retention agent and other materials.For the two layers,we designed orthogonal tests respectively,and selected germination rate and height as quantitative evaluation indicators for plant growth.According to the material ratio of each experimental group and observation results,a fuzzy comprehensive evaluation model and a polynomial regression model were established to find the optimal composition under the given conditions,and the relationships between the influencing factors were analyzed.The results showed that the optimal formulation of the structural layer of substrate were 750 g/m^(2)of chaff,20 g/m^(2)of compound fertilizer,40 g/m^(2)of EPS granules,1.88 kg/m^(2)of ceramic granules,34.65 g/m^(2)of agglomerate and 84.6 g/m^(2)of water retention agent,while the optimal formulation of the surface layer were 9.24 g/m^(2)of compound fertilizer,9.12 g/m^(2)of water retention agent and 13.51 g/m^(2)of agglomerate.There was an interaction between the components of the substrate.There was a certain correlation between physical and chemical properties of the soil and the growth of the slope protection plants.The results can provide a theoretical basis and technical support for the further research and preparation of the growing substrate and revegetation of high and steep rock slopes of alpine areas.
作者
杨继清
陈晓雪
杨继华
李凤
刘芳赫
YANG Jiqing;CHEN Xiaoxue;YANG Jihua;LI Feng;LIU Fanghe(College of Architecture and Engineering,Yunnan Agricultural University,Kunming 650201,China;Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co.,Ltd.,Kunming 650051,China;International College,Yunnan Agricultural University,Kunming 650201,China)
出处
《人民长江》
北大核心
2024年第3期218-225,共8页
Yangtze River
基金
2022年国家级大学生创新创业训练计划项目“碳中和背景下的岩石边坡生态修复技术研究”(202210676009)
校企合作项目(云南农业大学与中铝国际工程股份有限公司)“高寒山区高陡边坡植被恢复关键技术研究”(20200618)
云南省水利厅科技项目“工程扰动亚高山草甸植被恢复关键技术模式研究”(2023BG204001-04)。
关键词
岩质边坡
生态修复
基材
正交试验
多项式回归
rock slope
ecological restoration
substrate
orthogonal test
polynomial regression
作者简介
杨继清,男,副教授,博士研究生,主要从事土木建筑及生态岩土工程方面的研究。E-mail:yjq.98@163.com;通信作者:杨继华,男,高级工程师,主要从事生态岩土工程方面的研究。E-mail:344702696@qq.com。
