沈阳农业大学学报2023，Vol.54Issue(6)：683-692,10.DOI:10.3969/j.issn.1000-1700.2023.06.005
基于层次分析法弃渣场修复的禾本科植物配置
Grass Configuration Based on Analytic Hierarchy Method for Residue Field Remediation
摘要
Abstract
Tunnel spoil soil has weak water holding capacity and lack of nutrients.It is not easily dispersed by surrounding native plants in natural environment,and vegetation is difficult to grow naturally,which is easy to cause soil erosion and secondary geological disasters,and manual intervention is urgently needed to repair it.At present,there are few studies on the restoration allocation ratio of multiple gramineous plants mixed in the waste soil in high altitude areas.Therefore,this study used the waste soil produced from the construction of the Duoxongla tunnel on the Sichuan-Tibet Line to treat three gramineous plants by different seeding methods,and measured and analyzed the plant growth characteristics and soil physical and chemical properties after germination.Based on the test results,AHP was used to analyze the rationality of this planting collocation,and three levels of target layer,criterion layer and index layer were established.The target layer was the evaluation of plant mixed planting configuration,the criterion layer selected plant growth,soil nutrient elements,soil physical and chemical properties,and 3 level Ⅱ indexes.In the index layer,11 level Ⅲ indexes such as aboveground biomass,root length and TOC were refined to establish the optimal allocation model,and the regression equation was used to verify the optimal allocation model.The results showed that H6(tall fesgrass:ryegrass:lamegrass,seed mass ratio 6:3:1,seeding 20 g·m-2)and H625(tall fesgrass:ryegrass:lamegrass,seed mass ratio 6:3:1,seeding 25 g·m-2)showed outstanding performance,and the seeding arrangement was close to the best arrangement of the three grasses in the tunnel waste soil.Based on the analytic hierarchy process,the restoration effect is H6,which tends to be the optimal ratio and has the best restoration effect.By using regression equation analysis,the index system of some factors affecting the allocation of mixed-species established plants was constructed to predict the optimal planting ratio,and the results obtained were in agreement with the results of the optimal treatment mix ratio in this experiment.Therefore,through this experiment,it has been proved that plants can grow in the waste soil where elements are scarce.Under the mixed treatment,the improvement effect of plants on the waste soil is better,but the appropriate mixed planting ratio should be selected for planting.关键词
弃渣场/禾本科植物/植被恢复/植被配置/层次分析法Key words
spoil soil/grass/vegetation restoration/vegetation configuration/analytic hierarchy分类
资源环境引用本文复制引用
罗正宇,韩洪瑞,王思睿,刘镌垚,胡芸菲,陶俣潼,石立豪..基于层次分析法弃渣场修复的禾本科植物配置[J].沈阳农业大学学报,2023,54(6):683-692,10.基金项目
国家环境保护水土污染协同控制与联合修复重点实验室开放基金项目(GHBK-2020-016) （GHBK-2020-016）
