摘要
基于生物多样性与生态系统功能试验,比较了安太堡露天煤矿排土场复垦初期15种配置模式人工植被的存活和生长差异,并采用多元逐步回归法分析了影响人工植被存活的关键因素。结果表明,复垦5 a后,油松纯林、刺槐×油松和油松×沙棘混交林模式的存活率显著高于其他配置模式;4个试验树种的存活率间存在显著差异,其大小表现为油松>刺槐>柠条>沙棘;各树种的径级结构和高度结构主要呈正态分布,不同配置模式各树种的平均胸径(或基径)和平均高度之间差异普遍不显著;配置模式和表层土壤养分含量对75%的树种存活无显著影响。黄土区露天煤矿排土场复垦初期可考虑将油松和刺槐作为植被恢复的优选树种。
Based on the Biodivesity-Ecosystem Functioning(BEF)experimental plot,the survival rates and individual growth of artificial vegetation under 15 reclamation patterns were compared,and the influencing factors of the survival rate of artificial vegetation were analyzed by multiple stepwise regression.The result showed that after five years of reclamation,the survival rate of Pinus tabulaeformis pure forest,Robinia pseudoacacia and Pinus tabulaeformis mixed forest,and Pinus tabulaeformis and Hippophae rhamnoides mixed forest was significantly higher than other reclamation patterns.There were significant differences in the survival rates of the four experimental species,which were characterized by Pinus tabulaeformis>Robinia pseudoacacia>Caragana korshinskii>Hippophae rhamnoides.The structure of size-class and height of each tree species was mainly normal distribution.Reclamation pattern had no significant effect on average DBH(or basal diameter)and average height of trees.Reclamation patterns and soil nutrient content had no significant effect on the survival of 75%of the tree species.Pinus tabulaeformis and Robinia pseudoacacia can be considered as the preferred tree species for vegetation restoration in early stage of reclamation at open-pit coal mine waste dump in loess area.
作者
赵冰清
ZHAO Bingqing(Department of Chemistry and Chemical Engineering,Jinzhong University,Jinzhong 030619,China)
出处
《山西农业科学》
2020年第8期1275-1282,共8页
Journal of Shanxi Agricultural Sciences
基金
晋中学院博士科研启动项目(1000138)
晋中学院“1331工程”创客团队建设计划项目(jzxycktd2019031)。
关键词
露天煤矿
植被恢复
BEF试验
存活率
土壤养分
open-pit coal mine
vegetation restoration
BEF experiment
survival rate
soil nutrient
作者简介
赵冰清(1984-),女,山西大同人,讲师,博士,主要从事矿区生态修复、生物多样性保护方面的研究工作。
