森林工程2025，Vol.41Issue(6)：1251-1267,17.DOI:10.7525/j.issn.1006-8023.2025.06.015
重金属胁迫下6种植物展叶过程对环境积温的响应
Response of Leaf Expansion Process of Six Plants to Environmental Accumulated Temperature under Heavy Metal Stress
摘要
Abstract
In order to study the relationship between the growth and development of native plants and the accumulated temperature of the environment under the compound heavy metals stress,a pot experiment was conducted to analyze the response of the leaf expansion process of six plants to the active accumulated temperature(AAT)and daily temperature difference accumulated temperature(DAT)under the stress of seven mixed heavy metals by setting three concentration gradients.A Logistic growth curve with accumulated temperature as the independent variable was established.The re-sults showed that the leaf area constants of six plants under different concentrations of heavy metals stress were signifi-cantly different from those of the control group.There were significant differences between the leaf area growth of the six plants in the control group and the leaf area growth of the plants under different concentrations of heavy metal stress.The relative leaf area of the six plants in the control group,AAT and DAT were in accordance with the Logistic growth curve,but the overall fitting degree(R2)of theese model in the heavy metals stress groups was poor and the prediction accuracy was low.In particular,the R2 of the relative leaf area-AAT fitting model of the low concentration treatment was only 0.265 4 for Ficus tikoua,indicating that the heavy metal stress significantly interfered with the normal growth process of the plant.The leaf area-accumulated temperature Logistic growth model can better reflect the growth difference of leaf area under environmental stress during the leaf expansion period of plants.The research results can provide scientific ref-erence for the screening and cultivation of ecological restoration seedlings in mining areas.关键词
重金属/相对叶面积/有效积温/日温差/生长曲线Key words
Heavy metal/relative leaf area/active accumulated temperature/daily temperature difference/growth curve分类
林学引用本文复制引用
周华,姜霞,杨永艳,党毅,刘娜,杨光能..重金属胁迫下6种植物展叶过程对环境积温的响应[J].森林工程,2025,41(6):1251-1267,17.基金项目
贵州省科技支撑项目(黔科合支撑[2021]一般457) （黔科合支撑[2021]一般457）
贵州省科技计划项目(黔科合服企[2023]009). （黔科合服企[2023]009）
