中山大学学报（自然科学版）（中英文）2024，Vol.63Issue(6)：114-121,8.DOI:10.13471/j.cnki.acta.snus.ZR20240158
昼夜增温对外来入侵植物竞争力的影响
Effects of day and night warming on growth and competitive ability of invasive alien plants
摘要
Abstract
There is an obvious diurnal asymmetrical warming around the world.Photosynthesis takes place at daytime,while respiration occurs through day and night.Day and night warming may change the balance between photosynthesis and respiration,consequently influencing plant growth.Invasive alien plants usually have stronger resource capture ability and energy use efficiency relative to native plants.What is the effect of day and night warming on the growth and competitiveness of invasive plants?Thus,two invasive plants Bidens alba(also called Bidens pilosa)and Eupatorium catarium,and a native plant Emilia sonchifolia were selected.The effects of warming on plant growth,biomass allocation and inter-competition of invasive plants and native plants were studied.The results showed that daytime warming significantly increased the total biomass and aboveground biomass of the two invasive plants,while whole day warming significantly increased the total biomass and aboveground biomass of the native plants.The root-shoot ratio of B.alba under whole-day warming was significantly higher than that under other warming treatments,while the root-shoot ratio of the other two plants was the lowest under whole-day warming.Night warming and whole day warming promoted the inhibitory effect of invasive plants on native plants.All three warming treatments reduced the competitive response of the two invasive plants to E.sonchifolia,but the difference between different warming treatments was not significant,indicating that the competitive response of native plants to E.sonchifolia did not show significant competitor dependence.关键词
全球变暖/外来植物/入侵性Key words
global warming/exotic plants/invasiveness分类
农业科技引用本文复制引用
陈宝明..昼夜增温对外来入侵植物竞争力的影响[J].中山大学学报（自然科学版）（中英文）,2024,63(6):114-121,8.基金项目
国家自然科学基金(31670479) （31670479）
广东省林业科技创新项目(2021KJCX014) （2021KJCX014）
