两种乡土植物用于重庆市采石场废弃地修复的适应性研究

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关键词：黄荆；马桑；采石场废弃地；自然修复；干旱胁迫；土壤厚度中图分类号：X171.4 文献标识码：A 文章编号：1008-9500（2025）10-0012-04DOI： 10.3969/j.issn.1008-9500.2025.10.004

Abstract： Takingthenatural restorationof abandonedquarries in Chongqing cityas thegoal，native plants Vitex negundo and Coriarianepalensis are selected as the research objects，through potcontrol experiments，their adaptabilityunder diferentsoillayerthicknessesanddroughtstressis explored.Theresultsshow that the germination indicators of the two plantsare notsignificantlyafectedbydroughtandsoillayerthicknes; undershort-termdroughtstress，theaboveground growthofVitex negundo sedlings isnotinhibited，butlong-term drought stress significantlyreducestheir elongationand promotes the accumulation of underground biomass;the growth of Coriaria nepalensis seedlings continues to decrease withtheintensificationof drought，buttheroot shootratio significantly increases;thephotosynthetic eficiencyof both plants decreases with prolonged stresstime，but thedecrease issmalerinthedeepsoil group.Overallboth Vitex negundo and Coriaria nepalensis have strong droughtresistanceandadaptabilitytopoorsoilconditions，makingthemsuitable for ecologicalrestorationofabandonedquarries inChongqingcity，however，itisnecessarytooptimizeplantingstrategiesbased on specific habitat conditions.

KeyWords： Vitexegundo; Coriarianepalensis;abandondquarryland;naturalrestoration;droughtstresssoilthicke

重庆市地形以山地和丘陵为主，受城市建设、基础设施开发等需求驱动，采石活动频繁，产生大量采石场废弃地。（剩余4009字）