摘要 本文通过土培试验方法研究不同浓度Cd胁迫对桐花树(Aegicerascorniculatum)幼苗的生长、生理特性及土壤酶活性的影响，从可溶性蛋白、可溶性糖、淀粉、脯氨酸、抗氧化酶系统、MDA等方面对红树植物生理特性的变化进行了系统的研究，进一步探讨了红树植物抗重金属生理生态学适应机制，并探讨了Cd胁迫下湿地土壤酶活性的变化以及Cd在红树幼苗中的迁移规律： 1.盆栽土培条件下，胁迫4个月，低浓度Cd胁迫（0.5mg·kg-1）对桐花树幼苗生长无明显伤害现象，甚至促进生长，表现在幼苗株高、植株鲜重均显著高于对照；随Cd浓度增加至50mg·kg-1，抑制了幼苗正常生长，生物量下降，根长显...Abstract The soil-cultivated Aegiceras corniculatum seedlings were treated with various contents of Cd, and the effects on the physiological properties and the soil enzyme activities were measured. The physiological indexes included dissolved protein, dissolved sugar, starch, proline, anti-oxidation enzymes and MDA. The objectives were to probe into the transferring rule of Cd and the anti-heavy-...学位：理学硕士院系专业：生命科学学院生物学系_植物学学号：X20032600
