喀斯特石山克隆生长红背山麻杆的生理响应及耐受性评价  

Tolerance Evaluation and Physiological Responses of the Clonal Plant Alchornea trewioides in Karst Rocky Mountains

作　　者：张雅君[1] 马姜明[1,2] 苏静[1] 秦佳双 莫燕华 ZHANG Yajun;MA Jiangming;SU Jing;QIN Jiashuang;MO Yanhua(Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection,Ministry of Education, Guilin Guangxi 541006,China;University Key Laboratory of Karst Ecology and Environmental Change of Guangxi Province(Guangxi Normal University),Guilin Guangxi 541004,China)

机构地区：[1]珍稀濒危动植物生态与环境保护教育部重点实验室,广西桂林541006 [2]岩溶生态与环境变化研究广西高校重点实验室(广西师范大学),广西桂林541004

出　　处：《广西师范大学学报（自然科学版）》2018年第4期151-158,共8页Journal of Guangxi Normal University:Natural Science Edition

基　　金：珍稀濒危动植物生态与环境保护教育部重点实验室主任基金(ERESEP2018Z04);国家自然科学基金(31660197)

摘　　要：以喀斯特石山生境条件下克隆生长的红背山麻杆Alchornea trewioides为对象,研究不同干扰方式(火烧干扰、砍伐干扰和无干扰)对红背山麻杆叶绿素含量、丙二醛含量以及渗透调节物质含量等方面的影响,结果表明:不同干扰方式下,砍伐干扰的红背山麻杆叶绿素含量最高,无干扰的细胞膜受伤害程度相对较大,而火烧干扰的渗透调节能力最好。利用隶属函数法对测定的5个生理指标进行耐受性综合评价,发现受火烧干扰的红背山麻杆耐受性最强,受砍伐干扰的次之,无干扰的耐受性最弱,适度干扰有助于红背山麻杆的生长。Compared with the undisturbed treatment,the effects of human disturbance(burning disturbance and cutting disturbance)on the physiological indices of the clonal plant Alchornea trewioides naturally growing in karst rocky mountains were investigated.Measurements included contents of chlorophyll,malonaldehyde(MDA)and osmoregulation substance in the plant leaves.The results indicated that among the three disturbance treatments,the highest chlorophyll content was found in the cutting disturbance treatment,the cell membrane has a relatively high degree of damage in the undisturbed treatment,and the best osmoregulation ability was found in the burning disturbance treatment.According to a comprehensive evaluation based on subordinate function of fuzzy mathematics,A.trewioides with burning disturbance had the best tolerance among the three disturbances,with a lower tolerance in cutting disturbance,and the lowest tolerance in undisturbed,so intermediate disturbance was beneficial to the propagation of A.trewioides.

关 键 词：喀斯特石山 干扰 生理指标 耐受性评价 

分 类 号：Q945.79[生物学—植物学]