文献类型：期刊文献

中文题名：铅锌矿砂环境下5种栎树叶片颜色变化与植被恢复前景

英文题名：Changes in leaf color and vegetation restoration prospects of five Quercus species in Pb/Zn mine tailings

作者：施翔[1] 汪阳东[1] 何文祥[1] 俞文仙[2] 黄世清[3] 张永志[3] 唐育林[4]

第一作者：施翔

机构：[1]中国林业科学研究院亚热带林业研究所,浙江省林木育种技术研究重点实验室,杭州311400;[2]杭州市富阳区农业农村局,杭州311400;[3]安吉县龙山林场,湖州313306;[4]江苏通源建设工程有限公司,盐城224200

年份：2023

卷号：29

期号：4

起止页码：961-969

中文期刊名：应用与环境生物学报

外文期刊名：Chinese Journal of Applied and Environmental Biology

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2023_2024】；

基金：中央级公益性科研院所基金重点项目(CAFYBB2018ZB001-3,CAFYBB2019SZ001)资助

语种：中文

中文关键词：栎树;铅锌矿砂;叶色;元素;植物修复

外文关键词：Quercus spp.;Pb/Zn mine tailing;leaf color;element;phytoremediation

分类号：X173;S792.18

摘要：通过盆栽试验评价栎属植物在铅锌尾矿环境下叶片颜色变化及植被恢复前景.以白栎(Quercus fabri)、弗吉尼亚栎(Quercu virginiana)、牛栎(Quercu michauxii)、樱皮栎(Quercus pagoda)和柳叶栎(Quercus phellos)为研究对象,分析比较5种栎树幼苗在红壤和铅锌矿砂中生长4个月后的生物量、色差参数(L^(*)、a^(*)、b^(*))、叶绿素含量指数CCI值、色素、营养及重金属元素含量.结果表明,5种栎树没有表现出显著的毒害效应而死亡,证实其在铅锌尾矿中具有较强的适应能力.各栎树生物量均较对照有不同程度下降,其中牛栎表现较好.叶片CCI值随胁迫时间延长而逐渐下降,且处理组CCI值下降速率显著高于对照组,其中樱皮栎CCI值下降幅度高于其他树种.总体而言处理组叶片叶色参数L^(*)、a^(*)、b^(*)值和花青素含量较对照增加,而叶绿素和类胡萝卜素含量则较对照下降;叶片变色时间较对照早且不同树种叶色差异显著.叶片N、P和K浓度同样较对照显著降低.5种栎树体内重金属浓度分别为5.42-49.50 mg/kg(Cu)、52.67-483.33 mg/kg(Zn)、5.96-117.00 mg/kg(Pb)和0.26-10.03 mg/kg(Cd),生物富集系数和转移系数均小于1,但樱皮栎叶片、茎和根系Cd浓度分别为10.03、9.66和9.08 mg/kg,显著高于其他树种,且其TF值为1.08.相关分析表明色差参数与叶片重金属浓度呈正相关,特别是a^(*)值与Cu和Cd浓度呈显著正相关(P<0.05);a^(*)值与N、P和K浓度呈显著负相关(P<0.05).本研究表明参试栎树耐性较高、重金属生物富集系数和转移系数较低,并具有较好的景观效果,是重污染尾矿区植被恢复的潜力树种.(图8表1参53)
A pot experiment was conducted to evaluate the changes in leaf color and the vegetation restoration potential of Quercus spp.in Pb/Zn tailings.Seedlings of Quercus fabri,Q.virginiana,Q.michauxii,Q.pagoda,and Q.phellos were grown in red soil and Pb/Zn mine tailings for 4 months,and their biomasses;chromatic aberration parameters(L^(*),a^(*),and b^(*));chlorophyll content indices(CCIs);pigments;and N,P,K,and heavy metal concentrations were compared.The results showed that all the seedlings could survive on the Pb/Zn tailings,and no notable toxicity symptoms were observed,indicating that the five Quercus species had strong adaptability to Pb/Zn tailings.The biomass decreased to different degrees in all tested species compared to the control and notably,Q.michauxii p erformed well.T he C CI value of t he l eaves d ecreased g radually w ith growth time,and the rate of decline in the CCI value in the seedlings grown in Pb/Zn tailings was significantly higher than that in the red soil.Quercus pagoda exhibited the highest rate of decline in the CCI.Overall,the values of L^(*),a^(*),b^(*),and anthocyanin content of leaves in the treatment group increased compared to the control,whereas chlorophyll and carotenoid content decreased.Concurrently,leaf discoloration of Quercus spp.in the Pb/Zn tailings occurred earlier than that of the control.Overall,leaf color differed notably among the different trees.The concentrations of N,P,and K in the leaves were significantly lower in the Pb/Zn tailings than those in the control.The concentrations of heavy metals in the different organs of Quercus spp.were 5.42–49.50(Cu),52.67–483.33(Zn),5.96–117.00(Pb),and 0.26–10.03 mg/kg(Cd),and the values of bioconcentration factor(BCF)and translocation factor(TF)were<1.The Cd concentrations in the leaves,stems,and roots of Q.pagoda were 10.03,9.66,and 9.08 mg/kg,respectively,which were significantly higher than those of the other species,and the TF value was 1.08.Correlation analysis showed that the aberration parameters were positively correlated with the leaf heavy metals concentrations,especially the a^(*)value was significantly positively correlated with Cu and Cd concentrations.Further,the a^(*)value was significantly negatively correlated with N,P,and K concentrations.These results demonstrate that Quercus spp.have high tolerance and good landscape effects with low BCF and TF,implying that they are potential candidates for vegetation restoration in Pb/Zn tailing areas.