Thirteen species of the lichen genus Ramalina are reported from Northeastern China. Descriptions, comments and illustrations of two species new to China, R. conduplicans and R. yasudea are provided. The earlier report...Thirteen species of the lichen genus Ramalina are reported from Northeastern China. Descriptions, comments and illustrations of two species new to China, R. conduplicans and R. yasudea are provided. The earlier reports of R. fraxinea and R. polymorpha are found to be misidentified, and the correct names of them are R. sinensis and R. sekika respectively.展开更多
大气元素沉降的地衣移植法监测常将地衣样品移植于乔木冠层下,但冠层有无与移植时长对地衣元素组成的影响研究不多。本研究将河北省偏远地区的中国树花(Ramalina sinensis)移植于污染区,基于元素含量增高倍数EC(exposed to control rat...大气元素沉降的地衣移植法监测常将地衣样品移植于乔木冠层下,但冠层有无与移植时长对地衣元素组成的影响研究不多。本研究将河北省偏远地区的中国树花(Ramalina sinensis)移植于污染区,基于元素含量增高倍数EC(exposed to control ratio)评估了55种元素的生物积累程度,检验了冠层(2水平:有冠层或无冠层)和移植时长(3水平:7、8或9个月)对地衣元素含量的影响。结果显示,中国树花的元素背景含量低于已有研究中地衣元素含量的背景值/基线值,有效反映了背景区较低的大气污染程度。中国树花适用于除Co和Hg(二者含量的背景噪声过高)之外的53种元素的大气沉降监测。移植后绝大多数元素含量显著高于背景区,其中交通相关元素Pb和Sb为“极重度积累”,与农业活动和植物生理活性有关的元素(As、K、P、S和Se)以及Ag和Ge为“无积累”或“轻度积累”,其他44种元素(Al、B、Ba、Be、Bi、Ca、Cd、Ce、Cr、Cs、Cu、Dy、Er、Eu、Fe、Gd、Ho、La、Li、Lu、Mg、Mn、Mo、Na、Nb、Nd、Ni、Pr、Rb、Tb、Sc、Si、Sm、Sn、Sr、Th、Ti、Tl、Tm、U、V、Y、Yb和Zn)为“中度积累”,表明移植区大气污染程度较高,交通排放贡献大。冠层和移植时长对中国树花元素含量的影响具有元素特异性:26种元素的含量或因冠层淋溶作用而在冠层下高于无冠层,Pb含量或因冠层截留作用而呈相反格局;移植时长超过7个月后,绝大多数元素(41种)含量不再增加,11种元素含量呈增高趋势,Ni含量呈下降趋势。表明利用地衣移植法进行大气元素沉降监测时,冠层有无需保持一致,且移植时间不可过长。展开更多
Two manglicolous lichen species namely,Graphis ajarekarii Patw.and C.R.Kulk on the twigs of Avicennia officinalis from Nagayalanka lighthouse of Krishna estuary,Andhra Pradesh and Ramalina leiodea(Nyl.)Nyl.on the twig...Two manglicolous lichen species namely,Graphis ajarekarii Patw.and C.R.Kulk on the twigs of Avicennia officinalis from Nagayalanka lighthouse of Krishna estuary,Andhra Pradesh and Ramalina leiodea(Nyl.)Nyl.on the twigs of Ceriops decandra from Bhitarkanika island of Mahanadi estuary,Orissa state are reported.Both the species are new records on the mangroves of Andhra Pradesh and Orissa states of India.展开更多
基金Supported by the National Natural Science Foundation of China （NSFC） （ No. 30470007, 30499340, 30470003）, Special thanks are due to Prof. Hiroyuki Kasiwadani of Department of Botany, National Science Museum, Tokyo for the loan of specimens and for confirming some species. The authors are thankful to Professor J.C. Wei and Miss Hong Deng （HMAS-L） for providing access to specimens housed in HMAS-L.
文摘Thirteen species of the lichen genus Ramalina are reported from Northeastern China. Descriptions, comments and illustrations of two species new to China, R. conduplicans and R. yasudea are provided. The earlier reports of R. fraxinea and R. polymorpha are found to be misidentified, and the correct names of them are R. sinensis and R. sekika respectively.
文摘大气元素沉降的地衣移植法监测常将地衣样品移植于乔木冠层下,但冠层有无与移植时长对地衣元素组成的影响研究不多。本研究将河北省偏远地区的中国树花(Ramalina sinensis)移植于污染区,基于元素含量增高倍数EC(exposed to control ratio)评估了55种元素的生物积累程度,检验了冠层(2水平:有冠层或无冠层)和移植时长(3水平:7、8或9个月)对地衣元素含量的影响。结果显示,中国树花的元素背景含量低于已有研究中地衣元素含量的背景值/基线值,有效反映了背景区较低的大气污染程度。中国树花适用于除Co和Hg(二者含量的背景噪声过高)之外的53种元素的大气沉降监测。移植后绝大多数元素含量显著高于背景区,其中交通相关元素Pb和Sb为“极重度积累”,与农业活动和植物生理活性有关的元素(As、K、P、S和Se)以及Ag和Ge为“无积累”或“轻度积累”,其他44种元素(Al、B、Ba、Be、Bi、Ca、Cd、Ce、Cr、Cs、Cu、Dy、Er、Eu、Fe、Gd、Ho、La、Li、Lu、Mg、Mn、Mo、Na、Nb、Nd、Ni、Pr、Rb、Tb、Sc、Si、Sm、Sn、Sr、Th、Ti、Tl、Tm、U、V、Y、Yb和Zn)为“中度积累”,表明移植区大气污染程度较高,交通排放贡献大。冠层和移植时长对中国树花元素含量的影响具有元素特异性:26种元素的含量或因冠层淋溶作用而在冠层下高于无冠层,Pb含量或因冠层截留作用而呈相反格局;移植时长超过7个月后,绝大多数元素(41种)含量不再增加,11种元素含量呈增高趋势,Ni含量呈下降趋势。表明利用地衣移植法进行大气元素沉降监测时,冠层有无需保持一致,且移植时间不可过长。
文摘Two manglicolous lichen species namely,Graphis ajarekarii Patw.and C.R.Kulk on the twigs of Avicennia officinalis from Nagayalanka lighthouse of Krishna estuary,Andhra Pradesh and Ramalina leiodea(Nyl.)Nyl.on the twigs of Ceriops decandra from Bhitarkanika island of Mahanadi estuary,Orissa state are reported.Both the species are new records on the mangroves of Andhra Pradesh and Orissa states of India.
