Uijily Maria Elizabath, Kumaraguru A K
Department of Botany, St. Mary's College, Tuticorin 628001, India.
J Environ Sci Eng. 2004 Jul;46(3):186-93.
Lichens are lower group of plants. They accumulate heavy metals and have been used as bio-indicators in pollution monitoring. Nine lichen species were collected from urban, rural and hilly areas in the southern part of Tamilnadu. Accumulation of metals differed with species and also with respect to their locations. Among the nine species, Pyxine petricola collected from urban areas showed greater accumulation of the heavy metals i.e., copper, zinc, lead, nickel, chromium and cadmium.
地衣是低等植物类群。它们会积累重金属，并已被用作污染监测中的生物指示物。从泰米尔纳德邦南部的城市、农村和山区采集了9种地衣物种。金属的积累因物种不同以及其所处位置而异。在这9个物种中，从城市地区采集的石果扁枝衣显示出对重金属（即铜、锌、铅、镍、铬和镉）的更大积累。
