Jyothi S Jissy, Jaya D S
Department of Environmental Sciences, University of Kerala, Kariavattom P.O., Thiruvananthapuram 695 581, India.
J Environ Biol. 2010 May;31(3):379-86.
To develop the usefulness of plants as bioindicators requires an appropriate selection of plant species which entail an utmost importance for a particular situation. In the present study a periodic evaluation of air pollution tolerance index [APTI] of selected tree species such as Polyalthia longifolia, (Sonner) Thw., Alstonia scholaris, R. Br., Mangifera indica, L., and shrubs Clerodendron infortunatum, L., Eupatorium odoratum, L., and Hyptis suaveolens, (L.) Poit., growing adjacent to the National Highway-47 passing through Thiruvananthapuram District which lies on the south-west coast of India, was carried out with a view to find out the air pollution tolerance as well as sensitivity of the plant species during different seasons. Among the trees in the roadside areas studied, Polyalthia longifolia, (Sonner) Thw., expressed highest APTI values and proved to be a tolerant variety and the others as sensitive species to air pollutants. In the case of shrubs, Clerodendron infortunatum, L., exhibited highest APTI values (7.34) and found to be more tolerant compared to the other two shrub species studied.
要将植物用作生物指示物，需要适当选择植物物种，这对于特定情况至关重要。在本研究中，对印度西南海岸特里凡得琅区一条穿过国道47沿线生长的某些树种（如长叶暗罗（Polyalthia longifolia, (Sonner) Thw.）、印度萝芙木（Alstonia scholaris, R. Br.）、芒果（Mangifera indica, L.））以及灌木（如臭牡丹（Clerodendron infortunatum, L.）、飞机草（Eupatorium odoratum, L.）、香彩雀（Hyptis suaveolens, (L.) Poit.））的空气污染耐受指数[APTI]进行了定期评估，目的是了解这些植物物种在不同季节的空气污染耐受性以及敏感性。在所研究的路边区域的树木中，长叶暗罗（Polyalthia longifolia, (Sonner) Thw.）表现出最高的APTI值，被证明是耐受品种，而其他树种对空气污染物敏感。在灌木中，臭牡丹（Clerodendron infortunatum, L.）表现出最高的APTI值（7.34），并且与所研究的其他两种灌木相比，其耐受性更强。
