Department of Environmental Studies, Institute of Science, Visva-Bharati, Santiniketan, 731235, Birbhum, West Bengal, India.
Department of Environmental Studies, Institute of Science, Visva-Bharati, Santiniketan, 731235, Birbhum, West Bengal, India.
Chemosphere. 2019 Dec;237:124522. doi: 10.1016/j.chemosphere.2019.124522. Epub 2019 Aug 5.
The present study was performed on Shorea robusta Gaertn., Acacia auriculiformis Benth., Eucalyptus globulus Labill., Azadirachta indica A. Juss in two tropical forests [including one (Barjora), situated adjacent to heavy pollution sources and the other, as control, Ballavpur Wildlife Sanctuary (BWLS)] of West Bengal, India, to measure the heavy metals accumulation capacity in their leaves and their levels of tolerance in a polluted environment. Site wise and seasonal variations in air pollution tolerance index (APTI) and anticipated performance index (API) were assessed in the aforesaid four plants. Highest APTI value was observed in S. robusta (34.62 ± 1.47) at polluted site during winter. S. robusta anticipated as an excellent performer on the basis of API score in all the three seasons in BWLS. The metal accumulation index (MAI) values ranged from 3.06 to 7.68 and 9.48-9.82; 2.65-4.96 and 4.29-6.08; 3.35-8.14 and 5.04-11.65; 3.59-4.64 and 5.21-7.98 at BWLS and Barjora forest for S. robusta, A. auriculiformis, E. globulus and A. indica respectively. Two-way ANOVA test showed a site and season wise significant difference in the biochemical and physiological parameters between the two forests. The results indicated that air pollution played an important role, which affected the biochemical and physiological parameters of plants in tropical forest located at a polluted site. The species with highest MAI and APTI value could be used in sound green space management for reducing the levels of atmospheric pollution. Higher levels of ascorbic acid content, at polluted site as compared to control site, were an indication of stress condition.
本研究在印度西孟加拉邦的两个热带森林（包括一个靠近重污染源的 Barjora 森林和一个作为对照的 Ballavpur 野生动物保护区（BWLS））中对 Shorea robusta Gaertn.、Acacia auriculiformis Benth.、Eucalyptus globulus Labill.和 Azadirachta indica A. Juss 进行了研究，以测量它们叶片对重金属的积累能力及其在污染环境中的耐受水平。评估了上述四种植物在不同地点和季节的空气污染耐受指数（APTI）和预期表现指数（API）的变化。在污染地区的冬季，S. robusta 的 APTI 值最高（34.62 ± 1.47）。S. robusta 在 BWLS 的所有三个季节的 API 评分中都被预期为表现出色的植物。金属积累指数（MAI）值范围为 3.06 至 7.68 和 9.48-9.82；2.65-4.96 和 4.29-6.08；3.35-8.14 和 5.04-11.65；3.59-4.64 和 5.21-7.98，分别在 BWLS 和 Barjora 森林中，S. robusta、A. auriculiformis、E. globulus 和 A. indica 的金属积累指数。双向方差分析表明，两个森林的生化和生理参数在地点和季节上存在显著差异。结果表明，空气污染起了重要作用，影响了位于污染地区的热带森林中植物的生化和生理参数。具有最高 MAI 和 APTI 值的物种可用于合理的绿色空间管理，以降低大气污染水平。与对照点相比，污染点的抗坏血酸含量较高，表明处于应激状态。
