Abstract
Air pollution causes decrease life quality ini urban areas. One solution in reducing air pollution is to use vegetation. The roadside Green Line consists of several types of vegetation, one of the trees. The ecological functions of the tree include pollution absorber. Roadside tree have specific physical appearance to determine its function. Roadside trees as living character that grow in polluted areas have different tolerance levels, one way of measuring tolerance based on biochemical parameters is the Air Pollution Tolerance Index (APTI). APTI can be a performance consideration of a tree type in a habitat of growth. The purpose of this research are to evaluating the physical function of roadside tree, to analyzing APTI. Based on the result of the study, the suitable (very suitable and suitable) physical function of roadside tree for absorbing gas air pollution was 62.78% and for adsorbing particle air pollution was 80,5% of total population of tree around Bogor Botanical Garden. Findings revealed that among 10 plant species are intermediate tolerant to air pollution and 11 plant species are sensitive to air pollution.
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