Tolerance Levels of Roadside Trees to Air Pollutants Based on Relative Growth Rate and Air Pollution Tolerance Index

Bamniya

2013

Environ Monit Assess

Plants can be used as both passive biomonitors and biomitigators in urban and industrial environments to indicate the environmental quality and to ameliorate pollution level in a locality. Many studies reveal that plants are negatively affected by the ambient levels of air pollutants. The present study was conducted to evaluate the impact of air pollution on comparative basis with reference to changes in photosynthetic pigments, plant height, leaves, as well as, biochemical parameters of plants of different sites around Udaipur city receiving varying levels of pollution load. The investigated tree species Dalbergia sissoo Roxb. (Family: Fabaceae) exhibited a reduction in various physiological and biochemical growth parameters that correspond with air pollution levels at different sites. The tree species growing in polluted and control areas were compared with respect to foliar dust load, leaf area, and chlorophyll and total carbohydrate and total protein concentration in the leaves. Our studies suggest that D. sissoo Roxb. can successfully be grown in an area for monitoring air pollution, where it is mild and droughts are common. It will prove as an ideal tree species to control pollution effectively beside acting as a shade tree and being a source of food for birds and animals. By plantation of D. sissoo Roxb., mitigative measure at the polluted sites to control generation of particulate matter and the air quality required can be ensured. Our results also confirm that industrial and vehicular air pollution level in Udaipur city is shifting beyond limits.

Section: Discussionmentioning

confidence: 99%

Efficient control of air pollution through plants, a cost-effective alternative: studies on Dalbergia sissoo Roxb

Bamniya

2013

Environ Monit Assess

WIT Transactions on Ecology and the Environment

“…In this paper, we assessed the tolerance of tree, so data about herbs and minor shrubs were excluded from our comparisons. Most of the data was from India [6]- [8], [10], [14]- [21], and from a few other Asian and African countries, such as Iran [12], China [11], [22], Indonesia [23] and Nigeria [24]. The selected studies are listed in Table 1 along with a short description of each study area.…”

Section: Data Collection Of Earlier Studiesmentioning

confidence: 99%

Pollution Assessment in Urban Areas Using Air Pollution Tolerance Index of Tree Species

Molnár

Tóthmérész²,

Szabó

et al. 2018

Air pollution has a large impact on the biochemical and morphological parameters of plants, and also decreases their growth and overall health. Therefore, biomonitoring is a reliable and cost-effective method to assess air quality. The tolerance of plant species can be assessed with the use of Air Pollution Tolerance Index (APTI), which is calculated from ascorbic acid content, relative water content, leaf extract pH, and total leaf chlorophyll content of tree leaves. In this study, we reviewed published studies from several countries around the world about APTI. Performance of APTI was also evaluated comparing industrial, roadside and urban areas. In our work, APTI of Tilia sp. and Celtis occidentalis were used and evaluated in Debrecen city, Hungary. Leaf samples were collected from 12 areas in the city. Similar to earlier studies, ascorbic acid content was determined by titration with iodine solution. Chlorophyll was extracted from leaf samples with ethanol, and it was measured using spectrophotometric analysis. Relative water content was measured by the weight method. Comparison of selected studies showed that China and India are the most polluted countries and they had plant species with the highest APTI values. Lowest APTI was reported from Iran which is one of most airpolluted regions in the world. In Hungary, APTI was moderate compared to other countries. The tolerance of plant species at different study sites decreased in the following order: industrial > roadside > urban areas. This suggests the best conditions for sensitive species' development and growth in urban areas, while the presence of industrial activities in certain areas demands higher tolerance from plants.

“…b. Comparison of plants tolerance level by RGR (Sulistijorini et al, 2008) and APTI (Singh et al,1991).…”

Section: Processing and Data Analysismentioning

confidence: 99%

“…Plants tolerance macroscopically done by observing the total increasing of leaf area (Sulistijorini et al, 2008). Relative Growth Rate (RGR) was calculated by the increasing of leaf area of each tree species with the formula:…”

Section: Processing and Data Analysismentioning

confidence: 99%

See 1 more Smart Citation

Developing Plant Tolerance Indicator to Air Pollution, Case Study in Krakatau Industrial Estate Cilegon City, Indonesia

Dwiputri

Nasrullah

Mas’ud

2018

JLI

Plant tolerance against air pollutants from industrial estate can be assessed based on the change of physiological parameters calculated according to APTI (Air Pollution Tolerance Index by Singh). However, based on previous research, APTI formulation was less accurate, the results obtained between macroscopic and physiological observations are not always sync. Additional physiological parameters, i.e. total carbohydrates as main product of photosynthesis process was need to be examined. Therefore, purpose of this study were to examine the physiological parameters that indicate the level of tolerance of plants sensitivity to air pollution and to analyze the level of tolerance of tree species to air pollution in industrial estate. The method used in this research were survey method, along with macroscopic parameters (leaf area, leaf number, and leaf hue), microscopic parameters (stomatal density, leaf and palisade thickness) and physiological parameters (ascorbic acid content, total chlorophyll, leaf pH, water content, and total carbohydrate) observation of tree species which exposed to pollution and non-pollution (control). The results of this research showed that total carbohydrate as an additional parameter affected the level of tolerance by 49.2% and thus modified the APTI formulation and changed the classification range of plants tolerance. Results showed that the tolerant plants were Polyalthia longifolia Sonn., Polyalthia fragrans (Dalzell) Hook. f. & Thomson, Erythrina crista-galli L., and Casuarina junghuhniana Miq.; moderate tolerance were Hibiscus tiliaceus L., Samanea saman (Jacq.)Merr. and Acacia auriculiformis A. Cunn. ex Benth; and intolerant were Leucaena leucocephala (Lam.) de Wit, Pterocarpus indicus Wild., and Swietenia mahagoni L.