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OALib Journal期刊

ISSN: 2333-9721

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CONTRASTING ARBOREAL AND TERRESTRIAL BRYOPHYTES COMMUNITIES OF THE MOUNT HALIMUN SALAK NATIONAL PARK, WEST JAVA
NUNIK S. ARIYANTI,SULISTIJORINI
BIOTROPIA : the Southeast Asian Journal of Tropical Biology , 2011,
Abstract: Bryophyte communities were compared between arboreal (trunk bases) and terrestrialhabitats in primary forest Mount Halimun Salak National Park, West Java. The communitieswere analyzed based on species diversity, abundance, and biomass. A total of 150 bryophytesspecies were identified, including 67 species of mosses (Bryopsida) and 83 of liverworts(Hepaticopsida). Both bryophyte groups varied in diversity and abundance between arborealand terrestrial communities as well as among different elevations. Species diversity of arborealhabitats (116 species) was higher than that of terrestrial habitats (64 species). Moss species weremore abundant in terms of coverage in terrestrial habitats whereas liverworts species weremore abundant in arboreal habitats. Species richness in both terrestrial and arboreal habitatsdecreased towards higher elevation, whereas the abundance increased.
Tolerance Levels of Roadside Trees to Air Pollutants Based on Relative Growth Rate and Air Pollution Tolerance Index
SULISTIJORINI,ZAINAL ALIM MAS’UD,NIZAR NASRULLAH,AHMAD BEY
HAYATI Journal of Biosciences , 2008,
Abstract: Motor vehicles release carbon monoxide, nitrogen dioxide, sulphur dioxide, and particulate matters to the air as pollutants. Vegetation can absorb these pollutants through gas exchange processes. The objective of this study was to examine the combination of the relative growth rate (RGR) and physiological responses in determining tolerance levels of plant species to air pollutants. Physiological responses were calculated as air pollution tolerance index (APTI). Eight roadside tree species were placed at polluted (Jagorawi highway) and unpolluted (Sindangbarang field) area. Growth and physiological parameters of the trees were recorded, including plant height, leaf area, total ascorbate, total chlorophyll, leaf-extract pH, and relative water content. Scoring criteria for the combination of RGR and APTI method was given based on means of the two areas based on two-sample t test. Based on the total score of RGR and APTI, Lagerstroemia speciosa was categorized as a tolerant species; and Pterocarpus indicus, Delonix regia, Swietenia macrophylla were categorized as moderately tolerant species. Gmelina arborea, Cinnamomum burmanii, and Mimusops elengi were categorized as intermediate tolerant species. Lagerstroemia speciosa could be potentially used as roadside tree. The combination of RGR and APTI value was better to determinate tolerance level of plant to air pollutant than merely APTI method.
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