科研之友
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摘要
Precipitation mediated aerial deposition of some biologically important nutrients across the upper basin of Bhoj wetland, having an open surface water area of around 36 km(2), has been assessed during monsoon months of two consecutive years of the study period. Monsoon season of the first phase (July to August, 2006) of study documented relatively the maximum precipitation across the wetland with values ranging from 311.2 to 903.9 Lm(-2) in July and August, respectively. On the other hand precipitation across the wetland during the monsoon season of second phase (July to August, 2007) of study varied from 206.6 to 415.8 Lm(-2) with relatively minimum and maximum values obtained in August and July, respectively. The rain water remained alkaline throughout the study period. Calcium carbonate documented the maximum monsoon precipitation mediated atmospheric deposition of 2.82 x 10(3) to 6.76 x 10(3) g (first phase of study) and 1.93 x 10(3) to 3.06 x 10(3) g (second phase of study) across one square meter surface water area of wetland. Among ionic particulate substances calcium documented relatively maximum wet deposition across wetland unit surface water area with estimated values ranging from 1.85 x 10(3) to 5.37 x 10(3) g and 1.33 x 10(3) to 2.7 x 10(3) g during first and second phase of study, respectively. On the other hand phosphate phosphorus recorded relatively minimum wet deposition flux across wetland unit surface water area with estimated values ranging from 0.019 x 10(3) to 0.054 x 10(3) g and 0.012 x 10(3) to 0.025 x 10(3) g during first and second phase of study, respectively. A measurable variation within season in the observed chemical substances of limnological importance in rain water and in their precipitation mediated influx across the wetland surface can be linked to natural changes in the surrounding environment influenced with some interventions from anthropogenic activities.
- 出版日期2013-3
