METHOD OF EVALUATING EFFECT OF POND AQUACULTURE ON STATE OF AQUATIC ECOSYSTEM

摘要

FIELD: chemistry.;SUBSTANCE: method involves collecting samples directly in the region of functioning of the pond and in the control zone, and then determining content of chemical compounds in the samples and determining main quantitative indicators of components of the aquatic ecosystem based on said content. Quantitative indicators of the biota - number and biomass of phytoplankton, zooplankton and benthos - are also determined in the samples from the control zone and the region of functioning of the pond. The ratio of the quantitative indicators of the biota in the pond region to those in the control zone is then calculated. A reference table of ranges of the calculated chemical indicators of the ratios of components of the aquatic ecosystem is then created while adding rows with ratios of quantitative indicators of the biota into the table. By comparing the calculated ratios with ranges of identical ratios in the reference table, the effect of the pond on the state of the aquatic ecosystem is then determined.;EFFECT: high reliability of results.;1 ex, 4 tbl