김 양식장 해역의 물질수지 및 적정 수용량 산정

Abstract

Seaweed aquaculture is very important industry in Korea for last decade, counted for over 70% supplying the total coastal aquaculture production. Seaweed is a favorite food in Korea, the attention to the seaweed has intensely increased especially when it has worldwide known as one of solution for carbon dioxide increments. Jeolla-namdo has known as the largest Porphyra farm in Korea, however recently there have some problem while the farm facility has increased but production have remain in the same number. This condition represents the decrement on productivity yet study was not performed since 1990’s in this area. Some references reported that decrement on productivity was caused by low nutrient and the effect of excessive on farm facility. Therefore this study has conducted to estimate mass balance using simple box model. The result of this study shows that calculated N, P value contained in Porphyra production harvested was 201,558 kg for N, 36,012 kg for P and estimated from mass balance was 342,601 kg N, 38,295 kg P during 2 months (Jan.~Feb.), respectively, at Jindo-Haenam, a part of Jeolla-namdo. These studies also performed the estimation of nutrients harvest and Porphyra by calculating the concentration of nutrient inside the farm system comparing the minimum required nutrient for Porphyra cultivation. The results of additional harvestable nutrients were 82,719 kg for N, 11,242 kg for P and estimation maximum Porphyra production was 34,481,407 kg, 32,079,962 kg Porphyra (wet wt.) for 2 months, respectively. Lastly, output of this study was expected to be used as a sustainable management of the Porphyra farm.