To trade greenhouse gas emission credits on an electronic trading market, an amount of nitrogen applied or to be applied to obtain a desired crop yield using a genetically modified version of a plant is determined. The genetically modified version of the plant has a nitrogen utilization efficiency greater than a non-genetically modified version of the plant. An amount of greenhouse gas emission is determined based on the amount of nitrogen. A greenhouse gas credit is calculated based on the determined amount of greenhouse gas emission. The calculated greenhouse gas credit is conveyed to one or more potential buyers through the electronic trading market.為在一電子交易市場上交易溫室氣體排放信用存量,使用一植物之經基因改質版本決定已施加或將被施加之氮量,以獲得一想要之農作物產量。該植物之經基因改質版本具有一比該植物之未經基因改質版本較大的氮利用效率。基於該氮量決定一溫室氣體排放之數量。基於溫室氣體排放之所決定的數量計算一溫室氣體信用存量。該經計算的溫室氣體信用存量係經過該電子交易市場傳達至一或多個潛在買主。
