The invention discloses a method for assessing the total output value of a
marine ecosystem. The method comprises the technical steps that the
ecological environment data of an evaluated sea area are collected, wherein the data comprise the area of the evaluated sea area, the yield and the market price of various kinds of seafood fished and cultivated by mankind and raw materials produced by the sea, the cost for fixing
carbon dioxide, the cost for releasing
oxygen,
primary productivity, environment capacity, the cost of manual treatment of pollutants and the like; a marine
ecological environment database is established; an assessment
system of the total output value of the
marine ecosystem is established; the total output value of the
marine ecosystem is evaluated, data are retrieved from the marine
ecological environment database, the marine ecological supply value, the marine ecological adjusting value, the marine ecological cultural value and the marine ecological supporting value are assessed respectively according to the assessment
system of the total output value of the marine
ecosystem, and accordingly the total output value of the marine
ecosystem is obtained. The method for assessing the total output value of the marine
ecosystem fills the blank of assessment of the total output value of the marine ecosystem, the value of the marine ecosystem is made to be dominant based on the
conversion method of the marine ecological environment, a simple computing method is formed, and a popularization and application prospect is achieved.