METHOD FOR EXTRACTING FACTOR AFFECTING MARINE ECOSYSTEM AND METHOD FOR CONTROLLING MARINE ECOSYSTEM

PROBLEM TO BE SOLVED: To extract affectors to control the marine ecosystem and to establish a method for controlling the marine ecosystem by the extracted affectors. SOLUTION: Information on one or a plurality of items exhibiting the state of the marine ecosystem is collected for a certain period of time. Whether or not the change of the item is expressed by some function is discriminated on the basis of the information. A plurality of the affectors to be expected to have some kind or another affect on the marine ecosystem are selected. Information on the discriminated items is collected while changing the state amounts of the discriminated affectors. The affectors to become parameters of a function representing the changes of the discriminated items are extracted from a plurality of the affectors on the basis of the information. A numerical expression model simulating the function is prepared by using the extracted affectors as parameters. The amounts of the extracted affectors are determined so as to direct the discriminated items in a desired direction from the numerical expression model. The affectors of the determined amounts are added to the marine ecosystem. COPYRIGHT: (C)2003,JPO