Abstract: An afforestation and/or reforestation business system, which is capable of devising and evaluating an afforestation and/or reforestation business is provided. The system includes a communication system capable of communicating between a terminal at the business center and a terminal at respective local sites, a first database for storing records related to the afforestation and/or reforestation business, a second database for storing records related to tree species and the site information, a site determining portion for evaluating the proposed afforestation and/or reforestation sites using estimated carbon dioxide absorption amounts to be obtained by executing an afforestation and/or reforestation business, and a business plan determining portion for determining an afforestation and/or reforestation business by selecting an appropriate tree species and an appropriate area that can obtain the greatest profit and the greatest carbon absorption amount from the site.

Abstract: A reforestation project system is provided which is capable of devising and evaluating a reforestation project, the reforestation project comprises a project database for storing reforestation projects; a tree-type database, a condition information-collecting means for collecting the tree diameters and tree heights within local areas in a plurality of proposed reforestation sites input from the terminals; a reforestation site determining means for determining a reforestation site by calculating carbon dioxide absorption amounts at the present point in proposed reforestation sites from the tree diameters and tree heights in the local areas, and selecting a reforestation site having a determined carbon dioxide absorption amount that is smaller than a first threshold; a project devising means for calculating an maximum economic profit and maximum absorption of carbon dioxide when planting area in the reforestation site and the tree-types stored in the tree-type database are respectively changed.