All members of the board shall be appointed and shall be selected and approved for appointment on the basis of their educational and professional qualifications and their general knowledge of, interest in, and experience with, problems relating to watershed management (including hydrology and soil science), forest management practices, fish and wildlife, range management, forest economics, or land use planning. Five members shall be selected from the general public, three members shall be selected from the forest products industry, and one member shall be selected from the range livestock industry. At no time shall a majority of the members, nor any of the members selected from the general public, be persons with a direct personal financial interest, within the meaning of Section 1120 of the Government Code, in timberlands. All members of the board shall represent the general public interest.