Hokkaido Gov. Harumi Takahashi has issued an environmental appeal ahead of July's Group of Eight summit in her prefecture, calling on each of Hokkaido's 5.6 million residents to reduce carbon dioxide emissions from homes by 10 percent, or 1.1 kg a day, from current levels. The targeted figure is bigger than the 1-kg-a-day proposal by the Environment Ministry. Takahashi said at a symposium in Sapporo on Monday she expects the appeal to become a regional model used the world over for environmental preservation.