Japanese measure for destruction of environment

The roof and wall which planing grass are 29.1 hectare in Japan in 2006. The Ministry of Land, Infrastructure and Transport research show that this roof area is twice bigger than that in 2000. And this wall area is fifteen times bigger than that 2000. The company in the urban area is struggles planing grass on the roof anf wall for mitigation of heat island. I see the bilding planing green well recently. The green bildings is beautiful on the sight. I think the capital good for the earth is most advanced country.