As an important component part of human inhabited environment , urban gardening and greening is the biggest one of factors in respect of influencing on urban ecologic environment , whose function is to crucially regulate urban ecologic environment and to be the �� regulator �� of urban ecologic equilibrium . alsoa , it is the important place for leisure , entertainment and physical exercise for residents , and can turn into a carrier to the realization of human self - integrity as well as an assurance of the upgrade of life quality