Research on urbanization and construction of ecological civilized cities Law and system of the construction of ecological civilization Research on the theory and system of ecological civilization 并列题名：Law and system of the construction of ecological civilization Research on construction of the ecological civilization system Environmental protection NGOs and the construction of ecological civilization 并列题名：Environmental protection NGOs and the construction of ecological civilization on the judicial protection mechanism of the construction of ecological civilization Construction and sharing of ecological civilization Research on the construction of ecological civilization in rural China