Supply of ecological products based on heterogeneity of public goods Construction of ecological curriculum system in universities and colleges A study on fiscal and taxation policies for ecological compensation Similarity Search Algorithm over Data Supply Chain Based on Key Points Practical Cryptanalysis of a Public Key Cryptosystem Based on the Morphism of Polynomials Problem Creating Inclusive Global Value Chains under the BRI from the Perspective of Public Goods Supply and Demand A reseArch of theoreticAl frAmework for ecologicAl trAnsportAtion IntegratIng ecologIcal cIvIlIzatIon concept Into the envIronmental legal InstItutIon Contents of Ecological Economy,Vol.15,2019 Construction of Xi’an ecological old-age care community in the new urbanization