Another definition "Ecological economics addresses the relationships between ecosystems and economic systems in the broadest sense.These relationships are the locus of many of our most pressing current problems(i.e.sustainability, acid rain,global warming,species extinction,wealth distribution)but they are not well covered by any existing discipline.Environmental and resource economics,as it is currently practiced,covers only the application of neo- classical economics to the environmental and resource problems. 2024/8/6 生态经济理论前沿 102024/8/6 生态经济理论前沿 10 Another definition