Empirical Analysis on Pollution Control Effects Decomposition of Environmental Protection Investments

Based on the decomposition analysis method of pollution change, the article extended connotation of decomposition model, and applied it to the analysis of pollution removal factors. It quantitatively decomposed effects of increased environmental protection investments upon the change of COD removal into scale effect, structure effect and technology effect. Results show that the scale effect makes the largest contribution to the removal of COD, the structure change of environmental protection investments and technical effect perform negative effects. The environmental pollution control appeared as a rude mode, and the efficiency of pollution control is relatively low. Therefore, we should increase investment in industrial pollution treatments, promoting the application of friendly-sound and advanced technology, intensifying the construction of pollution treatment infrastructures and supervision on the whole operation so as to raise the environment benefits of environmental protection investments.