Does Pollution Prevention Reduce Toxic Releases? A Dynamic Panel Data Model
利用美国环保署有毒物质排放清单1991-2001年数据，采用动态面板模型处理内生性，发现企业自愿采取污染预防措施能显著减少有毒排放，但效果仅持续4-5年，持续采用可使稳态排放降低35%-50%。
We investigate the effectiveness of voluntary pollution prevention activities in reducing toxic releases from facilities that reported to the U.S. Environmental Protection Agency’s Toxics Release Inventory from 1991–2001, using generalized method of moments dynamic panel data models that recognize the potential endogeneity of the pollution prevention adoption decision on toxic releases. We find that pollution prevention adoption had a negative impact on toxic releases. The estimated coefficients suggest that the effect of pollution prevention adoption is substantial, but short-lived, dissipating within 4 to 5 years. However, a continual adoption of pollution prevention techniques leads to lower steady-state releases, with estimated reductions between 35% and 50%. <i></i>