| Total effect | Scale effect | Composition effect | Technique effect |
ΔCO2 | −3.9632*** | −2.8831* | 1.0429*** | −2.1230** |
| (1.4694) | (1.5185) | (0.3085) | (0.8954) |
ΔSO2 | −3.6204*** | −6.6724*** | 0.8954*** | 2.1566*** |
| (1.2316) | (1.2728) | (0.2586) | (0.7505) |
ΔEprice | −0.0658** | −0.0722** | −0.0060 | 0.0125 |
| (0.0282) | (0.0291) | (0.0059) | (0.0172) |
Δfdi/gdp | 1.0266* | 0.7387 | −0.3386*** | 0.6265* |
| (0.5473) | (0.5657) | (0.1149) | (0.3335) |
Δgdp | 0.0093*** | 0.0165*** | −0.0005 | −0.0068*** |
| (0.0015) | (0.0016) | (0.0003) | (0.0009) |
ΔSecond/third | 4.7407** | 2.7703 | −0.6507 | 2.6211* |
| (2.3708) | (2.4501) | (0.4978) | (1.4447) |
Eastern | 14.0276** | 7.4729 | 0.4000 | 6.1546* |
| (5.6438) | (5.8326) | (1.1851) | (3.4391) |
Central | 0.3884 | 2.7125 | 1.3502 | −3.6743 |
| (4.1098) | (4.2472) | (0.8630) | (2.5043) |
Constant | 105.5598*** | 89.9849*** | −15.5972*** | 31.1721** |
| (21.6713) | (22.3962) | (4.5507) | (13.2055) |
N | 285.0000 | 285.0000 | 285.0000 | 285.0000 |
r2_a | 0.3877 | 0.6111 | 0.1612 | 0.4048 |