Conclusions
The average population-weighted PM10 concentration is
0.345 mg m-3 more than that without population weighting,
an increase of nearly 5% from 0.329 mg m-3 to
0.345 mg m-3. Considering population spatial distribution
in Lanzhou, there are larger population living in
more polluted areas.
We select threshold concentration C0 at: 0 μg m-3 (no
harmful health effects), 20 μg m-3 (recommended by the
World Health Organization), and 50 μg m-3 (national first
class standard in China) to calculate excess morbidity cases.
For these three scenarios, proportions of the economic cost
of PM10 pollution-related adverse health effects relative to
GDP are 0.206%, 0.194% and 0.175%, respectively.