The results of the year are summarized as follows: (一) Environmental loads and trends: The total city population from 1988 to 2014, the average growth rate is 2.%. Over the years, the population increased slowly since 1999. In these four years, the population growth has shown negative growth. Till 2015, the amount of population reaches 270,415 people. The population density is 4,505 people per square kilometer, which ranked No. 2 in the whole country. In 2015, the registered vehicle accounts for a total of 274,880 vehicles. In the past 11 years, as for the growth of the number of all types of vehicles, the growth rate is 3.6%. That has been slowing down then past 10 year (1999~2008) growth rate 24%. Till 2015, there are in total 416 registered industries. Compared with that in 2014, it was the same. Over the years (2004 to 2015), it showed negative growth, and the rate of variation is -9%. As for construction projects since 2008, the number has gradually decreased. In recent years, the number of engineering has increased. The highest is in 2010 and 2013 respectively, with the number of 1,419 pieces. Pollution management with the control measures, the reduction rate has reached 64.3%, the reduction rate are higher than past every years. Petition cases of environmental pollution has gradually increased year by year in the city, and non-odor pollutants (such as open burning, dust (construction engineering), industrial, vehicle idling and exhaust) are the main ones. It results from the rise of the public environmental awareness and concern at home environmental quality. (二) Current air quality conditions: Yun Chia Air Quality Region, As for the PSI>100 rate is 0.85%, that air quality adverse event day is 28 station day. Since 1994, the best year for air quality. Till 2013, air quality affected by the particulate matter. The PSI>100 rate is 2.96% Bad than last year (0.85%). However, the overall air quality in the Yun Chia air quality region remain to improve air quality trends. (三) Adverse air quality notification operations: Statistically, the number of the adverse air pollution notification is 122 times in total this year (including 122 times of forecasting ), with the suspended particles in majority. Total air pollution notification lower than last year (2012 year is 21 times). After each adverse notification, their PSI values have increased, which is 90 times in total. (四) Air purification zones: There were had 8 air purification zones in chiayi city. that include 6 green space , 2 bicycle paths, total green lands was 11.45 Ha. Aspects of the carbon sink tree measurements of the carbon sink tree measurements completed two purification region.

Environmental、Current air、Air purification zones