湖南省2015年10月城市环境空气质量月报
湖南省环境质量月报统计结果表明:按GB 3095-2012和HJ 663-2013评价,本月,我省14个城市环境空气质量达标天数比例范围在51.6%~96.8%之间,平均达标天数比例为66.6%;平均超标天数比例为33.4%,其中轻度污染占32.9%,中度污染占0.5%,无重度及以上污染天气。影响城市环境空气质量的主要污染物是细颗粒物。详见表1。
表1 2015年 10月14个城市空气质量状况统计表
城市 |
空气质量类别分布(天数) |
污染天数中首要污染物 分布(天数) |
优良 率% |
达标 天数 |
有效天数 |
PM2.5 达标天数 |
PM2.5 有效天数 |
PM2.5 达标天数比例 % | ||||||||||||||
优 |
良 |
轻度污染 |
中度污染 |
重度污染 |
严重污染 |
SO2 |
NO2 |
PM10 |
CO |
O3 |
PM2.5 |
本月 | ||||||||||
长沙 |
4 |
13 |
13 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
10 |
54.8 |
17 |
31 |
18 |
31 |
58.1 | ||||
株洲 |
2 |
18 |
10 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
5 |
66.7 |
20 |
30 |
23 |
31 |
74.2 | ||||
湘潭 |
3 |
13 |
15 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
10 |
51.6 |
16 |
31 |
17 |
31 |
54.8 | ||||
岳阳 |
4 |
13 |
14 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3 |
11 |
54.8 |
17 |
31 |
19 |
31 |
61.3 | ||||
常德 |
5 |
19 |
5 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
3 |
82.8 |
24 |
29 |
26 |
29 |
89.7 | ||||
张家界 |
5 |
16 |
10 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3 |
7 |
67.7 |
21 |
31 |
21 |
31 |
67.7 | ||||
衡阳 |
3 |
15 |
13 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
13 |
58.1 |
18 |
31 |
18 |
31 |
58.1 | ||||
邵阳 |
3 |
13 |
14 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
12 |
53.3 |
16 |
30 |
17 |
31 |
54.8 | ||||
益阳 |
5 |
14 |
10 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
9 |
63.3 |
19 |
30 |
20 |
30 |
66.7 | ||||
郴州 |
3 |
19 |
9 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
7 |
71.0 |
22 |
31 |
23 |
31 |
74.2 | ||||
永州 |
7 |
23 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
96.8 |
30 |
31 |
31 |
31 |
100 | ||||
怀化 |
2 |
20 |
9 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
8 |
71.0 |
22 |
31 |
22 |
31 |
71.0 | ||||
娄底 |
3 |
17 |
11 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
6 |
5 |
64.5 |
20 |
31 |
20 |
31 |
64.5 | ||||
吉首 |
6 |
18 |
7 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
7 |
77.4 |
24 |
31 |
24 |
31 |
77.4 | ||||
合计 |
55 |
231 |
141 |
2 |
0 |
0 |
0 |
0 |
1 |
0 |
35 |
107 |
66.7 |
286 |
429 |
299 |
431 |
69.5 | ||||