20-10    市区城市生态自然环境情况(2007-2011)
                  URBAN ECOLOGICAL NATURAL ENVIRONMENT(2006-2011)
    2007 2008 2009 2010 2011
Item
园林绿化 Parks,Gardens and Green Areas
  园林绿地面积(公顷)           Parkes,Gardens and Green Areas (hectare) 6057 6468 6773 7222 7535
  公园绿地面积(公顷)           Green Space of Park  (hectare) 1389 1450 1561 1632 1704
  建成区绿化覆盖面积(公顷)     Green Space in Constucted  Areas (hectare) 4680 5076 5640 6451 7302
  建成区绿化覆盖率(%)       Rate of Green Space in Constructed Areas (%) 41.6 42.1 42.1 42.2 42.2
  人均公园绿地面积(平方米)       Per Capita  Green Area of Park (sq.m) 11.35 12.12 12.20 12.35 12.41
  城市公园个数(个)           Urban Parks (unit) 21 21 24 25 25
  公园面积(公顷)               Park Area (hectare) 458 465 489 520 520
水、空气和噪声情况 Water, Air and Noise
  城市集中式饮用水源地水质   Rate up to the Standards of Water  Quality for  100.0 100.0 100.0 100.0 100.0
    达标率(%)     Urban Potable Water Sources (%)
  空气污染指数小于100天数占   Proportion of Days with  Air Pollution Index less  85.2 86.1 91.5 91.5 92.1
    全年天数的比例(%)     than 100 to Whole Year (%)
  区域环境噪声平均值(分贝)   Average Value of Noise in Whole Area (dB) 55.0 55.0 54.7 54.4 54.7
  交通干线噪声平均值(分贝)   Average Value of Noise Along Main Traffic Artery (dB) 66.8 67.0 67.8 67.4 67.3
生活垃圾无害化处理 Harmless Disposal of Household Garbage
  垃圾清运量(万吨)   Wastes Transported (10000 Tons) 43.50 46.64 49.16 51.99 54.95
  垃圾无害化处理量(万吨)   Volume of Garbage Disposal (10000 ton) 43.48 46.64 49.16 51.99 54.95
  生活垃圾无害化处理率(%)   Rate of Harmless Disposal of Household Garbage (%) 100.0 100.0 100.0 100.0 100.0