20-11    URBAN ECOLOGICAL NATURAL ENVIRONMENT(2005-2008)
Item 2005 2006 2007 2008
  Parks,Gardens and Green Areas  
    Parkes,Gardens and Green Areas (hectare) 5529 4037 6057 6468
    Green Space of Park  (hectare) 1568 1333 1389 1450
    Green Space in Constucted  Areas (hectare) 4047 4368 4680 5076
    Rate of Green Space in Constructed Areas (%) 38.8 40.6 41.6 42.1
    Per Capita  Green Area of Park (sq.m) 7.10 8.60 11.35 12.12
    Urban Parks (park) 18 19 21 21
    Park Area (hectare) 387 328 458 465
  Water, Air and Noise    
    Rate up to the Standards of Water  Quality for Urban Potable Water Sources (%) 100.0 99.8 100.0 100.0
    Proportion of Days with  Air Pollution Index less than 100 to Whole Year (%) 84.3 88.8 85.2 86.1
    Average Value of Noise in Whole Area (dB) 54.1 55.0 55.0 55.0
    Average Value of Noise Along Main Traffic Artery (dB) 67.9 67.1 66.8 67.0
  Harmless Disposal of Household Garbage and  Excrement    
    Wastes Transported (10,000 tons) 45.60 31.80 43.50 46.64
    Volume of Garbage Disposal (10000 ton) 42.00 31.80 43.48 46.64
    Rate of Harmless Disposal of Household Garbage (%) 92.1 100.0 100.0 100.0
    Rate of Harmless Disposal of Excrement and Urine (%) 100.0 100.0 100.0 100.0