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Marine Environment
2007-12-11
Article type: Translated

III-1 Evaluation of Seawater Quality (2004) (10 000 sq.km)

 

Sea Area Measuring  Reasonably Lightly  Moderately  Heavily  Chief  
Stations Clean Polluted Polluted Polluted Pollutant 
　 (unit) Area Area Area Area  　
National 486 6.56 4.05 3.08 3.21 Inorganic Nitrogen
Bohai Sea 86 1.59 0.54 0.30 0.23 Inorganic Nitrogen
Yellow Sea 115 1.56 1.29 1.13 0.81 Inorganic Nitrogen
East China Sea 127 2.16 1.36 1.21 2.07 Inorganic Nitrogen
South China Sea 158 1.26 0.86 0.44 0.10 Inorganic Nitrogen

Source: State Oceanic Administration (the same as in following table).


III-2 Evaluation of Seawater Quality in Offshore Area (by Degree of Pollution) (2004) (10 000 sq.km)

 

Sea Area Measuring  Reasonably Lightly  Moderately  Heavily  Chief  
Stations Clean Polluted Polluted Polluted Pollutant
　 (unit) Area Area Area Area 
National 340 3.34 2.25 2.80 3.17 Inorganic Nitrogen
Bohai Sea 58 0.98 0.51 0.30 0.23 Inorganic Nitrogen
Yellow Sea 76 0.34 0.26 0.93 0.78 Inorganic Nitrogen
East China Sea 90 0.95 0.64 1.14 2.07 Inorganic Nitrogen
South China Sea 116 1.07 0.84 0.44 0.10 Inorganic Nitrogen


III-3 Evaluation of Seawater Quality in Offshore Area (by Type of Seawater) (2004) （%)

 

Sea Area Measurement Grade I Grade II Grade III Grade IV Worse than Chief  
　  Stations(unit) 　 　 　 　 Grade IV Pollutant 
National 246 11.4 38.2 15.4 11.8 23.2 Copper
Bohai Sea 42 7.1 33.3 14.3 16.7 28.6 Inorganic Nitrogen
Yellow Sea 48 25.0 58.4 8.3 8.3 Inorganic Nitrogen
East China Sea 93 17.2 21.5 23.7 37.6 Copper
South China Sea 63 20.6 57.2 12.7 　 9.5 Inorganic Nitrogen

Source: State Environmental Protection Administration.


III-4 Discharge of Pollutants into Sea from Offshore Oil Exploration and Exploitation (2004) (cu.m)

 

Sea Area Sewage Sludge Debris Sewage from Domestic Domestic  Use of Oil 
from from Engineroom Wastes Sewage Expellant
　 Production 　 Drilling 　 (ton) 　 (kg)
National 75873159 50075.7 37226.5 21807.1 7486.9 178471.9 4395.0
Bohai Sea 4389379 6846.9 24819.5 375.4 6936.5 79537.4 4395.0
Yellow Sea
East China Sea 1547786 5781.3 2818.7 27.0 197.3 4813.7
South China Sea 69935994 37447.5 9588.4 21404.7 353.2 94120.8 　
Source: State Oceanic Administration.
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