Natural Conditions
Area of Territory (million 9.60
Area of Sea (million 4.73
Average Depth of Sea (m) 961
Maximum Depth of Sea (m) 5377
Length of Coastline (km)
Mainland Coastline (km) 18000
Island Coastline (km) 14000
Number of Islands 5400
Area of Islands ( 38700
Distribution of Heat (Accumulated Temperature>= 0°C)  
Northern Heilongjiang and Tibet Plateau 2000-2500
Northeast Plain 3000-4000
North China Plain 4000-5000
Yangtze River Drainage Area and the Area to the south of it 5800-6000
Area to the South of Nanling Mountain 7000-8000
Precipitation (mm)  
Mid Taiwan Mountain Area >=4000
Southern China Coastal Area 1600-2000
Yangtze River Valley 1000-1500
Northern and Northeastern Area 400-800
Northwestern Inland 100-200
Tarim Basin, Turpan Basin and Qaidam Basin <=5
Percentage of Climatic Zones to Total Area of Territory  
Humid Zone (aridity<1.0) 32
Semi-Humid Zone (aridity 1.0-1.5) 15
Semi-Arid Zone (aridity 1.5-2.0) 22
Arid Zone (aridity>2.0) 31
a)The climate data refer to the average figures in many years.
b)Island area does not include that of Taiwan, Hong Kong and Macao.