Surface area [km2] | 2,740* |
Volume [km3] | 17.8 |
Maximum depth [m] | 30.8 |
Mean depth [m] | 6.7 |
Water level | Unregulated |
Normal range of annual water | |
level fluctuation [m] | 6.5-17.8 |
Catchment area [km2] | 259,430 |
* At the low water level. |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann. | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean temp. [deg C] | 4.5 | 5.7 | 10.3 | 16.2 | 22.3 | 25.0 | 28.8 | 27.2 | 22.5 | 18.0 | 18.2 | 7.3 | 16.7 |
Precipitation [mm] | 77 | 78 | 176 | 149 | 162 | 170 | 123 | 177 | 48 | 91 | 116 | 11 | 1,369 |
Chenglingji, 1982 | ||||||||||||
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | 11 | 4 | 9.8 | 13.1 | 21.2 | 23.8 | 26.8 | 28.4 | 25.3 | 23.3 | 18.3 | 17.9 |
Chenglingji, 1982 | ||||||||||||
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
- | 0.24 | 0.25 | 0.12 | - | 0.16 | 0.11 | 0.21 | 0.20 | 0.24 | 0.22 | 0.26 | 0.26 |
E2 pH |
Chenglingji, 1982 | ||||||||||||
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | 7.9 | 7.9 | 8.0 | 7.9 | 8.0 | 7.8 | 7.8 | 7.9 | 7.9 | 8.1 | 8.0 | 8.0 |
Chenglingji, 1982 | ||||||||||||
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | - | - | - | - | 7.7 | - | - | 7.9 | - | - | 8.4 | - |
Chenglingji, 1983 | ||||||||||||
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | 1.3 | 1.4 | 1.7 | 1.7 | 1.4 | 1.6 | 1.3 | 1.5 | 1.0 | 0.9 | 1.2 | 1.1 |
Chenglingji, 1983 | ||||||||||||
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | - | - | - | - | 0.12 | - | - | 0.38 | - | - | 0.3 | - |
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | - | - | - | - | 0.30 | - | - | 0.35 | - | - | 0.43 | - |
Chenglingji, 1982 | ||||||||||||
Depth [m] | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 | .001 | .004 | .000 | .005 | .003 | .001 | .000 | .000 | .002 | .000 | .005 | .000 |
Area [km2] | [%] | |
---|---|---|
Natural landscape | ||
Woody vegetation | 7,990 | 25.9 |
Herbaceous vegetation | 2,120 | 6.9 |
Swamp | 4,938 | 16.0 |
Agricultural land | 8,900 | 28.8 |
Residential area | 4,559 | 13.2 |
Others | 2,837 | 9.2 |
Total | 31,344 | 100.0 |
1982 | |||||
Gross product during the year [yuan] | No of persons engaged | No. of establishments | Main products or | major industries | |
---|---|---|---|---|---|
Primary industry | 322,000 | 4,725,000 | N.A. | ||
Agriculture | 230,000 | N.A. | N.A. | 1) | |
Fisheries | 6,000 | N.A. | |||
Others | 86,000 | N.A. | |||
Secondary industry | 250,000 | 640,000 | 2,280 | ||
Manufacturing | N.A. | N.A. | N.A. | 2) | |
Mining | N.A. | N.A. | N.A. | 3) | |
Tertiary industry | N.A. | N.A. | N.A. |
1982 | |||
Population | Population density [km-2] | Major cities (population) | |
---|---|---|---|
Total | 11,754,000 | 381.0? | Changsha (ca. 800,000), Yueyang. |