8-11 Irrigation, Reservoirs, Flood Prevention, Water and Soil Conservation and Improvement of Saline-Alkaline Land |  |  |  |  |  |  |
Item | 2000 | 2001 |
Irrigated Areas (1000 hectares) | 3388.03 | 3423 |
Effective Irrigated Areas | 2256.96 | 2276 |
Irrigated Wooded-land Areas | 425.65 | 442 |
Irrigated Orchard Areas | 141.64 | 162 |
Irrigated Pasture-land Areas | 438.93 | 450 |
Other Irrigated Areas | 124.85 | 93 |
Number of Reservoirs | 373 | 381 |
Large | 6 | 9 |
Medium-sized | 69 | 73 |
Small | 298 | 299 |
Capacity of Reservoirs (100 million cu.m) | 39.25 | 47.67 |
Large | 13.22 | 20.51 |
Medium-sized | 19.88 | 21 |
Small | 6.15 | 6.16 |
Water-saving Irrigated Areas (1000 hectares) | 1265.94 | 1266 |
Area with Flood Prevention Measures (1000 hectares) | 37.81 | 35.58 |
Area of Soil Erosion under Control (1000 hectares) | 68.78 | 81.97 |
Improved Area of Saline-Alkaline Land (1000 hectares) | 502.85 | 507 |
Total Length of Dikes (km) | 5129 | 5309 |
Area of Land Protected by Dikes (1000 hectares) | 1167 | 1168.6 |
Note: a) The capacity of the large reservoirs is over 100 million cubic meters, while that of the medium ones is from 10 million to 100 million cubic meters, and that of the small ones is from 100 000 to 10 million cubic meters. b) The data in the table is offered by the Bureau of Water Conservancy together with table 8-12,13. c) The data in 2000 exclude Xinjiang Production & Construction Group.