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.