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13-10 Irrigation, Reservoirs, Flood Prevention, Waterand Soil Conservation and Improvement of Saline-Alkaline Land

Item 1990 1995 2000 2002 2003 2004
 
Number of Irrigation Areas at the year-end(set) 5363 5562 5683 5691 5729 5800
33 000  Hectares and Over 72 74 101 110 112 111
20 000-33 000  Hectares 76 99 141 168 169 169
Effective Irrigated Areas (10 000 hectares) 2123.1 2249.9 2449.3 2503.0 2524.4 2550.6
33 000  Hectares and Over 604.7 631.4 788.3 915.8 938.1 971.4
20 000-33 000  Hectares 189.6 244.4 344.0 407.2 408.4 405.7
Number of Reservoirs 83387 84775 85120 85288 85153 85160
Large 366 387 420 445 453 460
Medium-sized 2499 2593 2704 2781 2827 2869
Small 80522 81795 81996 82062 81873 81831
Capacity of Reservoirs (100 million cu.m) 4660 4797 5184 5595 5658 5542
Large 3397 3493 3842 4229 4278 4147
Medium-sized 690 719 746 767 783 796
Small 573 585 594 597 597 599
Water-saving Irrigated Area  (10 000 hectares) 1638.9 1862.7 1944.3 2034.6
Flooded or Waterlogged Area(10 000 hectares) 1933.7 2006.5 2098.9 2109.7 2113.9 2119.8
Area of Soil Erosion under Control 5300 6690 8096 8541 8971 9200
  (10 000 hectares)
Improved Area of Saline-Alkaline Land 499.5 543.4 584.1 528.3 586.5 596.2
  (10 000 hectares)
Total Length of Dikes (10 000 km) 22.0 24.7 27.0 27.4 27.8 27.7
Area of Land Protected by Dikes 3200.0 3060.9 3960.0 4286.2 4387.5 4393.4
  (10 000 hectares)
 

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.



https://allcountries.org/china_statistics/13_10_irrigation_reservoirs_flood_prevention_waterand.html

These tables are based on figures supplied by the National Bureau Of Statistics of the The Peoples Republic Of China and are subject to revision by the National Bureau of Statistics of China.

Copyright © 2006 Photius Coutsoukis and Information Technology Associates, all rights reserved.

Revised 26-April-2006