12-6  Irrigation, Reservoirs, Flood Prevention, Water and Soil Conservation|12-6Irrigation,Reservoirs,FloodPrevention,WaterandSoilConservation|Item|2000|2005|2010|2014|2015||NumberofIrrigatedAreasatYear-end(set)|5683|5860|5795|7706|7728|33000HectaresandOver|101|117|131|176|176|20000-33000Hectares|141|170|218|280|280|EffectiveIrrigatedArea(10000hectares)|2449.3|2641.9|2941.5|3021.6|2990.222|33000HectaresandOver|788.3|1023|1091.8|624.1|1000.661|20000-33000Hectares|344|408|474|501|518.5|NumberofReservoirs(unit)|85120|85108|87873|97735|97988|LargeReservoir|420|470|552|697|707|Medium-sizedReservoir|2704|2934|3269|3799|3844|SmallReservoir|81996|81704|84052|93239|93437|CapacityofReservoirs(100millioncu.m)|5184|5624|7162|8396|8581|LargeReservoir|3842|4197|5594|6618|6812|Medium-sizedReservoir|746|826|930|1077.13738|1068|SmallReservoir|594|602|638|700.517482|701|Water-savingIrrigatedArea(10000hectares)|1638.9|2133.8|2731.4|2901.876|3106.044|AreaswithFloodPreventionMeasures(10000hectares)|2098.9|2133.9|2169.2|2236.934|2271.271|AreaofSoilErosionunderControl(10000hectares)|8096|9465|10680|11160.93|11554.66|TotalLengthofDikes(10000km)|27|27.7|29.4|28.4425|29.1417|AreaofLandProtectedbyDikes(10000hectares)|3960|4412|4683.1|4279.4|4084.4||a)Thecapacityofthelarge-scalereservoirisover100millioncubicmeters,whilethatofthemedium-scaleoneisfrom10to100millioncubicmeters,|andthatofthesmall-scaleoneisfrom100000to10millioncubicmeters.