Influential Factors Of Water Infiltration Measure Methods

Through the experiments, were research gradient, vertical location and aspect, soil moisture, soil surface disturbances, infiltration head and the placement of these instrument to this three methods. By data processing and analyzing, the main conclusions are drowned as follows:(1)While the increase of gradient water infiltration measured by all the three methods discrease, gradient have the same effect to the three methods. The different among methods case by instrument themselves. (2)While the altitude augmentation water initial infiltration increase, water stable infiltration show a few different, the time needed to reach the stable state show longer. (3)Aspect conditions show have the similar effect as the gradient and vertical location conditions, they all through some ways to effect soil characteristic to reach the different water infiltration process. Strictly speaking, terrain factors are no the really impress.(4)The water infiltration measure by this three methods show the same current with soil moisture influent. Water initial infiltration measured by ring swords method and double ring method have negatively correlated to soil moisture, and the time needed to reach the stable state take positively correlated to soil moisture. (5)After different disturb extent on soil surface , it show significantly differences. Ring swords method no suffer any effect, Hood feel no so much effect, double ring method show obvious change by the disturb. (6)Under different infiltration head, water infiltration measured by ring swords and double ring show distinct different. With the enhance of infiltration head water infiltration increase. (7)When the slope gradient more than 20 , the placement of the instruments case vastness different in the result measured by double ring and Hood, at about 10° it can only have some effect, when at about 5 ° it seen no effect.