Title: Interception Effect of Surface Runoff on Different Width Bambusa rigida Keng Riparian Buffer Strips
Abstract: Using the precipitation,throughfall,stemflow of bamboo river buffer strips at 2008 to calculate canopy interception,measure the max water-holding capacity of forest litter and soil in winter and summer respectively,building simple slope runoff to observe surface runoff on different width buffer strips through 5 m to 40 m. The result show that canopy interception is 315.6 mm and account for 32.4% of precipitation of the whole year,canopy interception increase with precipitation,while canopy interception rate decrease. Selecting 24 groups of precipitation and canopy interception to make function is I=0.7791P0.78. The biomass of bamboo litter is 2.87 t/hm2 and max water-holding capacity is 9.13 t/hm2 which is as 3.2 times as dry weight. Litter interception effect is obviously weaken because of precipitation continuity on times distribution,the interception of litter account for 9.2% of precipitation in fact. The bamboo has a positive effect on soil physical properties,soil bulk density decrease with soil depth and accelerate surface runoff infiltration. The max interception of soil is 497.36 t/hm2. With the increasing width of river buffer strips,surface runoff decrease. The 20 m width river buffer strips could reduce 40.7% runoff and interception rate has no significant change when the buffer strips width continue to incerese.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 2
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