摘要
利用径流小区观测法,对坡改梯+杨梅+百喜草(C1)、坡改梯+地瓜+百喜草(C2)、山边沟+鱼鳞坑+金银花(C3)、顺坡+油茶(C4)和竹节沟+乔灌草(C5)以及无水保措施(CK)6种处理的径流小区在自然降雨条件下的产流产沙进行定量分析,结果表明:(1)月产流量、月产沙量与月降雨量均具有一定的对应关系。(2)有水保措施径流小区的产流量和产沙量均小于无水保措施径流小区。(3)不同水保措施下的径流小区月平均产流量分别为0.32m^3、0.36m^3、0.33m^3、0.96m^3和0.34m^3;不同水保措施下的径流小区月平均产沙量分别为0.30kg、0.61kg、0.26kg、0.89kg、0.33kg和3.97kg。(4)不同水保措施的减流率分别为77.78%、75.28%、77.36%、33.33%和76.25%;不同水保措施的减沙率分别为92.34%、84.63%、93.45%、77.68%和91.79%;C4的减流和减沙效果明显比其他几种水保措施差。
By using the location observation, it was quantitatively analyzed the characteristics of runoff generation and soil erosion under the natural rainfall condition in the runoff plots with under six different measures incIuding slope to terraced field ＋ Myrica rubra ＋ Paspalum notatum（ C1 ）, slope to terraced field ＋ Pachyrhizus ＋ Paspalum notatum （ C2）, hillside ditch ＋ fish - scale pits ＋ Lonicera japonica （ C3 ）, straight planting ＋ camellia oleifera （ C4）, slub ditch ＋ arbor and shrub and herb （C5） and no soil conservation measure （CK）, etc. The results show that： （-） the monthly runoff amounts, sediment yields and rainfall volume showed the correlation at certain degrees, respectively; （-） the runoff amounts and sediment yields in runoff plots with soil and water conservation measures were smaller than those in runoff plots without soil and water conservation measures, respectively; -） in 5 runoff plots with the soil con- servation measures, the monthly mean runoff amounts were 0.32m^3, 0.36m^3, 0.33m^3, 0.96m^3 and 0.34m^3, respec- tively, and the monthly mean sediment yields were 0.30kg, 0.61kg, 0.26kg, 0.89kg, 0.33kg and 3.97kg, respectively; @ in 5 runoff plots with the soil conservation measures, the runoff reducing rate were 77.78%, 75.28%, 77. 36%, 33.33% and 76.25%, respectively, and the sediment reducing rate were 92.34%, 84.63%, 93.45%, 77. 68% and 91.79%. C4 had the obvious lowest effect on reduction of runoff and sediment yield.
作者
熊伟
Xiong Wei(Soil and Water Conservation Station of Ninghua County, Fujian Province 36540)
出处
《亚热带水土保持》
2017年第4期33-36,共4页
Subtropical Soil and Water Conservation
关键词
水保措施
产流量
产沙量
宁化县
soil and water conservation measures, runoff yield, sediment yield, Niangua County
