安家沟流域不同植物措施坡耕地的产流产沙特征

Characteristics of Runoff and Sediment Yield of Vegetation Measures on Slope Farmland in Anjiagou Watershed

根据安家沟流域2007—2010年5—9月份径流小区观测资料,经过分析计算得到各小区的单位面积径流和累积产沙量,并对各植物措施小区的产流、产沙特征进行了研究。结果表明,5种植物措施小区的产流强度由强到弱的顺序为:油松>小麦>红豆草>封禁>沙棘;产沙强度表现为:小麦>红豆草>油松>封禁>沙棘;各种措施径流小区径流量、泥沙量与坡度呈正相关关系,且均达到显著相关水平;产沙量与径流量具有一定的相关性。

Based on the runoff plot data of Anjiagou watershed in 2007--2010, we research the rainfall-runoff per area and the cumulative sediment load under different vegetation measure conditions were obtained, and the characteristics of runoff and sediment under different conditions were analyzed. The results show that the chinese pine slope farmland had the highest runoff and the wheat slope farmland had the highest sediment load. The relationship of runoff yield in the five slope farmlands are in order of chinese pine slope farmland〉 wheat slope farmland〉sainfoin slope farmland〉banned〉seabuckthorn slope farmland. The relationship of sediment yield are in order of wheat slope farmland〉sainfoin slope farmland〉chinese pine slope farmland〉 banned〉seabuekthorn slope farmland. The rainfall-runoff and sediment load are positively eorrelated with slope. Sediment yield has some correlation with runoff.