摘要
于甘肃省安家沟流域选择设计15个径流小区,通过对径流小区1986—1999年的水文监测资料进行年尺度上的方差分析、多重比较和相关分析,研究不同土地利用类型对坡地产流、产沙的影响,同时分析年降雨量与坡地单位面积年产流、产沙量的相关关系。结果表明,相同坡度等级下5种土地利用类型坡地的单位面积年产流量之间及单位面积年产沙量之间都存在显著差异,大小顺序均表现为：坡耕地〉人工草地〉乔木林地〉自然草地〉灌木林地;在研究的坡度（10°-20°）范围内,同一土地利用类型、不同坡度径流小区的单位面积年产流量差异不显著,坡耕地和人工草地的单位面积年产沙量差异显著;年降雨量分别与坡地单位面积年产流量、产沙量无显著相关性。
In Anjiagou watershed of Gansu Province,15 runoff plots were selected and designed,for analysis of effect land use pattern on runoff and sediment yield on slopelands through variance analysis,multiple comparisons and correlation analysis of the hydrological monitoring data of the runoff plots at a year scale from 1986 to 1999,and also the relationship of annual rainfall with annual runoff and sediment yield per unit area of slope lands.Results show that on slopelands the same in slope gradient,significant differences existed among 5 runoff plots different in land use pattern in annual runoff and sediment yield per unit area,showing an order of sloping farmland artificial grassland arbor land natural grassland shrub land;and within the studied range of slopes（10°-20°）,no significant difference in annual runoff per unit area was observed between runoff plots the same in land use pattern,but significant differences were detected between runoff plots under farmland and artificial grassland;and no significant relationship of annual rainfall with annual runoff and sediment yield per unit area on the slope lands.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2010年第3期199-204,共6页
Journal of Ecology and Rural Environment
基金
"十一五"国家科技支撑计划重大项目(2006BAD09B02-03)
关键词
黄土丘陵沟壑区
径流小区
坡度
土地利用类型
产沙
产流
loess hilly region
runoff plots
slope gradient
land use type
runoff
sediment yield
