摘要
通过生物措施、工程措施和耕作措施对滇中地区典型小流域———王家箐进行综合治理,对治理前后气象、水文、水土流失资料进行观测,运用灰色理论分析了降雨因子与产流、产沙的关联性。结果表明,在该小流域治理前后各降雨因子对径流量、泥沙量的影响的关联序基本不变,降雨复合因子PI30,PI60,PI10是影响产流、产沙的主要因子,降雨量是影响产流、产沙的第2因子,雨强对其影响居第3,降雨历时对小流域产流、产沙影响最小。
In order to control soil and water loss in the small Wang-Jia watershed in the central Yunnan Province, engineering, biological and crop cultivation measures have been implemented. The data of climate, hydrology and soil erosion have been collected. The con＇elation between rainfall factors and runoff and sediment are analyzed by using grew correlation analysis. Results show that incidence order between rainfall factors and runoff and sediment are stable after conservation implementation. In addition ,PI30 ,PI50 and PI10 are main factors influencing runoff and soil erosion, and rainfall and intensity of rainfall is less, and duration of rainfall is the least.
出处
《云南农业大学学报》
CAS
CSCD
2006年第3期336-340,共5页
Journal of Yunnan Agricultural University
基金
欧盟资助项目(ERBICT980236)
云南省科技厅资助项目(97C012)
关键词
滇中地区
小流域
灰色关联分析
降雨因子
产流
产沙
Central Yunnan province
small watershed
grew correlation analysis
rainfall factors
runoff
soil erosion
