摘要
以北碚区城区及其城周山体构成的小流域为例,进行地表径流分析,讨论城市土地利用类型与地表径流的关系,同时探讨了北碚区城市用地的关键点.结果显示：从产流量看,建设用地产流量占总产流量的49.84%,林地占23.57%;从径流河网分布看,研究区内4级以下地表径流多被建设用地覆盖.研究区范围内共有1级地表径流汇水点114个,2级地表径流汇水点33个,3级地表径流汇水点18个,其中1级汇水点多分布于两侧山体中,被林地覆盖,2,3级汇水点多分布于城区朝缙云山方向的边界至山脚200~500 m高程范围内,从保护城区地表水循环的平衡与健康角度出发,此区域应为北碚区城区扩张过程中重点规划区域.
Taking the small watershed in Beibei district of Chongqing for exam face runoff, discusses the relationship between the type the key point of land utilization of Beibei. The runoff g counts for 49. 84% and 23.57% of the total, respectivel of land utilization an ple, this paper analyzes sur- d surface runoff and studies enerated on construction land and forest land ac y. As for the distribution of runoff network in the research area, the surface runoffs under Level 4 are mostly covered by construction land. There are 114 catchment points of Level 1 surface runoff, 33 catchment points of Level 2 and 18 catchment points of Lev el 3. Catchment points of Level 1 are mainly distributed in the hill bodies on both sides of Beibei and cov ered by forest land; catchment points of Level 2 and Level 3 are mainly located from the boundary of the city in the direction of the fore, from the point of view Beibei city expansion nyun Mountains of protecting th to the mountain foot with an elevation of 200 500 m. There e balance and health of city surface water, it is the key area of
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第3期8-15,共8页
Journal of Southwest University(Natural Science Edition)
基金
国家林业局林业公益性专项基金(201004064)
关键词
地表径流
城市土地利用类型
关键点
北碚区
surface runoff
type of city land utilization
key point
Beibei district
