摘要
为了定量分析不同土地利用对流域雨洪过程的影响,建立流域雨洪水动力数值模型,模拟了王茂沟流域不同土地利用情景方案的地表径流过程,对比流域洪峰流量削减程度。结果表明:在重现期为2、10、50、100 a一遇降雨条件下,对于不同土地利用情景方案,林地的位置对径流量影响较大;林地位于流域坡面下部时,对洪峰流量的削减作用最大;降雨重现期越长,林地位于流域坡面下部的削峰效果越好。该研究结果在优化流域内土地利用方案规划等方面具有重要意义。
To quantitatively analyze the impact of different land uses on the stormwater flooding process,a catchment hydrodynamic model was adopted to simulate the surface runoff process of Wangmaogou River Basin under different land use scenarios,meanwhile the reductions of peak discharge were compared and analyzed. The results show that the location of the forest land has a great influence on the runoff compared to the other land uses under the rainfall return period of 2 a,10 a,50 a and 100 a. When the forest land is located in the downstream of the basin,it has the largest reduction effect on the peak discharge. As the rainfall return period increases,the peak reduction effect of the forest land in the downstream of the basin becomes more remarkable. This study can provide practical guidance for the optimization of land use layout in the basin.
作者
孙亚联
李继成
杨东
白岗岗
郭凯华
SUN Yalian;LI Jicheng;YANG Dong;BAI Ganggang;GUO Kaihua(Power China Northwest Engineering Corporation Limited,Xi’an 710065,China;State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China,Xi’an University of Technology,Xi’an 710048,China)
出处
《水资源与水工程学报》
CSCD
2020年第6期36-40,46,共6页
Journal of Water Resources and Water Engineering
关键词
土地利用
流域雨洪过程
二维浅水方程
水动力模型
洪峰流量
land use
catchment stormwater flooding process
two-dimensional shallow water equation
hydrodynamic model
peak discharge
作者简介
孙亚联(1980-),女,陕西咸阳人,硕士,高级工程师,研究方向为水利水电工程;通讯作者:李继成(1980-),男,陕西咸阳人,硕士,高级工程师,研究方向为水利水电工程。
