CAJ | 학술논문

选择屯溪、东湾及王快流域为典型流域,挑选合适的目标函数,采用单纯形法率定参数,研究流域分块对新安江模型 S M、C S、C I 及 CG 等参数的影响。结果表明,随着流域分块数增加：降雨资料均化程度减小,S M 呈增大趋势,CS 呈减小趋势,CI 及 CG 基本保持不变；洪量、洪峰合格数及确定性系数均呈增大趋势,当子流域面积小于1000 km2时模拟精度大幅度改善。
선택둔계、동만급왕쾌류역위전형류역,도선합괄적목표함수,채용단순형법솔정삼수,연구류역분괴대신안강모형 S M、C S、C I 급 CG 등삼수적영향。결과표명,수착류역분괴수증가：강우자료균화정도감소,S M 정증대추세,CS 정감소추세,CI 급 CG 기본보지불변；홍량、홍봉합격수급학정성계수균정증대추세,당자류역면적소우1000 km2시모의정도대폭도개선。
In this study, we took the Tunxi, Dongwan, and Wangkuai watersheds as typical watersheds and studied the effect of watershed subdivision on the Xin’anjiang model’s parameters, including SM , CS , CI , and CG . We used the simplex algorithm with suitable objective functions to calibrate the parameters of the model. The results of the study show that, with the increase of the number of watershed subdivisions, the homogenization degree of rainfall data decreases, SM has an increasing trend, CS has a decreasing trend, and CI and CG remain invariant. The number of qualified flood volume and flood peaks and the deterministic coefficient show an increasing trend with the increase of the number of watershed subdivisions. When the area of the sub-watershed is less than 1 000 km2 , the simulation accuracy improves significantly.