潋水流域产水产沙自然过程的计算机模拟Ⅰ.数学模型体系与参数输入

使用流域尺度土壤和水资源管理模拟模型SWRRB（包括198个数学方程）,对面积为579.3km2的江西潋水河流域的产水量、产沙量等自然过程进行了计算机模拟,获得了较好的模拟结果.模拟成功的关键是：（1）将流域划分为多个亚区;（2）精心而周到地准备输入参数;（3）按各输入参数对各输出参数影响大小的顺序进行充分的实验和参数调整以达最佳结果.文中对亚区划分和地形要素、气温、降雨、土壤特性和径流曲线系数的赋值给予了较多的注意.

COMPUTER SIMULATION OF WATER YIELD,SEDIMENT YIELD AND OTHER NATURAL PROCESSES IN LIANSHUI BASIN I.MATHEMATIC MODEL SYSTEM AND PARAMETER INPUT

The Basin Scale Simulation Model for Soil and Water Resources Management-SWRRB, which includes 198 mathematic equations, was used to simulate water yield, sediment yield and other natural processes in the Lianshui Basin, 579.3 km² in area in Jiangxi Province, China.A good result was obtained.Successful simulation depends on: (1) dividing the basin into more subareas; (2) elaborately and thoroughly preparing input parameters; (3) fully conducting simulation experiments and adjusting parameters one by one according to the order of magnitude of the influences of input parameters on output parameters, to the optimal effect.More attention was paid to subareas dividing and values assigning to topographical elements, air temperature, rainfall, soil properties and RCN.