摘要
以 1998年霍林河特大洪水为例 ,在进行洪水对环境影响作用分析的基础上 ,将洪水发生的危险系数、地面高程、地形坡度、降雨影响程度、土地盐碱率和草地开垦率 6个控制变量划分为两个主分量 .由于洪水引起的环境突变可以归纳为一种耦合突变 ,我们采用尖点突变模型进行求解 ,得出各主分量的数学表达式和水环境突变区域边界 ,绘制了该流域环境突变分区图 ,论证了应用尖点突变模型研究环境突变的合理性 .
The paper took an example for the tremendous flood of Huolin River in 1998 and the six control variables——danger coefficient of flood produced, elevation, gradient of ground, rainfall, rate of alkalized soil and the reclaiming grassplot were classified as two main weight variables based influence on the water environment. Because of the environmental change aroused by flood is a coupling mutation, mathematical expressions of two main weight variables and mutations were achieved using needle mutation model.
出处
《环境科学学报》
CAS
CSCD
北大核心
2002年第4期443-447,共5页
Acta Scientiae Circumstantiae
基金
国家教委博士点基金 (990 18710 )资助
