基于灰色关联熵的地下水环境演化模式判别模型研究  

Study on the Evaluation Model of Groundwater Environment Evolution Pattern Based on Grey Correlation Entropy

作　　者：姜纪沂[1] 张宇东[2] 谷洪彪[1] 左兰丽[2] 

机构地区：[1]防灾科技学院地震科学系,河北三河065201 [2]防灾科技学院防灾工程系,河北三河065201

出　　处：《吉林大学学报（地球科学版）》2009年第6期1111-1116,共6页Journal of Jilin University：Earth Science Edition

基　　金：中国地震局教师科研基金项目(20090104);国家'973'项目(G1999043606)

摘　　要：在耗散结构理论中,系统的信息熵越大,其有序度越低。地下水环境是符合耗散结构系统特征的动态有序系统,其演化进程中信息熵减少的特征可用来判别系统的演化方向。将地下水资源量作为决定其有序程度的序参量,按照地下水系统的实际开采量与可开采量之间的协同程度来指示系统的有序程度。将该两个序列之间关联系数的量化结果用信息熵来表述,构建基于灰色关联熵的地下水环境演化模式判别模型,通过不同时段系统的信息熵变化特征判别其演化方向。该模型在衡水市的应用研究表明,20世纪70年代以来深层地下水系统演化的信息熵变趋于减小,地下水系统功能逐渐退化,处于重建新的稳定态的演化过程中,地下水系统的状态和功能与原始的稳定态相比将存在极大的差异。该评价结果与地质环境监测反映的地下水环境的演化趋势一致。According to the theory of dissipative structure, the greater is the information entropy of system, the lower is its order degree. The groundwater environment is a dynamic ordered system, and it meets the characteristics of dissipative structure. The characteristics of information entropy reduction during the course of groundwater system evolution can be used to distinguish its evolution direction. The groundwater resource quantity was regarded as the sequential parameters, which determined order degree of groundwater system. The order degree of groundwater system can be indicated by concordance degree between groundwater actual withdrawals and allowable withdrawals of the groundwater system. The evaluation model of groundwater environment evolution pattern based on grey correlation entropy was founded, through which the evolution direction can be distlnguished by using the change characteristics of information entropy in various time-interval. The model was applied in the study of groundwater environment evolution in Hengshui, and the results indicated that information entropy of deep groundwater system had been tending to decrease since 1970＇s, and the function of the groundwater system had been degenerating. Therefore, the groundwater environment was in the evolution state of rebuilding a new stable state, which was significantly different from the primitive stable state. This assessment result is consistent with the evolution trend reflected from the geological environmental monitoring of groundwater environment.

关 键 词：地下水环境 耗散结构 灰色关联熵 演化模式 地下水 

分 类 号：P641.8[天文地球—地质矿产勘探]