基于信息熵理论的农业环境地质系统状态评价方法研究  

Study of agro-environmental geology system and its state evaluation base on information entropy theory

作　　者：严宝文[1] 方立 李靖[1] 许琴 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]河南黄河水文勘测设计院,河南郑州450004 [3]冯家山水库管理局午井灌溉管理处,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2007年第11期223-229,共7页Journal of Northwest A&F University(Natural Science Edition)

基　　金：陕西省自然科学基础研究项目(2005D06);西北农林科技大学优秀人才项目(04ZR013);西北农林科技大学科研专项(06ZR043)

摘　　要：为了针对性地研究黄土高原区各类农业环境地质问题的发生机制,制定相应的对策,对农业环境地质系统状况进行了评价研究,运用理论分析与实例验证方法,提出了农业环境地质系统包含农业地质环境和人类农事活动两子系统,某区农业环境地质系统的状态可由人类农事活动对农业地质环境要素的进占程度描述,并以信息熵理论来表征这一状态变化过程,探讨了区域农业环境地质系统状况的评价方法和步骤,最后以陕西省黄土地区为例进行了实际评价,结果与现实状况相吻合。　In order to research the occurring mechanism of every kind of agro-environment geological problem in the Loess Plateau,furthermore to make the relative countermeasure,it is a great item necessary to evaluate the system state of agro-environment geological in this area.By using theoretical analysis and case test,the agro-environment geology system may be divided to two subsystems,agro-geological environment and mankind＇s farming behavior.A given district＇s system condition may be expressed by taking degree of mankind＇s farming behavior to the key element of the agro-geological environment.In this paper,the information entropy theory is used to embody the process,therefore deduce a theoretical evaluation method on a given area＇s agriculture water and soil environment system state,and the theory is confirmed by taking Loess area of Shaanxi Province as an example.

关 键 词：农业环境地质 状态评价 信息熵 黄土高原 陕西省 

分 类 号：X141[环境科学与工程—环境科学]