农业水土环境系统及其状态评价方法研究

Structure of Agricultural Water and Soil Environment System and Its Condition Evaluation

农业水土环境系统包含农业水土环境和人类农事活动两个子系统。它们不能协调发展时产生原生和次生两类问题。某区农业水土环境系统的状态可由人类农事活动对农业水土环境要素及其构成类型的进占程度描述。本研究提出以信息熵理论来表征这一状态变化过程 ,从理论上探讨了区域农业水土环境系统状况的评价方法和步骤。

The agricultural water and soil environment system may be divided into two subsystems, agricultural water and soil environment and mankind's farming behavior. Original and secondary problems come into being while two subsystems do not develope harmonically. A given district's system condition may be expressed as taking degree of mankind's farming behavior extent to the key element the agricultural water and soil environment. A theoretical evaluation method on a given area's agricultural water and soil environment system state was made.