草原环境监测与环境质量的综合评判 Ⅰ.草原群落环境质量的评价

The Monitoring of Steppe Environment and A Synthetical Judgement of Environmentai Quality Ⅰ. The Evaluation of Environmental Quality on Steppe Community

本文采用模糊数学综合评判的方法对草原环境顷量作出评价,模糊评判以环境监测为基础,监测分四个层次进行。本文只涉及前两个监测层次,即特定群落演替过程的动态监测和同一群系不同群丛间的对比性监测。被评判方面确定为A={种的多样性指数,高度,密度,生物量};综合评判的评价集为:X={优,良,中,劣}

This paper adopted a method of fuzzy synthetical judgement to evaluate the environmental quality of steppe. The fuzzy judgement is based on the environmental monitoring. The monitoring of steppe environment is divided into four gradation. This pappe deals with as follows two gradation: 1. The dynamic monitoring of successional seties of community; 2. The contrast monitoring of different community which belong to a formotion. The aspect of judgement as follows: A={diversity index, hight, density, biomass} The set of judgement as follows: X={high-class,good,middling,low-grade}