摘要
在综述以往负离子评价模型的基础上 ,提出了空气负离子系数的概念 ,建立了空气负离子系数模型 (p)及森林空气离子评价模型 (FCI) ,分析研究了大量在森林环境中测得的空气离子浓度数据 ,采用标准对数正态变换法 ,制定出了森林游憩区空气负离子分级标准 (SGFA)及评价指数分级标准 (EISGFA)。SGFA将森林游憩区空气离子分为 6个等级 ,对于空气负离子浓度而言 ,大于 30 0 0个·cm- 3为 1级 ,2 0 0 0~ 30 0 0个·cm- 3为 2级 ,15 0 0~ 2 0 0 0个·cm- 3为 3级 ,10 0 0~ 15 0 0个·cm- 3为 4级 ,4 0 0~ 10 0 0个·cm- 3为 5级 ,4 0 0个·cm- 3以下为 6级 ;所对应的空气负离子系数值 (p)及评价等级指数标准 (EISGFA)值则分别为 >0 8,0 7~ 0 8,0 6~ 0 7,0 5~ 0 6 ,0 4~ 0 5 ,<0 4和 >2 4 ,1 4~ 2 4 ,0 9~ 1 4 ,0 5~ 0 9,0 16~ 0 5 ,<0 16。本研究还根据空气负离子对人体的生物学效应将森林游憩区空气负离子浓度划分为三个区 ,低于 4 0 0个·cm- 3为临界浓度区 ,4 0 0~ 10 0 0个·cm- 3为允许浓度区 ,高于 10 0 0个·cm- 3为保健浓度区。利用上述评价模型及标准 ,对张家界国家森林公园主要景区空气负离子状况进行了评价。
Based on the summarization of the former aeronion assessment models, the article put forward the concept of aeroanion coefficient, established the assessment models of aeroanion coefficient(p) and forest aeroion(FCI). Besides, after analyzing the data of aeroanion concentration observed in 10 forestry recreational areas through the method of standard normal logarithm transformation, the article set up the standard grades of forest aeroion(SGFA) and evaluating index standard grades of forest aeroion(EISGFA). The values of SGFA(with the unit of entries·cm -3), p and EISGFA were divided into six grades, respectively, >3 000,2 000~3 000,1 500~2 000,1 000~1 500, 400~1 000, <400; >0.8,0.7~0.8,0.6~0.7,0.5~0.6,0.4~0.5,<0.4 and >2.4,1.4~2.4,0.9~1.4,0.5~0.9,0.16~0.5,<0.16 respectively。According to the biological effect of aeroanion to the body of human being, this article divided the value spectrum of SGFA into three sections, respectively, critical section (<400), allowable section (400~1 000) and hygienical section (>1 000). With the using of the standards and the indexes, the aeroanion status of the main sightseeing areas of Zhangjiajie Forestry Park was successfully evaluated.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2004年第1期36-40,共5页
Scientia Silvae Sinicae
基金
国家自然科学基金资助项目 (3 0 2 0 0 0 40 )
国家林业局资助项目(FR2 0 0 0 002)