期刊论文

中文

中国环境科学

1000-6923

2002

22

4

320-323

10.3321/j.issn:1000-6923.2002.04.009

国家林业局基金项目（FR2000-002）

本校为其他机构

利用在不同森林环境中测得的大量空气负离子浓度数据,采用标准对数正态变换法,制定出森林环境中空气负离子浓度的分级评价标准.将森林环境中空气负离子浓度水平分为6个等级,即大于3000个/cm3为Ⅰ级,2000～3000个/cm3为Ⅱ级,1500～2000个/cm3为Ⅲ级,1000～ 1500个/cm3为Ⅳ级,400～1000个/cm3为Ⅴ级,400个/cm3以下为Ⅵ级.利用该标准,对北京小龙门森林公园及广州流溪河国家森林公园主要景区空气负离子状况进行了评价.

This paper uses a vast amount of the mass data of aeroanion concentration mensurated in different forestsurroundings to establish the grades standard of the aeroanion through the method of standard normal logarithmtransformation. The standard divides the aeroanion concentration into six grades; that is, the first grade above 3000Entries/cm3, the second 2000~3000 Entries/cm3, the third 1500~2000 Entries/cm3, the fourth 1000~ 1500 Entries/cm3, the fifth 400~1000 Entries/cm3, and the last below 400 Entries/cm3. With application of the standard, the aeroanion status of the main scenic sports of Xi...