To study the variation of aero-anion concentration in forest recreational areas, the concentrations of aero-ion were measured under different vegetation types in Guilin National forest Park.
在桂林国家森林公园选择不同的植被群落类型进行空气离子浓度监测，研究森林游憩区空气负离子浓度水平变化。
Studies, develops and manages forest areas to maintain commercial and recreational USES, conserve flora and fauna, and protect against fire, pests and diseases.
研究、开发并管理森林地区以用于商业和娱乐休闲，保护动植物，预防火灾，病虫灾害。
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