Abstract: In this paper,three types of grasslands of temperate meadow grassland,temperate typical grassland and lowland meadow in Huihe Protected Area of Inner Mongolia were taken as examples. Air temperature,relative humidity,wind speed,light intensity,atmospheric particulate matter,air negative oxygen ion concentration and other indicators were measured for three consecutive months,and climatic comfortableness index was calculated to study the key environmental factors affecting the function of grassland to the wellness service industry. The results showed that the microclimate in the investigated grasslands,such as temperature,relative humidity,wind speed and light intensity,was suitable for human activities. The climatic comfortableness index of all types of grasslands was below 4.55,reaching the “very comfortable” level. The order of airborne negative oxygen ions is:Lowland meadow (1 770 cm^-3) > temperate typical grassland (1 731 cm^-3) > temperate meadow grassland (1 283 cm^-3) > Mongolian scotch pine forest (1 108 cm^-3) > urban road (560 cm^-3). The average daily PM_2.5ingrasslands was 10.6 μm·m^-3. The daily mean value of PM₁₀ was 14.8 μm·m^-3. All of them have reached the level of national level I standard and are suitable for grassland health activities. To sum up,this study concluded that grassland not only has health and nourishing function,but also has significant effects,among which lowland grassland has the best health and nourishing effect,followed by warm grassland and meadow grassland.

Key words: Grassland health, Environmental microclimate, Climate comfort, Air quality

摘要： 本文以内蒙古辉河保护区的草甸草原、温性草原、低地草甸3种草地类型为例，连续3个月测量气温、相对湿度、风速、光照强度、空气颗粒物、空气负氧离子浓度等指标，同时计算气候舒适度，来研究影响草原康养功能的关键环境因子。结果表明：气温、相对湿度、风速和光照强度等草原环境小气候适宜人类活动。各草地类型气候舒适度指数均在4.55以下，达到“很舒适”等级。空气负氧离子高低顺序为：低地草甸(1 770 个·cm^-3) ＞温性草原(1 731 个·cm^-3)＞温性草甸草原(1 283 个·cm^-3)＞樟子松森林(1 108 个·cm^-3)＞城市道路(560 个·cm^-3)，草原环境的PM_2.5日均值为10.6 μm·m^-3，PM₁₀的日均值为14.8 μm·m^-3，均达到国家I级标准水平，适宜进行草原康养活动。综上，本研究认为草原不仅具有康养功能，而且效果显著，其中低地草甸的康养效果最好，其次为温性草原和草甸草原。

关键词: 草原康养, 环境小气候, 气候舒适度, 空气质量