岩溶洞穴负离子空间分布特征与环境关系分析:以天缘洞与水帘洞为例

Analysis of Relationship between Spatial Distribution of Negative Ions in Karst Caves and Environment:in Case of Tianyuan Cave and Shuilian Cave

空气负离子被誉为"空气维生素",其浓度被列为衡量空气质量好坏的一个重要指标,对于空气污染物降解与人类健康有巨大的促进作用。文章使用DLY-3G232型空气离子测量仪对红果树景区的天缘洞与水帘洞的负离子浓度及洞穴环境进行监测,并通过GIS工具及统计分析方法,对监测数据进行分析。结果表明:天缘洞与水帘洞内负离子均高度富集在水体以及部分低洼处,其中,水帘洞瀑布处负离子浓度最高,最高值达到34 000个/cm^3;洞外负离子浓度较低,最低值只有630个/cm^3;负离子的产生与富集,与水环境及气流交换共同作用形成的不同洞穴环境有关系,但不同的洞道系统,其相关性也有差异;CO2与负离子的形成与赋存可能没有直接关系,两者可能是易受气流交换、洞穴封闭程度等影响的个体。

Air negative ion is known as the ＂air vitamin＂. The concentration of air negative ion is listed as an important indicator of air quality and is extremely beneficial to promote the degradation of air contaminants and human health. Cave environment is monitored in Tianyuan Cave and Shuilian Cave in Hongguoshu scenic spot by DLY-3 G232 air ion counter. Analyzing the concentration of negative ion by statistical analysis method and GIS tool, the results showed that negative ions are highly enriched around the pool and the low-lying area in Tianyuan and Shuilian Cave. The negative ion concentration which is the highest around waterfall in Shuilian Cave, reached 34 000 ions/cm3; the concentration of negative ion is the lowest in outside,only 630 ions/cm3. The generation and enrichment of negative ion are related to the different caves environment formed by the interaction of water environment and air flow exchange. However, the correlation between different cave systems is also different. The formation and occurrence of negative ion may not be directly related with CO2. They are individuals that are susceptible to air exchange, cave closures et al.