织金洞CO_(2)时空分布特征及其主要影响因素分析  

Spatiotemporal mutation characteristics of Zhijin Cave CO_(2) and its main influencing factors

作　　者：张弘智 罗书文 吴克华 ZHANG Hongzhi;LUO Shuwen;WU Kehua(Guizhou Institute of Mountain Resources,Guiyang,Guizhou 550000,China;Guizhou Cave Engineering Center Co.,Ltd,Guiyang,Guizhou 550000,China)

机构地区：[1]贵州省山地资源研究所,贵州贵阳550000 [2]贵州省洞穴工程中心有限公司,贵州贵阳550000

出　　处：《贵州师范大学学报（自然科学版）》2024年第5期20-27,共8页Journal of Guizhou Normal University：Natural Sciences

基　　金：国家十三五重点研发计划课题(2016YFC0502606);贵州省科技计划项目(黔科合支撑[2021]一般379);贵州省2016年度高层次创新人才项目([2016]21);贵州科学院创新人才团队能力提升工程([2019]08)。

摘　　要：CO_(2)作为洞穴环境重要指标,在旅游洞穴空气环境质量调控和次生化学沉积景观保护方面备受关注。以织金洞为研究对象,基于物联网技术开展洞穴CO_(2)浓度和温度的高频监测,进一步反演了织金洞CO_(2)时空分布特征及其与主要影响因素的关系。结果表明:1)洞穴吸入期洞穴CO_(2)变异与CO_(2)浓度差、气流振荡和烟囱效应有关,而洞穴呼出期洞穴CO_(2)变异与洞穴通风的急剧转换有关;2)旅游旺季洞穴CO_(2)更易富集于织金洞前半段,此时洞穴CO_(2)变异主要发生在无游客的夜间或旅游活动减弱阶段;3)织金洞规模较大的洞厅有利于CO_(2)消散,当游客较多时,洞内CO_(2)变异无明显空间异质性。研究结论将为织金洞等相关旅游洞穴的环境保护与运营管理提供理论参考。As an important indicator of cave environment,CO_(2) has attracted much attention in the regulation of air environment quality and the protection of secondary chemical deposition landscape in tourist caves.This paper takes Zhijin Cave as the research object,and carries out the high-frequency monitoring of cave CO_(2) concentration and temperature based on the Internet of Things technology,and further reverses the spatial and temporal variation characteristics of Zhijin Cave CO_(2) and its relationship with main influencing factors.The results show that:1)The variation of cave CO_(2) during the cave inhalation period is related to the difference in CO_(2) concentration,airflow oscillation,and chimney effect,while the variation of cave CO_(2) during the cave exhalation period is related to the sharp transition of cave ventilation;2)In the peak season,cave CO_(2) is more likely to be enriched in the first half of Zhijin Cave,when cave CO_(2) mutation mainly occurs in the night without tourists or the weakened tourist activity in the stage;3)The large cave hall of Zhijin Cave is conducive to CO_(2) dissipation,and there is no obvious spatial heterogeneity in the CO_(2) variation in the cave.The research conclusion will provide theoretical reference for the environmental protection and operation management of Zhijin Cave and other related tourist caves.

关 键 词：时空变异 旅游活动 CO_(2)浓度差 织金洞 

分 类 号：X83[环境科学与工程—环境工程]