摘要
对比和拟合分析1989年、2011-2013年和2015-2016年织金洞内气候环境因子监测数据以及游客量数据发现:织金洞自开发初期至今,洞内CO_2浓度和温度水平增高明显,增加幅度分别可达1 000ppm和2~3℃,而2011-2013年与2015-2016年间CO_2差值最大达465ppm。洞内环境变化的最主要因素是旅游活动和人工光源;游客量从1985年的不足5万人增至2015年的59.457 1万人,洞内CO_2浓度总体上呈现出随着时间增加而不断增高的趋势;各年份气温差距不大,但总体上仍展现出逐年降低的趋势,湿度除2011年外,差距并不明显;人工光源产生的温度与环境温度最大温差可达33℃,湿度和周边环境的湿度最大差值可达66.7%。
The Zhijin cave is located in the northeast of Zhijin county in western Guizhou Province.The area of Zhijin cave world geological park is 307km^2,and its central scenic spot lies at the intersection of the Liuchong river and Sancha river,where developed the Huangchun dam（T1y^2）Formation of Lower Triassic Yelang Group（T1y）.Because of the magnificent and unique landscape,the Zhijin cave has been honored with national geological park in 2004 and the world geological park in 2015.From January 2015 to May 2016,monthly monitoring has been conducted to the temperature,air CO2 concentration,air pressure,air humidity and wind speed in this cave.The cave air CO2 concentration was measured by Telaire-7001 portable infrared CO2 instrument,of which the resolution and the range are 1ppm and t 0-10,000 ppm,respectively.The humidity,temperature,air pressure of cave air and wind speed in the tunnel were observed by the Kestrel4500 anemometer.The data on visitor amount are provided by the Zhijin Cave Management Bureau.The previous research data are collected from the literature and compared with the new monitoring data point by point.Then this work analyzes the change of the environment and the number of tourists from the initial stage of opening of the Zhijin cave to the present and the relationship between the environment and the visitor amount and the influence of artificial light sources on the environment inside the cave.Thus the impact of human activities on environmental factors in the cave are quantified,and the main factors affecting the environment inside the cave are identified,which could provide a scientific basis for protection of the cave environment and landscape.The results show that the CO2 concentration and temperature level have been increased significantly since the initial stage of opening of the Zhijin cave,with amplitudes reaching 1,000 ppm and 2-3℃,respectively.The maximum CO2 difference was up to 465 ppm between 2011-2013 and 2015-2016.The main factors of the environmental change are tourism activities and artificial light.The amount of tourists has increased from less than 50 thousand in 1985 to 594.571 thousand in 2015,leading to increase of the CO2 concentration with time.The annual temperature difference was not large,but the overall trend was still decreasing year by year and the gap of humidity was not obviously except 2011.The maximum temperature difference between surrounding environment and artificial lights can reach 33℃,and the maximum humidity difference between the cave interior and surrounding environment is up to 66.7%.
出处
《中国岩溶》
CAS
CSCD
北大核心
2017年第4期591-597,共7页
Carsologica Sinica
基金
国家自然科学基金地区项目"岩溶洞穴CO2迁移变化机制及对洞穴岩溶环境的影响研究"(41361081)
贵州省科技计划"贵州省洞穴调查数据技术服务"(黔科合G字[2014]4004-2号)
关键词
CO2浓度
游客量
年际变化
相关性分析
织金洞
CO2 concentration, tourist volume, inter-annual variation, correlation analysis, Zhijin cave
