游客旅游活动对广安市响水滩水库水质影响的时间序列分析

Time Series Analysis on the Influence of Tourism Activities on Water Quality of Xiangshuitan Reservoir in Guang'an City

近些年广安市响水滩水库旅游开发力度不断加强,给水库水体水质带来的影响越来越明显.为了评估游客旅游活动对其水体水质变化的影响,本研究通过选取分析响水滩水库3个不同功能区5个水质指标监测数据,并比较分析短期一周内水质监测数据、长期水质数据与游客量关系,以及2001—2012年的游客数量与水质综合污染指数关系.结果表明1)周末的水质数据明显高于周中,二者的差异明显.水温与pH值的差异较小,而溶解氧(DO)、电导率(EC)和浑浊度(TUR)之间有明显的差异;2)随着周末游客的增多,周末水库污水排放量超过一周内其他时间的总量,EC值升高;3)水库的DO、EC和TUR与游客数量没有明显关联;4)水质综合污染指数与旅游人数呈现相同波动变化趋势.结论游客短期时间内的旅游活动对水库水质产生影响,而长时间内的旅游活动对水库水质的影响并不显著.研究结果旨在为该库区生态环境保护提供科学依据.

In recent years,the tourism development of Xiangshuitan Reservoir in Guang'an City has been continuously promoted,which has caused obvious adverse influences on the water quality of the reservoir.In order to evaluate the influences of tourism activities on the water quality,the monitoring data of five water quality indexes in three different functional areas of Xiangshuitan Reservoir are selected to be analyzed,and the relationship between water quality monitoring data in a short week,long-term water quality data and tourists number,the relationship between the number of tourists and the comprehensive pollution index of water quality from 2001 to 2012 are comparatively analyzed.The results showed that:1)There were obvious differences in the water quality of workday and the weekend,the difference between the water temperature and pH value of the reservoir was small,while the difference among dissolved oxygen(DO),conductivity(EC)and turbidity(TUR)were significant;2)With the increase of weekend visitors,the total amount of sewage discharged into the reservoir in the weekend exceeded the total amount of the weekdays,the value of EC increased;3)DO,EC and TUR have no significant correlation with the increase of tourists;4)The comprehensive pollution index of water quality showed the same fluctuation trend with the number of tourists.Conclusion:Tourists'short-term tourism activities had an impact on the water quality,while the impact of long-term tourism activities on the water quality was not significant.The research results are aimed to provide scientific basis for the protection of ecological environment in the reservoir area.