短时间尺度下岩溶泉碳汇效应研究——以重庆金佛山水房泉为例  

Study on Carbon Sink Effect in Karstic Spring of Short Time Scale——A case of the Shuifang Spring in Jinfo Mountain,Chongqing

作　　者：查小森 谢世友[1,2] 李林立[1,2,3] 

机构地区：[1]西南大学地理科学学院,重庆400715 [2]西南大学三峡库区生态环境教育部重点实验室,重庆400715 [3]西南大学岩溶环境与石漠化治理研究所,重庆400715

出　　处：《地下水》2015年第2期42-45,共4页Ground water

基　　金：国家科技支撑计划课题(2011BAC09B01;2006BAC01A16);重庆市自然科学基金重点项目(CSTC2009BA0002)资助

摘　　要：通过对金佛山水房泉的离子含量、电导率、水位等参数进行监测,采用水化学—流量法计算出水房泉一个完整水文年的月碳汇通量。结果显示,水房泉雨季碳汇通量远大于旱季,碳汇通量最大值出现在7月,最小值出现在1月。月碳汇通量与月降雨量和月径流量之间存在很好的同步关系。水房泉HCO3-的含量受温度、降雨、流量以及表层土壤CO2等因素综合影响,且月碳汇通量的最值与HCO3-含量的最值在时间上存在很大的差异。降雨量是控制岩溶地下水碳汇通量的绝对主导因素。相比于年尺度下大流域的碳汇估算,短时间尺度下小流域的碳汇计算更加准确。另外,分析地下水流量、气候变化等因素对岩溶碳汇的影响,对于水化学—流量法的准确运用以及岩溶碳汇机制的深入研究也有十分重要的意义。By monitoring the parameters like Ion content, conductivity and water level of Shuifang Spring, monthly flux es-timation of Carbon Sink in one hydrological year is calculated by means of water chemical-runoff method in this study. And the results show that the monthly carbon sink of Shuifang Spring is maximum in July and minimum in Jan. . There is a good synchrorelationship among the monthly carbon sink and monthly rainfall runoff, monthly runoff. The bicarbonate concentration of the Shuifang Spring synthetically influenced by air temperature, rainfall, runoff and soil CO2 , and the extremum of carbon sink and bicarbonate concentration has a big difference in terms of time. The rainfall is the dominant factor for controlling the carbon sink of karst groundwater. Through this study it is found that the estimate of carbon sink in small watersheds by water chemical-runoff method is more accurate than large watersheds. In addition, analysing the impact of groundwater flow, cli-mate change and other factors on the carbon sink for karstification may give a positive influence to the accurate application of the water chemical-runoff method and the further research on carbon sink for karstification.

关 键 词：岩溶泉 碳汇效应 碳汇通量 水化学 流量法 

分 类 号：P641.51[天文地球—地质矿产勘探]