摘要
岩溶作用对大气CO2起到汇的作用,其量级的大小受岩溶水的排泄量及由岩溶作用产生的无机碳浓度两方面的影响。基于贵州茂兰国家级自然保护区板寨地下河监测站的监测数据,对岩溶碳汇过程及其影响因子进行了分析。结果表明,板寨地下河流域岩溶年碳汇量约为353tC,不同时间尺度的岩溶碳汇强度与流域的排泄量之间均存在良好的线性关系。因此,能否准确监测岩溶地下河的排泄量是岩溶碳汇估算的关键。由于岩溶区水循环季节变化幅度较大,具有实时监测功能的监测站在岩溶碳汇评估中显得十分必要。
The karst process is carbon sequestration for atmosphere CO2. Karst carbon sequestration （KCS） value depends on the discharge of karst catchment and inorganic carbon concentration of water body. Based on the data from the mornitoring station on Banzhai subterranean stream located in Maolan National Nature Reserve of Guizhou, the influcent factors of KCS have been analyzed. It shows that the KCS is about 353 t C per year in the catchment of Banzhai subterranean stream, and there is good liner relationship between KCS and discharge at different time scales. Therefore, how to mornitor the discharge accurately is the key to KCS estimation. And the stations with realtime monitoring function are very important for KCS calculation because of strong seasonal variability of karst water cycle.
出处
《气候变化研究进展》
CSCD
2011年第3期157-161,共5页
Climate Change Research
基金
中国地质调查局工作项目"中国岩溶碳汇动态评价"(1212011087122)
国家自然科学基金(41072192)
关键词
岩溶碳汇
监测
板寨地下河
流量
降水量
HCO3-
karst carbon sequestration
monitoring
Banzhai subterranean stream
discharge
rainfall
HCO3-
