2012—2013年重庆雪玉洞洞穴系统碳循环特征
Carbon Cycle Characteristics in Karst Cave System of Xueyu Cave from 2012to 2013
查看参考文献40篇
文摘
|
重庆雪玉洞洞内CO_2浓度之高,在国内外皆罕见,但此洞穴系统碳循环特征及控制因素仍不清楚.利用土壤二氧化碳分压(P_(CO_2-soil))、洞内大气二氧化碳分压(P_(CO_2-cave))、地下河水二氧化碳分压(P_(CO_2-eq))、方解石饱和指数(SIc)、地下河水溶解无机碳同位素(δ~(13) CDIC)等指标来研究雪玉洞洞内CO_2浓度变化、控制因素以及地下河对洞内碳循环的影响.结果表明:雪玉洞上覆P_(CO_2-soil)雨季高,旱季低;降雨量是控制上覆P_(CO_2-soil)的重要因子.雪玉洞P_(CO_2-cave)变化规律明显,暖季高,冷季低;温度变化导致洞内外气流频繁交换是P_(CO_2-cave)突变的重要原因,地下河水CO_2脱气能够在短时间内让P_(CO_2-cave)上升到较高值.雨季由于土壤CO_2效应,地下河水具有低SIc、高P_(CO_2-eq)特性,矿化度较高,并且部分月份地下河水具有溶蚀性;旱季由于土壤CO_2效应及降雨较少,地下河水呈现高SIc、低P_(CO_2-eq)特性,矿化度较低,以沉积为主. |
其他语种文摘
|
The high CO_2 concentration in Xueyue cave,Chongqing,is rare at home and abroad.However,the circulation characteristics of carbon and its controlling factors in this cave system remain unknown.P_(CO_2-soil),P_(CO_2-cave),P_(CO_2-eq),SIc,and δ~(13) CDIC of subterranean stream were analyzed to investigate the laws of CO_2 concentration variations in Xueyu cave and its contolling factors,as well as the impact on carbon cycle in this cave by subterranean stream.It is found that soil P_(CO_2) mainly controlled by precipitation in subtropical areas was higher in rainy season than that of dry season.Cave air P_(CO_2) exhibited seasonal variations, high cave air P_(CO_2) typically occurred during warm periods,and low cave air P_(CO_2) were typical of cold periods.It was ventilation driven by the temperature difference between cave and outside air that resulted in a sharp transition of cave air P_(CO_2).Meanwhile, cave air P_(CO_2) could rise to high level in a short period of time because of CO_2 degassing from subterranean stream.Due to soil CO_2 effect,groundwater became more mineralized water with low SIc and high water P_(CO_2-eq),and dissolution in some months in rainy season.With the reduction of soil CO_2 and precipitation,groundwater had low degree of mineralization with high SIc and low water P_(CO_2-eq)in dry season. |
来源
|
地球科学
,2016,41(8):1424-1434 【核心库】
|
DOI
|
10.3799/dqkx.2016.113
|
关键词
|
岩溶洞穴系统
;
碳循环
;
二氧化碳分压
;
方解石饱和指数
;
雪玉洞
;
气候变化
|
地址
|
1.
中国地质科学院岩溶地质研究所, 国土资源部广西岩溶动力学重点实验室, 广西, 桂林, 541004
2.
西南大学地理科学学院, 重庆, 400715
3.
中国科学院水利部成都山地灾害与环境研究所, 四川, 成都, 610041
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1000-2383 |
学科
|
地质学 |
基金
|
国家自然科学基金项目
;
中国地质科学院基本科研业务费专项项目
;
国土资源部中国地质调查局项目
;
中央高校基本科研业务费专项资金
;
重庆市院士专项项目
|
文献收藏号
|
CSCD:5778541
|
参考文献 共
40
共2页
|
1.
Amundson R. The Chemistry and Mineralogy of a CO_2-Rich Travertine Depositing Spring in the California Coast Range.
Geochimica et Cosmochimica Acta,1987,51(11):2883-2890
|
被引
2
次
|
|
|
|
2.
Appelo C A J.
Geochemistry,Groundwater and Pollution,2005:29-50
|
被引
1
次
|
|
|
|
3.
Baldini J U L. Very High-Frequency and Seasonal Cave Atmosphere PCO_2 Variability:Implications for Stalagmite Growth and Oxygen Isotope-Based Paleoclimate Records.
Earth and Planetary Science Letters,2008,272(1):118-129
|
被引
24
次
|
|
|
|
4.
Boucot A J. A Critique of Phanerozoic Climatic Models Involving Changes in the CO_2 Content of the Atmosphere.
Earth-Science Reviews,2001,56(1/4):1-159
|
被引
12
次
|
|
|
|
5.
Bourges F. Microclimates of l'Aven d'Orgnac and other French Limestone Caves(Chauvet,Esparros,Marsoulas).
International Journal Climatology,2006,26(12):1651-1670
|
被引
2
次
|
|
|
|
6.
Cuezva S. Short-Term CO_2(g)Exchange between a Shallow Karstic Cavity and the External Atmosphere during Summer:Role of the Surface Soil Layer.
Atmospheric Environment,2011,45(7):1418-1427
|
被引
10
次
|
|
|
|
7.
Davidson E A. Temperature Sensitivity of Soil Carbon Decomposition and Feedbacks to Climate Change.
Nature,2006,440(7081):165-173
|
被引
476
次
|
|
|
|
8.
Dreybrodt W. Climatic Dependence of Stable Carbon and Oxygen Isotope Signals Recorded in Speleothems:From Soil Water to Speleothem Calcite.
Geochimica et Cosmochimica Acta,2011,75(3):734-752
|
被引
13
次
|
|
|
|
9.
Faimon J. Anthropogenic CO_2-Flux into Cave Atmosphere and Its Environmental Impact: A Case Study in the CisarskaCave (Moravian Karst,Czech Republic).
Science of the Total Environment,2006,369(1/3):231-245
|
被引
8
次
|
|
|
|
10.
Feng W. Oxygen Isotopic Fractionation between Drip Water and Speleothem Calcite:A 10-Year Monitoring Study,Central Texas,USA.
Chemical Geology,2012,304/305(3):53-67
|
被引
3
次
|
|
|
|
11.
Ford D.
Karst Hydrogeology and Geomorphology,2007:103-144
|
被引
2
次
|
|
|
|
12.
Friend A D. Fluxnet and Modelling the Global Carbon Cycle.
Global Change Biology,2007,13(3):610-633
|
被引
13
次
|
|
|
|
13.
Frisia S. Carbon Mass-Balance Modelling and Carbon Isotope Exchange Processes in Dynamic Caves.
Geochimica et Cosmochimica Acta,2011,75(2):380-400
|
被引
21
次
|
|
|
|
14.
Hess J W. Groundwater Geochemistry of the Carbonate Karst Aquifer,Southcentral Kentucky, USA.
Applied Geochemistry,1993,8(2):189-204
|
被引
8
次
|
|
|
|
15.
Knorr W. Long-Term Sensitivity of Soil Carbon Turnover to Warming.
Nature,2005,433(7023):298-301
|
被引
105
次
|
|
|
|
16.
Kowalczk A J. Cave Air Ventilation and CO_2 Outgassing by Radon-222 Modeling:How Fast Do Caves Breathe?.
Earth and Planetary Science Letters,2010,289(1/2):209-219
|
被引
16
次
|
|
|
|
17.
Liu Z. Significance of Carbon Sink Produced by H_2O-Carbonate-CO_2-Aquatic Phototroph Interaction on Land.
Science Bulletin,2015,60(2):182-191
|
被引
15
次
|
|
|
|
18.
Liu Z. Seasonal,Diurnal and Storm-Scale Hydrochemical Variations of Typical Epikarst Springs in Subtropical Karst Areas of SW China: Soil CO_2 and Dilution Effects.
Journal of Hydrology,2007,337(1/2):207-223
|
被引
24
次
|
|
|
|
19.
Mandi'c M. Concentration and Stable Carbon Isotopic Composition of CO_2 in Cave Air of Postojnska Jama,Slovenia.
International Journal of Speleology,2013,42(3):279-287
|
被引
7
次
|
|
|
|
20.
Milanolo S. Analysis of Carbon Dioxide Variations in the Atmosphere of Srednja Bijambarska Cave,Bosnia and Herzegovina.
Boundary-Layer Meteorology,2009,131(3):479-493
|
被引
14
次
|
|
|
|
|