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桂林典型岩溶区土壤CO2通量及其δ13CCO2季节性特征

吴夏 潘谋成 殷建军 汪智军 朱晓燕 杨会 曹建华

吴夏, 潘谋成, 殷建军, 汪智军, 朱晓燕, 杨会, 曹建华. 桂林典型岩溶区土壤CO2通量及其δ13CCO2季节性特征[J]. 中国岩溶, 2021, 40(4): 592-599.
引用本文: 吴夏, 潘谋成, 殷建军, 汪智军, 朱晓燕, 杨会, 曹建华. 桂林典型岩溶区土壤CO2通量及其δ13CCO2季节性特征[J]. 中国岩溶, 2021, 40(4): 592-599.
WU Xia, PAN Moucheng, YIN Jianjun, WANG Zhijun, ZHU Xiaoyan, YANG Hui, CAO Jianhua. Seasonal variation characteristics of soil respiration release and its isotopic composition in typical karst area, Guilin[J]. CARSOLOGICA SINICA, 2021, 40(4): 592-599.
Citation: WU Xia, PAN Moucheng, YIN Jianjun, WANG Zhijun, ZHU Xiaoyan, YANG Hui, CAO Jianhua. Seasonal variation characteristics of soil respiration release and its isotopic composition in typical karst area, Guilin[J]. CARSOLOGICA SINICA, 2021, 40(4): 592-599.

桂林典型岩溶区土壤CO2通量及其δ13CCO2季节性特征

基金项目: 国家自然科学基金项目(41701235; 41530316; 41501222);广西自然科学基金项目(2018GXNSFAA281320;2018GXNSFBA138042;2018GXNSFBA050004); 广西重大科技创新基地建设项目(2018-242-Z01);中国地质科学院基本科研业务费(2020006)

Seasonal variation characteristics of soil respiration release and its isotopic composition in typical karst area, Guilin

  • 摘要: 通过选用静态暗箱/气相色谱法,探讨桂林毛村典型岩溶区土壤CO2通量及其δ13C CO2的季节性演变规律,旨在揭示野外条件下土壤CO2及其δ13CCO2对环境因子变化的影响机制。同时野外原位监测大气温度、压强、土壤温度等环境参数来明确环境因子对土壤CO2的影响过程。结果表明:岩溶区土壤CO2通量及其δ13C CO2在季节时间尺度上呈现出相似的季节性变化规律,夏季土壤CO2通量较高,土壤δ13C CO2偏轻,且土壤CO2通量与土壤温度呈显著正相关关系。此外,夏季10 cm处土壤CO2通量明显高于0 cm,且该处δ13C CO2也偏轻于0 cm;冬季10 cm处土壤CO2通量与0 cm相差并不明显,而该处δ13C CO2却仍是偏轻于0 cm。在日时间尺度上10 cm土壤δ13C CO2明显偏轻于0 cm。

     

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  • 发布日期:  2021-08-25

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