中国地理科学 ›› 2016, Vol. 26 ›› Issue (3): 295-303.doi: 10.1007/s11769-016-0809-y

• 论文 • 上一篇    下一篇

Distribution and Accumulation of Soil Carbon in Temperate Wetland, Northeast China

LYU Mingzhi1,2, SHENG Lianxi1,2, ZHANG Zhongsheng3, ZHANG Li4   

  1. 1. Northeast Normal University, Changchun 130024, China;
    2. State Environment Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, Changchun 130117, China;
    3. Key Laboratory of Wetland Ecology and Environment, Institute of Northeast Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;
    4. Everglades Wetland Research Park, Florida Gulf Coast University, Naples FL 34112, U.S.A.
  • 收稿日期:2015-11-06 修回日期:2016-03-02 出版日期:2016-06-27 发布日期:2016-05-09
  • 通讯作者: SHENG Lianxi E-mail:shenglx@nenu.edu.cn
  • 基金资助:

    Under the auspices of National Natural Science Foundation of China (No. 41471081), Scientific Research Foundation of Graduate School of Northeast Normal University (No. 12SSXT149)

Distribution and Accumulation of Soil Carbon in Temperate Wetland, Northeast China

LYU Mingzhi1,2, SHENG Lianxi1,2, ZHANG Zhongsheng3, ZHANG Li4   

  1. 1. Northeast Normal University, Changchun 130024, China;
    2. State Environment Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, Changchun 130117, China;
    3. Key Laboratory of Wetland Ecology and Environment, Institute of Northeast Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;
    4. Everglades Wetland Research Park, Florida Gulf Coast University, Naples FL 34112, U.S.A.
  • Received:2015-11-06 Revised:2016-03-02 Online:2016-06-27 Published:2016-05-09
  • Contact: SHENG Lianxi E-mail:shenglx@nenu.edu.cn
  • Supported by:

    Under the auspices of National Natural Science Foundation of China (No. 41471081), Scientific Research Foundation of Graduate School of Northeast Normal University (No. 12SSXT149)

摘要:

Estimating carbon sequestration and nutrient accumulation rates in Northeast China are important to assess wetlands function as carbon sink buffering greenhouse gas increasing in North Asia. The objectives of this study were to estimate accreting rates of carbon and nutrients in typical temperate wetlands. Results indicated that average soil organic carbon (SOC), total nitrogen (TN) and total phosphorus (TP) contents were 37.81%, 1.59% and 0.08% in peatlands, 5.33%, 0.25% and 0.05% in marshes, 2.92%, 0.27% and 0.10% in marshy meadows, respectively. Chronologies reconstructed by 210Pb in the present work were acceptable and reliable, and the average time to yield 0-40 cm depth sediment cores was 150 years. Average carbon sequestration rate (Carbonsq), nitrogen and phosphorus accumulation rates were 219.4 g C/(m2·yr), 9.16 g N/(m2·yr) and 0.46 g P/(m2·yr) for peatland; 57.13 g C/(m2·yr), 5.42 g N/(m2·yr) and 2.16 g P/(m2·yr) for marshy meadow; 78.35 g C/(m2·yr), 8.70 g N/(m2·yr) and 0.71 g P/(m2·yr) for marshy; respectively. Positive relations existed between Carbonsq with nitrogen and precipitations, indicating that Carbonsq might be strengthened in future climate scenarios.

关键词: carbon sequestration, nutrients accumulation, temperate wetlands, Northeast China

Abstract:

Estimating carbon sequestration and nutrient accumulation rates in Northeast China are important to assess wetlands function as carbon sink buffering greenhouse gas increasing in North Asia. The objectives of this study were to estimate accreting rates of carbon and nutrients in typical temperate wetlands. Results indicated that average soil organic carbon (SOC), total nitrogen (TN) and total phosphorus (TP) contents were 37.81%, 1.59% and 0.08% in peatlands, 5.33%, 0.25% and 0.05% in marshes, 2.92%, 0.27% and 0.10% in marshy meadows, respectively. Chronologies reconstructed by 210Pb in the present work were acceptable and reliable, and the average time to yield 0-40 cm depth sediment cores was 150 years. Average carbon sequestration rate (Carbonsq), nitrogen and phosphorus accumulation rates were 219.4 g C/(m2·yr), 9.16 g N/(m2·yr) and 0.46 g P/(m2·yr) for peatland; 57.13 g C/(m2·yr), 5.42 g N/(m2·yr) and 2.16 g P/(m2·yr) for marshy meadow; 78.35 g C/(m2·yr), 8.70 g N/(m2·yr) and 0.71 g P/(m2·yr) for marshy; respectively. Positive relations existed between Carbonsq with nitrogen and precipitations, indicating that Carbonsq might be strengthened in future climate scenarios.

Key words: carbon sequestration, nutrients accumulation, temperate wetlands, Northeast China