其他题名Dynamics of soil CO_2 concentration and CO_2 efflux in non-growing season of the Yellow River Delta wetland
王先鹤1; 王秀君2; 韩广轩3
; 王钧漪2; 宋维民3; 尤再进1发表期刊生态学杂志
ISSN1000-4890
2018-09-15
卷号37期号:09页码:2698-2706
关键词土壤CO2浓度地表CO2通量非生长季土壤呼吸模型黄河三角洲湿地soil CO2 concentrationCO2 effluxnon-growing seasonsoil respiration modelYellow Ｒiver Delta wetland
研究领域环境科学
DOI10.13292/j.1000-4890.201809.005
产权排序(1)鲁东大学土木工程学院
; (2)北京师范大学全球变化与地球系统科学研究院; (3)中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室
作者部门海岸带环境过程实验室
英文摘要To address the issue of lacking data in the non-growing season,we conducted an experiment in a coastal wetland of the Yellow River Delta from October 29,2016 to February 9, 2017,by continuously monitoring soil CO_2 concentration and temperature at different soil depths (15,30,and 45 cm). In order to understand the dynamics of CO_2 efflux and to assess its relationship with soil CO_2 concentration,we measured CO_2 efflux in March 3-5 and March 16-18, 2017. The results showed that soil CO_2 concentration significantly increased with the increases of soil depth. At the same depth,soil CO_2 concentration was significantly higher in autumn than in winter. There was strong diurnal variation in CO_2 efflux,which was consistent with the variation of surface soil temperature. The temperature sensitivity coefficients (Q10) of soil respiration were 3.49-3.74. There was a significant positive correlation between CO_2 efflux and soil CO_2 concentration or soil temperature. Using the derived relationships,we estimated CO_2 efflux for the nongrowing season,and found that the three models produced similar magnitudes and variations, i.e.,0.44 to 0.57,-0.18 to 0.01 and 0.09 to 0.13 μmol·m~(-2)·s~(-1) for the maximum,the minimum and the mean values,respectively. Our results demonstrated the effects of soil carbon trans- formation in non-growing season on carbon cycling of the Yellow River Delta wetland.
中文摘要土壤碳通量是全年性的过程,非生长季土壤碳通量是陆地碳循环的重要组成部分。针对非生长季地上地下CO_2动态变化研究相对缺乏这一现象,对黄河三角洲湿地不同深度土壤CO_2浓度及温度动态变化进行了连续3个月的监测;为揭示该地区地表CO_2通量与地下CO_2浓度变化之间的关系,对地表CO_2通量、土壤CO_2浓度及温度进行了两次同步测定。结果表明:随着土层深度的增加,土壤CO_2浓度显著升高;相同深度下,秋季的土壤CO_2浓度明显高于冬季。地表CO_2通量和地表温度具有相似的日变化规律,二者呈极显著正相关关系,土壤呼吸温度敏感性系数(Q10)为3.49~3.74。地表CO_2通量与土壤CO_2浓度、土壤温度均存在极显著线性或指数关系,利用其经验模型对黄河三角洲湿地土壤秋冬季碳通量进行了估算,通过比较发现,所有模型拟合结果在季节变化上相近:最大值为0.44~0.57μmol·m~(-2)·s~(-1),最小值为-0.18~0.01μmol·m~(-2)·s~(-1),平均值为0.09~0.12μmol·m~(-2)·s~(-1)。本研究揭示了非生长季土壤碳的转化过程对滨海湿地碳循环的潜在影响。
资助机构国家重点基础研究发展计划项目#2013CB956602; 山东《泰山****》海外特聘专家人才工程#TSHW201502050
收录类别CSCD
语种中文
CSCD记录号CSCD:6328554
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24675
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
通讯作者王秀君作者单位1.鲁东大学土木工程学院;
2.北京师范大学全球变化与地球系统科学研究院;
3.中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室
推荐引用方式
GB/T 7714王先鹤,王秀君,韩广轩,等. 黄河三角洲湿地非生长季土壤CO_2浓度及地表CO_2通量的动态变化[J]. 生态学杂志,2018,37(09):2698-2706.
APA王先鹤,王秀君,韩广轩,王钧漪,宋维民,&尤再进.(2018).黄河三角洲湿地非生长季土壤CO_2浓度及地表CO_2通量的动态变化.生态学杂志,37(09),2698-2706.
MLA王先鹤,et al."黄河三角洲湿地非生长季土壤CO_2浓度及地表CO_2通量的动态变化".生态学杂志 37.09(2018):2698-2706.
PDF全文下载地址:
点我下载PDF
