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Volume 34 Issue 3
May  2015
Article Contents

Citation:

Diurnal change of soil carbon flux of island forests:A case study in Beichangshan Island

  • Received Date: 2014-04-18
    Accepted Date: 2014-06-10
  • By employing the LI-8100 CO2 flux automatic monitoring system (LI-COR Inc.,Lincoln,NE,USA),this paper measured the diurnal changes of the soil carbon flux in the artificial plantations on the Beichangshan Island of Shandong Province.The diurnal changes of soil carbon flux and its environmental factors such as temperature and water were analyzed.The results indicated that soil carbon flux appeared single diurnal pattern,with the peaks presented at about 14:30 and the lowest presented at about 06:00.The diurnal average of soil carbon flux ranged from 1.835 mol/(m2s) to 14.475 mol/(m2s).Significant relationships were found between soil respiration rate and soil temperature (10 cm),which could be best described by exponential equations (R2=0.492-0.702, P0.05).The Q10 value was based on the exponential correlations,which represented the sensitivity of soil respiration to temperature. Its values of Robinia pseudoacacia in May, Pinus thunbergii in May, Robinia pseudoacacia in Aug, Pinus thunbergii in Aug were 1.448,1.301,3.254,3.445,respectively.There were exponential correlations (R2=0.689,P0.05),quadratic correlations (R2=0.819,P0.05) and linear correlations(R2=0.363-0.601,P0.05)between respiration rate and soil moisture (0~10 cm).Owing to the soil moisture condition,the soil moisture in May had more influence on soil carbon flux than that in August.On the whole,the important regulative factors to soil carbon flux were soil temperature (10 cm)and soil moisture (0~10 cm),and its combined effect could account for more than 73.1% of the soil carbon flux changes on the Beichangshan Island(R2=0.73-0.91,P0.05).
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  • [1] 杨金艳,王传宽.土壤水热条件对东北森林土壤表面CO2通量的影响[J].植物生态学报,2006,30(2):286-294.[3]骆亦其,周旭辉.土壤呼吸与环境[M].姜丽芬,译.北京:高等教育出版社,2007:40-50.[4]姜 艳,王 兵,汪玉如,等.亚热带林分土壤呼吸及其与土壤温湿度关系的模型模拟[J].应用生态学报,2010,21(7):1641-1648.[5]刘 颖,韩士杰,胡艳玲,等.土壤温度和湿度对长白松林土壤呼吸速率的影响[J].应用生态学报,2005,16(9):1581-1585.[6]陈妮娜,关德新,金昌杰,等.科尔沁草甸草地土壤呼吸特征[J].中国草地学报,2011,33(5):82-87.[7]王鹤松,张劲松,孟 平,等.华北低山丘陵区冬小麦田土壤呼吸变化规律及其影响机制[J].中国农业气象,2007,28(1):21-24.[8]黄 耀,刘世梁,沈其荣,等.农田土壤有机碳动态模拟模型的建立[J].中国农业科学,2001,34(5):465-468.[9]石洪华,郑 伟,丁德文,等.典型海岛生态系统服务及价值评估[J].海洋环境科学,2009,28(6):743-748.[10]石洪华,王晓丽,王 嫒,等.北长山岛森林乔木层碳储量及其影响因子[J].生态学报,2013,33(19):6363-6372.[11]冯朝阳,吕世海,高吉喜,等.华北山地不同植被类型土壤呼吸特征研究[J].北京林业大学学报,2008,30(2):20-26.[14]郭 辉,董希斌,姜 帆.采伐强度对小兴安岭低质林分土壤碳通量的影响[J].林业科学,2010,46(2):110-115.[15]王艳萍,高吉喜,冯朝阳,等.北京京郊果园施用不同农肥的土壤呼吸特征研究[J].浙江大学学报:农业与生命科学版,2009,35(1):77-83.[16]刘尚华,吕世海,冯朝阳,等.京西百花山区六种植物群落凋落物及土壤呼吸特性研究[J].中国草地学报,2008,30(1):78-85.[17]张劲松,孟 平,王鹤松,等.华北石质山区刺槐人工林的土壤呼吸[J].林业科学,2008,44(2):8-14.[18]耿绍波,饶良懿,鲁绍伟,等.国内应用LI-8100开路式土壤碳通量测量系统测量土壤呼吸研究进展[J].内蒙古农业大学学报:自然科学版,2010,31(3):310-316.[25]陈全胜,李凌浩,韩兴国,等.水分对土壤呼吸的影响及机理[J].生态学报,2003,23(5):972-978.
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Diurnal change of soil carbon flux of island forests:A case study in Beichangshan Island

  • 1. College of Mathematics Science, Ocean University of China, Qingdao 266100, China;
  • 2. The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;
  • 3. College of Environment Science and Engineering, Ocean University of China, Qingdao 266100, China

Abstract: By employing the LI-8100 CO2 flux automatic monitoring system (LI-COR Inc.,Lincoln,NE,USA),this paper measured the diurnal changes of the soil carbon flux in the artificial plantations on the Beichangshan Island of Shandong Province.The diurnal changes of soil carbon flux and its environmental factors such as temperature and water were analyzed.The results indicated that soil carbon flux appeared single diurnal pattern,with the peaks presented at about 14:30 and the lowest presented at about 06:00.The diurnal average of soil carbon flux ranged from 1.835 mol/(m2s) to 14.475 mol/(m2s).Significant relationships were found between soil respiration rate and soil temperature (10 cm),which could be best described by exponential equations (R2=0.492-0.702, P0.05).The Q10 value was based on the exponential correlations,which represented the sensitivity of soil respiration to temperature. Its values of Robinia pseudoacacia in May, Pinus thunbergii in May, Robinia pseudoacacia in Aug, Pinus thunbergii in Aug were 1.448,1.301,3.254,3.445,respectively.There were exponential correlations (R2=0.689,P0.05),quadratic correlations (R2=0.819,P0.05) and linear correlations(R2=0.363-0.601,P0.05)between respiration rate and soil moisture (0~10 cm).Owing to the soil moisture condition,the soil moisture in May had more influence on soil carbon flux than that in August.On the whole,the important regulative factors to soil carbon flux were soil temperature (10 cm)and soil moisture (0~10 cm),and its combined effect could account for more than 73.1% of the soil carbon flux changes on the Beichangshan Island(R2=0.73-0.91,P0.05).

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