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| 升金湖枯水期滩地土壤CO2-C释放通量及有机碳稳定性研究 | |
| 引用本文： | 郑聚锋,潘根兴,吴新民.升金湖枯水期滩地土壤CO2-C释放通量及有机碳稳定性研究[J].湿地科学,2011,9(2):132-139. |
| 作者姓名： | 郑聚锋 潘根兴 吴新民 |
| 作者单位： | 1. 南京农业大学农业资源与生态环境研究所，江苏南京210095;南京林业大学森林资源与环境学院，江苏南京210037 2. 南京农业大学农业资源与生态环境研究所,江苏南京,210095 3. 池州学院化学材料与工程实验中心,安徽池州,247100 |
| 基金项目： | 国家自然科学基金重点项目(40830528)资助 |
| 摘 要： | 湿地是陆地生态系统的重要组成部分,在陆地碳库和固碳中具有重要作用。全球湿地碳库的稳定对减少土地利用变化引起的温室气体释放及减缓气候变化具有重要意义。以升金湖国家级自然保护区的典型滩地为研究对象,采用静态箱—气相色谱法对土壤CO2释放通量进行观测和测定,并进一步分析土壤有机碳库的分布,探讨了滩地土壤呼吸动态和碳库稳定性。研究结果表明,升金湖0～20 cm滩地土壤有机碳含量为11.47～22.25 g/kg,有机碳密度为3.78～4.58 kg/m2,平均有机碳密度为4.11 kg/m2,土壤CO2-C释放通量为111.7～499.5mg/（m2.h）;滩地土壤有机碳密度和CO2-C释放通量高于周边地区的水稻土土壤,且其有机碳稳定系数偏低,这表明升金湖滩地土壤有机碳库自身具有较高的稳定性,这是滩地土壤有机碳保持的一种机制,在气候变暖背景下,滩地土壤有机碳库的脆弱性将增加。 |
| 关 键 词： | 升金湖滩地 土壤呼吸 碳库稳定性 温度敏感性 |
CO_2-C Emission Flux and Stability of Organic Carbon of Soil in Beach in Shengjin Lake,Anhui Province,China in Dry Season |
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| ZHENG Ju-Feng,PAN Gen-Xing,WU Xin-Min.CO_2-C Emission Flux and Stability of Organic Carbon of Soil in Beach in Shengjin Lake,Anhui Province,China in Dry Season[J].Wetland Science,2011,9(2):132-139. | |
| Authors: | ZHENG Ju-Feng PAN Gen-Xing WU Xin-Min |
| Institution: | ZHENG Ju-Feng~(1,2),PAN Gen-Xing~1,WU Xin-Min~3 (1.Institute of Resources,Ecosystem and Environment of Agriculture,Nanjing Agricultural University,Nanjing 210095,Jiangsu,P.R. China,2.College of Forest Resources and Environment,Nanjing Forestry University,Nanjing 210037,P.R.China,3.Laboratorial Center for Chemical Material and Engineering,Chizhou College,Chizhou 247100,Anhui,P.R.China) |
| Abstract: | As one of the most important components of terrestrial ecosystems,wetlands play an important role in global carbon storage.The stabilizing wetland carbon pool is of key importance in reducing greenhouse gases from land use changes for climate change.In this study,diurnal dynamics of soil respiration was monitored for continuous 39 hours in an interval of 3 hours on April 23-25,2005 and carbon dioxide emission flux was measured using closed chamber method and carbon dioxide content determined by GC spectrosc... |
| Keywords: | Shengjin Lake beach soil respiration carbon pool stability temperature dependence |
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