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| 鄱阳湖苔草湿地非淹水期CO2释放特征 | |
| 引用本文： | 胡启武,幸瑞新,朱丽丽,吴琴,尧波,刘影,胡斌华.鄱阳湖苔草湿地非淹水期CO2释放特征[J].应用生态学报,2011,22(6):1431-1436. |
| 作者姓名： | 胡启武 幸瑞新 朱丽丽 吴琴 尧波 刘影 胡斌华 |
| 作者单位： | 1. 江西师范大学地理与环境学院,南昌330022;鄱阳湖湿地与流域研究教育部重点实验室,南昌330022 2. 江西师范大学地理与环境学院,南昌,330022 3. 鄱阳湖南矶湿地国家级自然保护区,南昌,330127 |
| 基金项目： | 国家自然科学基金项目(40803022); 江西省教育厅青年科学基金项目(GJJ10094)资助 |
| 摘 要： | 2009年9月至2010年4月非淹水期,在鄱阳湖南矶湿地国家级自然保护区,选择以灰化苔草为建群种的洲滩湿地,设置土壤-植物系统(TC)、剪除植物地上部分(TJ)2个试验处理(分别代表生态系统和土壤呼吸),利用密闭箱-气相色谱法测定了非淹水期鄱阳湖苔草湿地CO,释放通量.结果表明:苔草湿地生态系统呼吸与土壤呼吸均具有明显的季节变化模式,释放速率变化范围分别为89.57～1243.99和75.30～960.94 mg CO2·m-2·h-1,土壤呼吸占生态系统呼吸的比例为64%(39%～84%);土壤温度是苔草湿地CO2通量的主要控制因子,可以解释呼吸速率80%以上的变异;生态系统呼吸与土壤呼吸的温度敏感性指数(Q10)分别为3.31和2.75,且冬季的Q10值明显高于春秋季节;土壤水分与CO2释放速率之间未达到显著相关;非淹水期,鄱阳湖苔草湿地是大气CO2的汇,其强度为1717.72 g C·m-2. |
| 关 键 词： | 鄱阳湖 湿地 生态系统呼吸 土壤呼吸 Q10 |
Characteristics of CO2 emission from Carex-dominated wetland in Poyang Lake in non-flooded period |
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| Hu Qi-Wu,Xing Rui-Xin,Zhu Li-Li,Wu Qin,Yao Bo,Liu Ying,Hu Bin-Hua.Characteristics of CO2 emission from Carex-dominated wetland in Poyang Lake in non-flooded period[J].Chinese Journal of Applied Ecology,2011,22(6):1431-1436. | |
| Authors: | Hu Qi-Wu Xing Rui-Xin Zhu Li-Li Wu Qin Yao Bo Liu Ying Hu Bin-Hua |
| Institution: | HU Qi-wu1,2,XING Rui-xin1,ZHU Li-li1,WU Qin1,YAO Bo1,LIU Ying1,HU Bin-hua3(1School of Geography and Environment,Jiangxi Normal University,Nanchang 330022,China,2Ministry of Education Key Laboratory of Poyang Lake Wetland and Watershed Research,3Poyang Lake Nanji Wetland National Nature Reserve,Nanchang 330127,China) |
| Abstract: | By using static chamber/gas chromatography,the CO2 fluxes in a Carex cinerascen-dominated wetland in the Poyang Lake Nanji Wetland National Nature Reserve were measured in non-flooded period(from September 2009 to April 2010).Two treatments were installed,i.e.,soil-plant system(TC) and aboveground plant removal(TJ),representing ecosystem respiration and soil respiration,respectively.There was an obvious seasonal variation in the ecosystem respiration and soil respiration.The respiration rate in treatment TC... |
| Keywords: | Poyang Lake wetland ecosystem respiration soil respiration Q10 |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ | |