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当前位置: 首页 > 文章 > 温度、氮输入对洪河湿地CO_2通量的影响 东北农业大学学报 2013 (2) 77-82
Position: Home > Articles > Effect of temperature and nitrogen addition on CO_2 flux from Honghe wetland Journal of Northeast Agricultural University 2013 (2) 77-82

温度、氮输入对洪河湿地CO_2通量的影响

作  者：
孙彦坤;杨帆;张立友;高见;李维海
单  位：
黑龙江省查哈阳灌区管理局;东北农业大学资源与环境学院;黑河市气象局;吉林省白城人工增雨基地;吉林省白城市人工增雨基地巴彦县气象局
关键词：
CO2通量;氮输入;温度;洪河湿地
摘  要：
采用静态箱-气相色谱仪法,对洪河湿地CO2呼吸通量进行观测,模拟不同水平氮输入湿地,设计0、20、40、60 g.m-2四种氮水平及秸秆还田处理,探讨不同氮水平对洪河湿地CO2释放的影响。结果表明,7月生态系统呼吸通量高于其他月份,呈现出季节变化的单峰模式。湿地CO2通量与温度具有相关性,其中与5 cm深土壤温度相关性最强,呈指数相关关系。不同氮水平系统呼吸通量与5 cm地温二次相关。氮输入促进了湿地CO2排放,且中氮量输入(N2PK)释放量最多,秸秆还田技术能抑制中氮输入量产生的高呼吸通量。
译  名：
Effect of temperature and nitrogen addition on CO_2 flux from Honghe wetland
作  者：
SUN Yankun1,YANG Fan1,ZHANG Liyou2,GAO Jian3,LI Weihai4,CHEN Jing1,TIAN Baoxing1(1.School of Resources and Environmental Sciences,Northeast Agricultural University,Harbin 150030,China;2.Jilin Province Baicheng City Artificial Rainfall Base,Baicheng Jilin 137000,China;3.Heilongjiang Province Zhaoyuan City Meteorologic Bureau,Daqing Heilongjiang 166500,China;4.Heilongjiang Province Heihe City Meteorologic Bureau,Heihe Heilongjiang 164300,China)
关键词：
CO2 flux;nitrogen addition;temperature;Honghe wetland
摘  要：
CO2 flux was measured monthly over the growing seasons with the closed-chamber technique in the Honghe Wetland.Four N-treatments(0,20,40,60 g·m-2) and straw-return were designed,the effect of different nitrogen application CO2 emission from Honghe wetland was further discussed.The results shows that the CO2 flux was higher in July than other months in the growth season.The CO2 flux was more positively correlated with soil temperature of 5 cm depth than air temperature and soil temperature of 0cm depth,10cm depth,15 cm depth,20 cm depth,there was exponential relationship between CO2 flux and the soil temperature(5 cm).In different nitrogen levels,CO2 fluxes quadratic ally correlated to the temperature at 5 cm depth.The application of fertilizer can improve CO2 flux;ecosystem respiration increased with the increase of nitrogen amount,the maximum soil respiration rate was at N2PK level,and straw-return would decrease the CO2 fluxes of N2PK level.

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