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应用生态学报 ›› 2018, Vol. 29 ›› Issue (10): 3191-3198.doi: 10.13287/j.1001-9332.201810.001

• 研究论文 • 上一篇    下一篇

三江平原小叶章湿地温室气体排放及其对模拟氮沉降的响应

张荣涛1,2, 隋心3, 许楠2, 钟海秀2, 付晓宇1,2, 倪红伟2*   

  1. 1哈尔滨师范大学地理科学学院, 哈尔滨 150025;
    2黑龙江省科学院自然与生态研究所, 哈尔滨 150040;
    3黑龙江大学生命科学学院, 哈尔滨 150080
  • 收稿日期:2018-01-07 出版日期:2018-10-20 发布日期:2018-10-20
  • 通讯作者: E-mail: nihongwei2000@163.com
  • 作者简介:张荣涛, 男, 1985年生, 硕士研究生. 主要从事湿地生态学研究. E-mail: zhangrongtao14@163.com
  • 基金资助:
    本文由国家自然科学基金项目(31470019,31670489)、国家重点研发计划重点专项(2016YFC0500405-02)和黑龙江省院所基本应用技术研究专项(ZNJZ2017ZR01)资助

Responses of greenhouse gas emission to simulated nitrogen deposition in Calamagrostis angustifolia wetlands of Sanjiang Plain, China

ZHANG Rong-tao1,2, SUI Xin3, XU Nan2, ZHONG Hai-xiu2, FU Xiao-yu1,2, NI Hong-wei2*   

  1. 1College of Geographical Science, Harbin Normal University, Harbin 150025, China;
    2Institute of Nature and Ecology, Heilongjiang Academy of Sciences, Harbin 150040, China;
    3College of Life Sciences, Heilongjiang University, Harbin 150080, China
  • Received:2018-01-07 Online:2018-10-20 Published:2018-10-20
  • Supported by:
    The work was supported by the National Natural Science Foundation of China (31470019, 31670489), the National Key Research and Development Project (2016YFC0500405-02) and the Basic Application Technology Project of Heilongjiang Province (ZNJZ2017ZR01)

摘要: 利用黑龙江省科学院自然与生态研究所三江平原湿地生态定位研究站内的长期模拟氮沉降试验平台,采用静态箱-气相色谱法,设置低氮(40 kg N·hm-2·a-1)和高氮(80 kg N·hm-2·a-1)处理,以及对照(0 kg N·hm-2·a-1),测定小叶章湿地温室气体排放通量及其相关环境因子,研究三江平原小叶章湿地温室气体排放对氮沉降的响应.结果表明: 低氮和高氮输入均显著增加了温室气体的排放通量,低氮和高氮处理使CO2排放通量增加47.5%和47.9%,CH4排放通量增加76.8%和110.1%,N2O排放通量增加42.4%和10.6%.低氮输入改变了N2O排放的季节动态,但对CO2和CH4排放的季节动态没有显著影响,高氮处理对3种气体排放的季节动态均未造成影响.CO2排放通量和CH4排放通量均与土壤温度呈显著正相关,而影响N2O排放的因素较为复杂,未与土壤温度出现显著的相关关系.

Abstract: A long-term simulated nitrogen deposition experiment was carried out in Ecological Locating Research Station of the Institute of Nature and Ecology of Heilongjiang Academy of Sciences, with three different treatments including low nitrogen treatment (40 kg N·hm-2·a-1), high nitrogen treatment (80 kg N·hm-2·a-1) and the control (0 kg N·hm-2·a-1). The greenhouse gas emission fluxes were measured using a static box-gas chromatography method, with environmental factors being simultaneously investigated to understand the responses of greenhouse gas emission to the nitrogen deposition in the Calamagrostis angustifolia wetland. The results showed that low and high nitrogen treatments significantly increased the greenhouse gas emission fluxes. The CO2 emission flux increased by 47.5% and 47.9%, the CH4 emission fluxes increased by 76.8% and 110.1%, and the N2O emission fluxes increased by 42.4% and 10.6% in low nitrogen treatment and high nitrogen treatment, respectively. Low nitrogen input changed the seasonal dynamics of N2O emission fluxes but had no significant effect on that of CO2 and CH4 emissions. High nitrogen treatment did not affect the seasonal dynamics of greenhouse gas emissions. Soil temperature significantly positively correlated with CO2 and CH4 emission fluxes. There was no correlation between soil temperature and N2O emission flux because the factors affecting N2O emission were complex.