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中国农学通报

中国农学通报 ›› 2023, Vol. 39 ›› Issue (14): 159-164.doi: 10.11924/j.issn.1000-6850.casb2022-0424

• 三农研究 • 上一篇    

天津市农田生态系统碳收支年际变化研究

李梦琦1(), 张慧1, 赵杰1, 王立艳1, 董昱辰2, 肖辉1()   

  1. 1 天津市农业科学院，天津 300384
    2 天津亚派绿肥生物科技发展有限公司，天津 301600
  • 收稿日期:2022-05-26 修回日期:2022-07-08 出版日期:2023-05-09 发布日期:2023-05-09
  • 作者简介:

    李梦琦，女，1993年出生，河北保定人，研究实习员，硕士，研究方向为植物生态。通信地址：300384 天津市西青区中北镇津静公路17公里处生物中心楼1楼 天津市农业科学院农业资源与环境研究所，Tel：022-27950687，E-mail：。

  • 基金资助:
    科技部国家重点研发计划项目“环渤海盐碱地耕地质量与产能提升技术模式及应用”(2021YFD190090407); 科技部国家重点研发计划项目“环渤海盐碱地耕地质量与产能提升技术模式及应用”(2021YFD190090505); 天津市农业科学院青年科技创新项目“新型功能化秸秆生物炭研制及其盐碱地作用机制研究”(2021008); 天津市农业科学院青年科技创新项目“基于秸秆还田的农田固碳增汇技术研究”(2022007)

Interannual Variations of Carbon Absorption and Emission of Farmland Ecosystem in Tianjin

LI Mengqi1(), ZHANG Hui1, ZHAO Jie1, WANG Liyan1, DONG Yuchen2, XIAO Hui1()   

  1. 1 Tianjin Academy of Agricultural Sciences, Tianjin 300384
    2 Tianjin Yapailvfei Biotechnology Science and Technology Development Company Limited, Tianjin 301600
  • Received:2022-05-26 Revised:2022-07-08 Online:2023-05-09 Published:2023-05-09

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摘要：

利用2010—2020年天津农田生态系统主要农作物产量、常用耕地面积、有效灌溉面积、化肥施用量、农药、农膜、柴油使用量等统计数据，估算了天津农田生态系统碳吸收、碳排放情况，以期为天津农田固碳减排提供参考和数据支持。结果表明：2010—2020年天津农田生态系统碳吸收总量相对稳定，年均434万t。粮食作物中玉米和小麦的碳吸收量占比最高，且整体上均呈平缓增长趋势。农田碳排放总量逐年降低，由2010年的32.88万t降到2020年的14.25万t，总降幅约57%。各碳排放源中，化肥的碳排放占比最高，且基本上逐年降低。柴油和农膜是仅次于化肥的排放源，碳排放量均逐年降低。天津农田生态系统的碳吸收明显大于碳排放，具有较强的碳汇功能，净碳汇的年度变化不明显，年均408万t。

关键词: 农田生态系统, 碳吸收, 碳排放, 碳汇, 天津

Abstract:

Based on the statistics of main crop yield, commonly cultivated area, effective irrigation area, and the application amount of fertilizers, pesticides, agricultural film and diesel oil in Tianjin farmland ecosystem from 2010 to 2020, we estimated the carbon absorption and emission, in order to provide reference data for carbon sequestration and emission reduction in Tianjin farmland. The results indicated that the total carbon absorption of Tianjin farmland ecosystem was relatively stable from 2010 to 2020, with an annual average of 4.34 million tons. Among food crops, maize and wheat accounted for the highest proportion of carbon absorption, and showed a gradual increasing tendency. The total carbon emissions from farmland decreased year by year, from 328800 tons in 2010 to 142500 tons in 2020, with a total decrease of about 57%. Among the carbon emission sources, fertilizers accounted for the highest proportion of carbon emission, and basically decreased year by year. Diesel and agricultural film were the second largest emission source after fertilizers, and their carbon emissions decreased year by year. The carbon absorption of Tianjin farmland ecosystem was significantly higher than the carbon emission, indicating that the ecosystem had a strong carbon sink function. The annual change of the net carbon sink was not significant, with an annual average of 4.08 million tons.

Key words: farmland ecosystem, carbon absorption, carbon emission, carbon sink, Tianjin