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农学学报 ›› 2025, Vol. 15 ›› Issue (9): 30-36.doi: 10.11923/j.issn.2095-4050.cjas2024-0170

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

武威市农田生态系统碳源/汇变化分析

李彩弟(), 陈军娟, 马白, 柴明喜, 张雅茹   

  1. 兰州博文科技学院,兰州 730100
  • 收稿日期:2024-08-17 修回日期:2025-02-24 出版日期:2025-09-20 发布日期:2025-09-17
  • 作者简介:

    李彩弟,女,1993年出生,甘肃兰州人,助教,硕士,研究方向:农业信息化。通信地址:730100 甘肃省兰州市榆中县和平镇薇乐大道311号 兰州博文科技学院,E-mail:

  • 基金资助:
    兰州博文科技学院2023年校级项目(2023BWJX013)

Analysis of Carbon Source/Sink Changes in Farmland Ecosystem of Wuwei City

LI Caidi(), CHEN Junjuan, MA Bai, CHAI Mingxi, ZHANG Yaru   

  1. Lanzhou Bowen College of Science and Technology, Lanzhou 730100
  • Received:2024-08-17 Revised:2025-02-24 Online:2025-09-20 Published:2025-09-17

摘要: 整理和测算武威市2010—2022年农田生态系统数据,分析碳源/汇的总量及其影响因素,为推动武威市农业向低碳、高产、可持续发展提供依据。首先,利用农业生态系统碳源/汇公式计算农业碳排放总量和碳吸收总量。其次,运用LMDI模型对武威市农业碳源/汇驱动因素进行分解。结果表明:相比2010年,2022年武威市农业碳排放总量呈下降趋势,减少了14.42%,碳吸收总量呈上升趋势,增加了31.66%;各种碳源结构为:化肥(33.25%)>农膜(29.88%)>翻耕(22.78%)>灌溉(14.91%)>机械(0.19%),化肥降速最快;各种碳汇结构为:玉米(52.67%)>小麦(19.37%)>蔬菜(13.87%)>油料(9.17%)>豆类(1.76%)>薯类(1.64%)>瓜类(1.52%)。从影响因素来看,经济因素对碳排放起到促进作用,碳汇系数、碳汇结构、碳汇技术对碳吸收起到促进作用。对武威市2010—2022年碳源/汇的总量计算、影响因素的分析表明合理控制农业生产投入和优化产业结构,可以有效降低农业碳排放量。

关键词: 武威市, 农田生态系统, 碳源, 碳汇

Abstract:

The data of farmland ecosystem in Wuwei City from 2010 to 2022 were collated and calculated, and the total amount of carbon source / sink and its influencing factors were analyzed, so as to provide a basis for promoting the low-carbon, high-yield and sustainable development of agriculture in Wuwei City. Firstly, the agricultural ecosystem carbon source/sink formula was used to calculate the total agricultural carbon emissions and carbon absorption. Secondly, the LMDI model was applied to decompose the driving factors of agricultural carbon sources/sinks in Wuwei City. The results showed that compared with 2010, total agricultural carbon emissions in Wuwei City decreased by 14.42% in 2022, showing a downward trend, and total carbon sequestration increased by 31.66%, showing an upward trend. The structure of various carbon sources was: fertilizer (33.25%) > agricultural film (29.88%) > tillage (22.78%) > irrigation (14.91%) > machinery (0.19%), fertilizer had the fastest rate of decline; the structure of various carbon sinks was: maize (52.67%) > wheat (19.37%) > vegetables (13.87%) > oilseeds (9.17%) > legumes (1.76%) > potatoes (1.64%) > melons (1.52%). From the perspective of influencing factors, economic factors played a promoting role in carbon emissions, while carbon sink coefficient, carbon sink structure, and carbon sink technology played a promoting role in carbon absorption. By calculating the total amount of carbon sources/sinks in Wuwei City from 2010 to 2022 and analyzing the influencing factors, it was shown that reasonable control of agricultural production inputs and optimization of industrial structure could effectively reduce agricultural carbon emissions.

Key words: Wuwei City, agricultural ecosystem, carbon source, carbon sink