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中国沙漠 ›› 2018, Vol. 38 ›› Issue (6): 1237-1242.DOI: 10.7522/j.issn.1000-694X.2018.00045

• 生物与土壤 • 上一篇    下一篇

甘肃省农田生态系统碳收支动态

康霞   

  1. 甘肃农业大学 农学院, 甘肃 兰州 730070
  • 收稿日期:2017-09-20 修回日期:2018-01-02 出版日期:2018-11-20 发布日期:2018-12-05
  • 作者简介:康霞(1977-),女,甘肃渭源人,博士,主要从事农学研究。E-mail:1561093139@qq.com
  • 基金资助:
    甘肃省自然科学基金项目(1506RJZA013)

Dinamics of Carbon Absorption and Emission of Crops in Gansu, China

Kang Xia   

  1. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2017-09-20 Revised:2018-01-02 Online:2018-11-20 Published:2018-12-05

摘要: 量化分析了甘肃省兰州、天水、庆阳、定西、金昌和嘉峪关及甘南藏族自治州7个地区的农田生态系统主要作物碳吸收、排放的动态变化。结果显示:研究区2007—2014年的农田生态系统碳吸收总量为1.67~61.18万t,年均增加率3.31%~18.10%。农田生态系统的碳吸收强度最大的是嘉峪关,其次是兰州;碳吸收强度最小的是定西,为0.62 t·hm-2·a-1。2007—2014年,兰州、天水、庆阳、定西、金昌、嘉峪关、甘南的农田生态系统的年均净碳源强度分别为-0.254、-0.241、-0.196、-0.221、-0.005、0.163、-0.042 t·hm-2

关键词: 农田, 作物, 碳排放, 碳吸收, 甘肃

Abstract: The dynamic changes of carbon absorption, carbon emissions, and carbon footprint of major crops in agricultural production in Lanzhou, Tianshui, Qingyang, Dingxi, Jinchang, Jiayuguan city and Gannan Autonomous Prefecture in 2007-2014 were quantitatively analyzed. The main results of the study are summarized as follows:The carbon uptake of farmland ecosystems in the studied areas in 2007-2014 was 1.67-61.18 million tons, with an annual increase rate of 3.31%-18.10%. The largest carbon absorption intensity of farmland ecosystems was in Jiayuguan city, followed by Lanzhou city, while Dingxi City was ranked the carbon absorption intensity with an average of 0.62 t·hm-2. The annually net carbon absorption for Lanzhou, Tianshui, Qingyang, Dingxi, Jinchang, Jiayuguan and Gannan in 2007-2014 were -0.254, -0.241, -0.196, -0.221, -0.005, 0.163, -0.042 t·hm-2, respectively.

Key words: farmland, crops, carbon emission, carbon absorption, Gansu

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