| 旱地农田生态系统N2O排放对气温升高的响应（英文） |
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| 引用本文： | 刘柳松,施建成.旱地农田生态系统N2O排放对气温升高的响应（英文）[J].农业科学与技术,2012(9):1962-1966. |
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| 作者姓名： | 刘柳松 施建成 |
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| 作者单位： | 中国科学院遥感应用研究所 |
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| 基金项目： | Supported by National Natural Science Foundation of China(40930530)~~ |
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| 摘 要： | 目的]研究农作物N2O排放量对气温升高的响应。方法]以安徽省淮北地区农田生态系统为研究对象,利用生物地球化学过程模型DNDC,研究12种农作物N2O排放量对气温升高的响应。结果]旱地农作物对气温升高的响应可以分为3类。第一类农作物N2O排放量对气温升高不敏感,包括土豆、棉花、玉米和油菜,气温从升高0℃到升高3℃的情况下,N2O排放量变化不大,其中,当气温从升高0℃到升高1.5℃,排放量略微增大,从升高1.5℃到升高3℃,N2O排放量稍微下降。第二类作物N2O排放量对气温升高敏感,排放量随温度升高而下降,包括甘蔗、烟草、小麦、大豆和碗豆,当气温从升高0℃到升高3℃,N2O排放量下降8.1%。第三类农作物N2O排放量对气温升高敏感,排放量随温度升高而升高,包括水稻、蔬菜和果树,当气温从升高0℃到升高3℃,N2O排放量升高22.8%。结论]该研究结果表明在气温升高的情况下,旱地农田生态系统N2O排放量并没有大幅增加。
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| 关 键 词： | 旱地 农田生态系统 N2O 排放 气温升高 |
Response of N2O Emissions of Farmland Ecosystem on Temperature Rising |
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| Liusong LIU, Jiancheng SHI.Response of N2O Emissions of Farmland Ecosystem on Temperature Rising[J].Agricultural Science ＆ Technology,2012(9):1962-1966. |
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| Authors: | Liusong LIU Jiancheng SHI |
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| Institution: | Institute of Remote Sensing Applications, CAS, Beijing 100101, China |
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| Abstract: | Objective] The aim was to study on response of N2O emissions of farmland ecosystem on temperature rising.Method] In farmland ecosystem in Huaibei City in Anhui Province,N2O emission by twelve varieties of crop on temperature was researched with DeNitrification-DeComposition (NDC).Result] Response of dryland crop on temperature rising can be divided into three categories,as follows: The first category,N2O emission of crop changed little during the temperature increasing,for example,from 0 to 3 ℃,the emissions by potatoes,cotton,maize and rapeseed increased little and decreased little when temperature changed from 1.5 to 3 ℃.Crops of the second category declined with temperature increasing in N2O emission,for example,N2O emission decreased by 8.1% with temperature increasing from 0 to 3 ℃,including sugar cane,tobacco,wheat,soybean and pea.In third category,N2O emission of crop grew with temperature increasing,for example,the emission of rice,vegetables and fruit trees increased by 22.8% when the temperature grew from 0 to 3 ℃.Conclusion] The research indicated that N2O emission in ecosystem of dry farmland increased little with temperature rising. |
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| Keywords: | Arid land Farmland ecosystem N2O emission Temperature rising |
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