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当前位置: 首页 > 文章 > 旱地农田生态系统N_2O排放对气温升高的响应 安徽农业科学 2012,40 (28) 13950-13954
Position: Home > Articles > Response of N_2O Emissions of Farmland Ecosystem on Temperature Rising Journal of Anhui Agricultural Sciences 2012,40 (28) 13950-13954

旱地农田生态系统N_2O排放对气温升高的响应

作  者：
刘柳松;施建成
单  位：
中国科学院遥感应用研究所
关键词：
旱地;农田生态系统;N2O;排放;气温升高
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。
译  名：
Response of N_2O Emissions of Farmland Ecosystem on Temperature Rising
作  者：
LIU Liu-song et al(Institute of Remote Sensing Applications,CAS,Beijing 100101)
关键词：
Dry land;Farmland ecosystem;N2O emission;Temperature rising
摘  要：
[Objective] The aim was to study on response of N2O emissions of farmland ecosystem on temperature rising.[Method] In farmland ecosystem in Huaibei 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 rape 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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