| 中国农田土壤N2O排放通量分布格局研究 |
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| 引用本文： | 王效科,庄亚辉,李长生.中国农田土壤N2O排放通量分布格局研究[J].生态学报,2001,21(8):1225-1232. |
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| 作者姓名： | 王效科 庄亚辉 李长生 |
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| 作者单位： | [1]中国科学院生态环境研究中心系统生态室，北京100085 [2]UniversityofNewHampshire,Durham,NH03824,USA |
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| 基金项目： | 国家自然科学重大基金 (4 98992 70和 3 9790 1 0 0 )资助项目 |
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| 摘 要： | 中国作为世界上一个重要农业大国，对全球大气中N2O浓度的影响正在引起人们的普遍关注。该研究采用针对农业土壤痕量气体排放估算建立的，基于N2O的产生、传输和消耗机理的反硝化分解（DNDC）模型，在建立了有关中国气候、农业土壤和农业生产的分县数据库基础上，估计了我国各县农业土壤N2O的排放通量，发现我国农田土壤N2O排放通量有较明显的地区差异，西北地区较低，东南地区较高。还发现无论温度升高，还是施肥量变化，对我国农田土壤N2O排放通量的影响，都存在区域差异，表现为东南地区的变化幅度较西北地区大，这可能与我国气候的干湿变化有较密切的关系。
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| 关 键 词： | 农田土壤 排放模型 一氧化二氮排放 分布格局 排放通量 |
| 收稿时间： | 1999/12/28 0:00:00 |
The distribution pattern of N2O emission from agricultural soil in China |
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| WANG Xiaoke,ZHUANG Yahui and LI Changsheng.The distribution pattern of N2O emission from agricultural soil in China[J].Acta Ecologica Sinica,2001,21(8):1225-1232. |
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| Authors: | WANG Xiaoke ZHUANG Yahui and LI Changsheng |
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| Institution: | DSE; Research Center for Eco Environmental Sciences; CAS; Beijing |
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| Abstract: | As a large country, the impact of China's agricultural practice on atmospheric N 2O would be highly significant. Field measurements of N 2O emission from agricultural land have been carried out. However, it is still difficult to estimate the total soil emission of N 2O in China from these field measurement because of the diversity of climate and cultivation practices that control soil N 2O emission. In this study, in order to estimate N 2O emission more accurately, a process oriented model DNDC (Den... |
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| Keywords: | agricultural soil emission model pattern of N 2O emission |
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