|
|||||
|
|
| DNDC模型对我国旱地N2O释放的拟合对比分析 | |
| 引用本文： | 徐文彬,刘广深,洪业汤,LI Changsheng,陈旭晖.DNDC模型对我国旱地N2O释放的拟合对比分析[J].矿物学报,2002,22(3):222-228. |
| 作者姓名： | 徐文彬 刘广深 洪业汤 LI Changsheng 陈旭晖 |
| 作者单位： | 1. 广东工业大学,环境科学与工程学院,广东,广州,510090 2. 浙江大学,环境科学研究所,浙江,杭州,310027 3. 中国科学院地球化学研究所,环境地球化学国家重点实验室,贵州,贵阳,550002 4. Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, USA 5. 贵州省农科院,土壤肥料研究所,贵州,贵阳,550006 |
| 基金项目： | 国家自然科学基金项目 (批准号 :49873 0 3 4，40 0 73 0 3 4)，中国博士后科学基金项目 |
| 摘 要： | 本文根据贵州省玉米－油菜轮作田、休耕地和大豆－冬小麦轮作田的N2O释放通量及其影响因子季节变化的是观测结果，对比分析了DNDC模型计算与三试验田田间观测在N2O释放通量及其主要影响因子季节变化上的拟合程度。结果表明，对N2O释放通量、土壤NO3^-和NH4^ 含量、土壤湿度和土温，模型计算结果与田间观测具有相似的季节变化模式和相近的数值，模型较好地反映了上述参数的动态变化过程。据此，推算出贵州省农业土壤N2O年释放量，并分析了气候变化和农业活动对释放量的潜在影响。 |
| 关 键 词： | DNDC模型 N2O 释放 旱地 中国 土壤湿度 季节变化 |
| 文章编号： | 1000-4734(2002)03-0222-07 |
| 修稿时间： | 2002年3月21日 |
THE FIRST COMPARISON OF MEASURED AND DNDC MODELED N2O FLUXES FROM UPLAND SOILS IN CHINA |
|
| LI Changsheng.THE FIRST COMPARISON OF MEASURED AND DNDC MODELED N2O FLUXES FROM UPLAND SOILS IN CHINA[J].Acta Mineralogica Sinica,2002,22(3):222-228. | |
| Authors: | LI Changsheng |
| Abstract: | In this study the seasonal variation of N 2O flux and its associated controlling factors at a corn rape rotation field, a fallow land and a soybean winter wheat rotation field in Guizhou Province, southwestern China were compared between measured and DNDC modeled N 2O fluxes. The results showed that the comparison of measured and DNDC modeled N 2O fluxes, soil NO 3 - and NH 4 + concentrations, soil WFPS and soil temperature exhibited similar trends and magnitudes, the major dynamics controlling N 2O emissions were properly captured by the model. Based on the success of this test and validation exercise, DNDC model was used to estimate N 2O emissions from the entire agricultural industry in Guizhou Province and to assess the potential effect of climate change and farming practice on N 2O emission. |
| Keywords: | N 2O DNDC flux upland soil simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |