| 广州地区晚稻田 CH4和N2O 的排放通量及其影响因素 |
| |
| 引用本文： | 卢维盛,张建国,廖宗文.广州地区晚稻田 CH4和N2O 的排放通量及其影响因素[J].生态学杂志,1997,8(3):275-278. |
| |
| 作者姓名： | 卢维盛 张建国 廖宗文 |
| |
| 作者单位： | 华南农业大学资源环境学院, 广州 510642 |
| |
| 基金项目： | 中国科学院南京土壤研究所土壤圈物质循环开放实验室资助项目 |
| |
| 摘 要： | 用密闭箱法同时研究了广州地区晚稻田CH4和N2O的排放通量。结果表明,连续淹水、常规连作和水旱轮作等3种处理的CH4平均排放通量分别为1.763、2.84和0.36mg·m-2·h-1,而N2O的平均排放通量分别为6.74、11.69和55.07μgN2O-N·m-2·h-1,表明稻田连续淹水显著增加CH4的排放而降低N2O的排放。水旱轮作降低CH4排放而提高N2O的排放,说明稻田CH4和N2O排放之间存在着消长关系。讨论了这2种温室气体排放的影响因素,并初步分析了它们对温室效应的相对贡献。
|
| 关 键 词： | 稻田 CH4和N2O排放通量 水分管理 水旱轮作 |
| 收稿时间： | 1996-11-18 |
CH4 and N2O fluxes from late-rice fields in Guangzhou region and their affecting factors |
| |
| Lu Weisheng,Zhang Jianguo,Liao Zongwen.CH4 and N2O fluxes from late-rice fields in Guangzhou region and their affecting factors[J].Chinese Journal of Ecology,1997,8(3):275-278. |
| |
| Authors: | Lu Weisheng Zhang Jianguo Liao Zongwen |
| |
| Institution: | South China Agricultural University, Guangzhou 510642 |
| |
| Abstract: | CH4 and N2O fluxes from late-rice fileds in Guangzhou region were measured simultaneously by closed chamber method.The results show that the mean CH4 fluxes are respectively 17.63,2.84 and 0.36mg·m-2·h-1 from the treatments of continuous flooding ,routine succession cropping and rice-vegetabele rotation,and the mean N2O fluxes are 6.74,11.69 and 55.07 μg N2O-N·m-2·h-1 correspondingly,which indicates that continuous floodin can greatly increase CH4 emission,while sinnificantly reduce N2O emission.Rice vegetable rotation is the reverse.There exists a trade off between CH4 and N2O emission.The factors affectin CH4 and N2O emssion are discussed,and the contribution of CH4 and N2O to global warming is preliminarily alalysed. |
| |
| Keywords: | Rice field CH4 and N2O fluxes Water management Rice-vegetable rotation |
|
| 点击此处可从《生态学杂志》浏览原始摘要信息 |
| 点击此处可从《生态学杂志》下载免费的PDF全文 |
|
