| 赵飞,田玉华,尹斌,赵旭.苏南蟹虾养殖塘氨和温室气体排放的昼夜变化特征[J].农业环境科学学报,2025,44(7):1920-1929. |
| 苏南蟹虾养殖塘氨和温室气体排放的昼夜变化特征 |
| Diurnal variation of ammonia and greenhouse gases emissions from crab and shrimp culture ponds in southern Jiangsu Province |
| 投稿时间:2024-10-03 |
| DOI:10.11654/jaes.2024-0832 |
| 中文关键词: 温室气体通量 氨排放 水-气界面 昼夜变化 |
| 英文关键词: greenhouse gases flux ammonia emission water-gas interface diurnal variation |
| 基金项目:国家重点研发计划项目(2021YFD1700805) |
| 作者 | 单位 | E-mail | | 赵飞 | 江苏常熟农田生态系统国家野外科学观测研究站(中国科学院南京土壤研究所), 南京 210008 中国科学院大学, 北京 100049 中国科学院大学南京学院, 南京 211135 | | | 田玉华 | 江苏常熟农田生态系统国家野外科学观测研究站(中国科学院南京土壤研究所), 南京 210008 中国科学院大学, 北京 100049 中国科学院大学南京学院, 南京 211135 | | | 尹斌 | 江苏常熟农田生态系统国家野外科学观测研究站(中国科学院南京土壤研究所), 南京 210008 中国科学院大学, 北京 100049 中国科学院大学南京学院, 南京 211135 | | | 赵旭 | 江苏常熟农田生态系统国家野外科学观测研究站(中国科学院南京土壤研究所), 南京 210008 中国科学院大学, 北京 100049 中国科学院大学南京学院, 南京 211135 | zhaoxu@issas.ac.cn |
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| 中文摘要: |
| 本研究以苏南地区典型集约化蟹虾混养池塘(C-SP)和虾单养池塘(SP)为研究对象,用浮箱-气相色谱法和密闭抽气法在5月喂养期对养殖塘水-气界面温室气体(N2O、CH4)和NH3通量进行昼夜监测,并同步记录测定了气象及表层水体理化指标。结果显示C-SP和SP均表现为N2O、CH4和NH3的释放源。C-SP和SP的N2O日平均通量分别为0.10 mg·m-2·h-1和0.11 mg·m-2·h-1;CH4日平均通量分别为0.18 mg·m-2·h-1和0.24 mg·m-2·h-1;NH3日平均通量分别为0.23 mg·m-2·h-1和0.12 mg·m-2·h-1。C-SP和SP的NH3排放均表现出明显昼夜变化特征,日变异系数分别为54.23%和92.80%。与SP相比,C-SP的CH4排放通量显著降低了25.00%(n=7,P<0.05),而NH3排放通量升高了91.67%。 |
| 英文摘要: |
| In this study, the diurnal variations of greenhouse gases(N2O, CH4)and NH3 at the water surface-atmosphere interface of intensive crab-shrimp mixotrophic pond(C-SP) and shrimp monoculture pond(SP) were determined by the floating chamber-gas chromatography method and continuous airflow enclosure method respectively. In addition, meteorological conditions and physicochemical indexes of the water were recorded simultaneously. Both C-SP and SP ponds acted as the sources of N2O, CH4 and NH3 on the daily scale. In the C-SP and SP, the diurnal averaged fluxes were 0.10 mg·m-2·h-1 and 0.11 mg·m-2·h-1 for N2O, 0.18 mg·m-2·h-1 and 0.24 mg·m-2·h-1 for CH4, and 0.23 mg·m-2·h-1 and 0.12 mg·m-2·h-1 for NH3, respectively. There was a significant daily variation in NH3 emissions from CSP and SP with daily coefficients of variation of 54.23% and 92.80%, respectively. The CH4 release flux was significantly lower by 25.00% (n=7, P<0.05)and the NH3 emission flux was higher by 91.67% for C-SP as compared to SP. |
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