| 玛纳斯河流域不同灌区棉田土壤CO2和N2O排放通量 |
| |
| 引用本文： | 张梦洁,李艳红,李发东,何新林. 玛纳斯河流域不同灌区棉田土壤CO2和N2O排放通量[J]. 水土保持学报, 2023, 37(1): 304-312 |
| |
| 作者姓名： | 张梦洁 李艳红 李发东 何新林 |
| |
| 作者单位： | 1. 新疆师范大学地理科学与旅游学院, 乌鲁木齐 830054;2. 新疆维吾尔自治区重点实验室, 新疆干旱区湖泊环境与资源实验室, 乌鲁木齐 830054;3. 中国科学院地理科学与资源研究所, 北京 100101;4. 中国科学院大学资源与环境学院, 北京 100190;5. 石河子大学水利建筑工程学院, 新疆 石河子 832000;6. 现代节水灌溉兵团重点实验室, 新疆 石河子 832000 |
| |
| 基金项目： | 国家自然科学基金项目(U1803244) |
| |
| 摘 要： | 为探究石河子灌区、新湖总场灌区、莫索湾灌区之间土壤温室气体排放的差异性,通过长期的野外观测及样品采集,采用静态箱—气相色谱法,于2019年棉花出苗期、花铃期、吐絮期对玛纳斯河流域石河子灌区、新湖总场灌区、莫索湾灌区棉田土壤温室气体进行日观测,应用统计学方法,并结合土壤温度、含水量、pH、有机碳、铵态氮、硝态氮等因素分析。结果表明：(1)土壤CO2和N2O具有明显的季节变化和日变化,土壤CO2和N2O排放通量的峰值出现在花铃期,分别为527.160,1.713 mg/(m2·h)。同时,CO2排放通量日变化峰值出现在13:00,N2O排放通量日变化峰值出现在17:00,表现为单峰曲线。2种土壤温室气体在生育期内的排放通量在不同灌区之间有所差异,呈现出新湖总场灌区>莫索湾灌区>石河子灌区。(2)土壤CO2和N2O排放通量受温度影响更为显著,土壤CO2和N
|
| 关 键 词： | 玛纳斯河流域 棉田 土壤温室气体 |
| 收稿时间： | 2022-05-20 |
CO2 and N2O Emission Fluxes from Cotton Fields in Different Irrigation District of Manas River Basin |
| |
| ZHANG Mengjie,LI Yanhong,LI Fadong,HE Xinlin. CO2 and N2O Emission Fluxes from Cotton Fields in Different Irrigation District of Manas River Basin[J]. Journal of Soil and Water Conservation, 2023, 37(1): 304-312 |
| |
| Authors: | ZHANG Mengjie LI Yanhong LI Fadong HE Xinlin |
| |
| Affiliation: | 1. College of Geography and Tourism, Xinjiang Normal University, Urumqi 830054;2. Key Laboratory of Xinjiang Uygur Autonomous Region, Xinjiang Laboratory of Lake Environment and Resources in Arid Area, Urumqi 830054;3. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101;4. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190;5. College of Water Conservancy and Civil Engineering, Shihezi University, Shihezi, Xinjiang 832000;6. Key Laboratory of Modern Water-saving Irrigation Group, Shihezi, Xinjiang 832000 |
| |
| Abstract: | In order to explore the differences in soil greenhouse gas emissions between Shihezi Irrigation Area, Xinhuzongchang Irrigation Area and Mosowan Irrigation Area, through long-term field observation and sample collection, adopts the static closed chamber-GC technique, daily observation was conducted to observe the soil greenhouse gases in Shihezi Irrigation District, Xinhuzongchang Irrigation Area and Mosowan Irrigation Area of Manas River Basin in 2019 at the seedling stage, flowering boll stage and spitting stage, and statistical methods were applied, and combined with soil temperature, water content, pH, organic carbon, ammonium nitrogen, nitrate nitrogen and other factors in the Manas River Basin. The results showed that: (1) Soil CO2 and N2O had obvious seasonal and daily changes, and the peak of soil CO2 and N2O emission fluxes appeared at the flowering boll stage, which were 527.160 and 1.713 mg/(m2·h). At the same time, the peak of the daily change of CO2 emission flux appeared at 13:00, and the daily change peak of N2O emission flux appeared at 17:00, which was manifested as a unipolar curve. The emission fluxes of the two soil greenhouse gases during the growth period were different between different irrigation areas, showing the irrigation area of Xinhuzongchang > Mosuowan> Shihezi. (2) Soil CO2 and N2O emission fluxes were more significantly affected by temperature, and soil CO2 and N2O were significantly positively correlated with temperature. The Q10 of Shihezi Irrigation District, Xinhuzongchang Irrigation District and Mosowan Irrigation District were 1.31~1.82, 1.40~2.68 and 1.32~1.92, respectively. (3) The carbon reservoir reserves of cotton in Shihezi Irrigation District, Xinhuzongchang Irrigation Area and Mosowan Irrigation District were 3.34, 2.93 and 2.8 Tg, respectively. |
| |
| Keywords: | Manas River Basin cotton fields soil greenhouse gases |
|
| 点击此处可从《水土保持学报》浏览原始摘要信息 |
|
点击此处可从《水土保持学报》下载全文 |
|
