| 热浪发生期提前对草甸草原碳吸收的影响 |
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| 引用本文： | 董校兵,程利,曲鲁平,董刚,童琦,邵长亮.热浪发生期提前对草甸草原碳吸收的影响[J].草地学报,2022,30(1):161-168. |
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| 作者姓名： | 董校兵 程利 曲鲁平 董刚 童琦 邵长亮 |
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| 作者单位： | 1. 中国农业科学院，北京 100081;2. 呼伦贝尔市林业和草原科学研究所，内蒙古 呼伦贝尔 021000;3. 福建农林大学，福建 福州 350002;4. 山西大学，山西 太原 030002 |
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| 基金项目： | 国家重点研发计划项目(2017YFE0104500);国家自然科学基金(41771205);国家科技部重点研发项目(2017YFA0604801)资助。 |
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| 摘 要： | 全球变暖导致热浪(Heat wave)频发的背景下,热浪发生期有明显提前的趋势.为了探究热浪发生期提前与生态系统碳吸收之间的关系,本研究在内蒙古呼伦贝尔草甸草原进行了为期2年的野外原位模拟热浪控制试验,通过在开顶箱(OTC)内置加热器进行短时间集中加热的方式,共形成对照组(Control)、热浪发生期提前组(HW7)和...
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| 关 键 词： | 热浪 热浪发生期提前 碳吸收 净生态系统CO2交换 |
| 收稿时间： | 2021-06-16 |
The Early Occurrence of Heat Wave on Carbon Sequestration in Meadow Steppe |
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| DONG Xiao-bing,CHENG Li,QU Lu-ping,DONG Gang,TONG Qi,SHAO Chang-liang.The Early Occurrence of Heat Wave on Carbon Sequestration in Meadow Steppe[J].Acta Agrestia Sinica,2022,30(1):161-168. |
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| Authors: | DONG Xiao-bing CHENG Li QU Lu-ping DONG Gang TONG Qi SHAO Chang-liang |
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| Institution: | 1. Chinese Academy of Agricultural Sciences, Beijing 100081, China;2. Hulunbuir Forestry and Grassland Science Research Institute, Hulunbuir, Inner Mongolia 021000, China;3. Fujian Agriculture and Forestry University, Fuzhou, Fujian Province 350002, China;4. Shanxi University, Taiyuan, Shanxi Province 350002, China |
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| Abstract: | Under the background of the frequent heat wave caused by global warming,the occurrence of heat wave was obviously earlier.To explore the relationship between the early occurrence of heat waves and ecosystem carbon sequestration,a two-year field in situ simulation heat wave control experiment was conducted in this study in Hulunbuir meadow grassland in Inner Mongolia,with short-time centralized heating by built-in heaters in the open top chamber(OTC).Three treatment levels of control(Control),early heat wave period(HW7)and normal heat wave period(HW8)were formed to study the effect of early heat wave period on carbon fluxes dynamics in meadow grasslands,and the net ecosystem CO2 exchange,biomass,and real-time measure of temperature and soil water content in the sample plots were measured.The results showed that HW7 reduced the net ecosystem CO2exchange by 51%,and HW8 only reduced 26%,and compared to HW8(12 d),HW7 requireed a longer recovery period(27 d).At the same time,the timely water supply after the end of heat wave could alleviate the after-effect of heat wave on ecosystem and shorten the recovery time of ecosystem after heat wave. |
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| Keywords: | Heat wave The early occurrence of heat wave Carbon sequestration Net ecosystem CO2 exchange(NEE) |
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