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Analysis of Carbon Flux Characteristics in Saline-Alkali Soil Under Global Warming

文献类型：期刊论文

作者Qiu, Haonan1; Yang, Shihong1; Wang, Guangmei2,3; Liu, Xiaoling2,3; Zhang, Jie1; Xu, Yi1; Dong, Shide2,3; Liu, Hanwen2,3; Jiang, Zewei1
刊名JOURNAL OF AGRONOMY AND CROP SCIENCE
出版日期2024-08-01
卷号210期号:4页码:12
关键词carbon flux global warming maize saline-alkali soil soybean wheat
ISSN号0931-2250
DOI10.1111/jac.12720
通讯作者Yang, Shihong(ysh7731@hhu.edu.cn)
英文摘要The carbon cycle of saline-alkali ecosystems will be affected to some extent in the context of future global warming. Therefore, we investigated the net ecosystem exchange (NEE) of three typical crops (wheat, maize and soybean) in the saline-alkaline land of the Yellow River Delta. To further investigate CO2 fluxes, NEE was decomposed into gross primary productivity (GPP) and ecosystem respiration (Re). In terms of seasonal variation, wheat and soybean were carbon sources in the early and late growth periods, and carbon sinks in the rest of the period, whereas maize was a carbon sink in the majority of the period, and maize had good carbon sink potential. The cumulative NEE during the growth periods for wheat, maize, and soybean were 414.86, 258.24 and 228.92 g cm-2, respectively, and the daily variation showed that the peak NEE values for the three crops preceded the peak values of both GPP and ecosystem respiration, occurring approximately at 12:00 a.m. In the correlation analysis, NEE and GPP of the three crops were well correlated with photosynthetic photon flux density and net radiation, whereas Re was significantly correlated with air temperature. Through a comparative analysis of CO2 fluxes within various agricultural ecosystems, our findings indicated that wheat demonstrated moderate carbon sequestration capabilities, whereas maize and soybean exhibited strong carbon sink characteristics. Notably, saline-alkali crops exhibited lower Re, whereas GPP levels remained at a moderate range. Therefore, under the global warming trend, the respiration of saline crops and soils will be affected and may change the original carbon sink into a carbon source. Hence, implementing suitable measures targeting saline-alkali areas, such as the establishment of an effective crop rotation system and the enhance saline-alkali land conditions, can reduce emissions of greenhouse gases, thus reducing the pressure of global warming and maintaining a stable carbon cycle in saline-alkali land.
WOS关键词GROSS PRIMARY PRODUCTION ; MAIZE ROTATION CROPLAND ; NET ECOSYSTEM EXCHANGE ; WINTER-WHEAT ; DIOXIDE EXCHANGE ; LOESS PLATEAU ; CO2 FLUXES ; CLIMATE ; BUDGET ; RESPIRATION
WOS研究方向Agriculture
语种英语
WOS记录号WOS:001258372700001
资助机构Key Research and Development Plan of Jiangsu Province ; Water Conservancy Science and Technology Project of Jiangxi Province ; National Natural Science Foundation of China ; Science & Technology Specific Projects in Agricultural High-tech Industrial Demonstration Area of the Yellow River Delta
源URL[http://ir.yic.ac.cn/handle/133337/35892]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_近岸生态与环境实验室
支撑部门_黄河三角洲盐碱地农田生态系统观测研究站
通讯作者Yang, Shihong
作者单位1.Hohai Univ, Coll Agr Sci & Engn, Nanjing, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yellow River Delta Saline Alkali Agroecosyst Obser, Dongying, Shandong, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Qiu, Haonan,Yang, Shihong,Wang, Guangmei,et al. Analysis of Carbon Flux Characteristics in Saline-Alkali Soil Under Global Warming[J]. JOURNAL OF AGRONOMY AND CROP SCIENCE,2024,210(4):12.
APA Qiu, Haonan.,Yang, Shihong.,Wang, Guangmei.,Liu, Xiaoling.,Zhang, Jie.,...&Jiang, Zewei.(2024).Analysis of Carbon Flux Characteristics in Saline-Alkali Soil Under Global Warming.JOURNAL OF AGRONOMY AND CROP SCIENCE,210(4),12.
MLA Qiu, Haonan,et al."Analysis of Carbon Flux Characteristics in Saline-Alkali Soil Under Global Warming".JOURNAL OF AGRONOMY AND CROP SCIENCE 210.4(2024):12.

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来源：烟台海岸带研究所

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