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

doi:10.1111/jac.12720

	Analysis of Carbon Flux Characteristics in Saline-Alkali Soil Under Global Warming
	Qiu, Haonan 1; Yang, Shihong 1; Wang, Guangmei2,3 ; Liu, Xiaoling 2,3; Zhang, Jie 1; Xu, Yi 1; Dong, Shide 2,3; Liu, Hanwen 2,3; Jiang, Zewei 1
发表期刊	JOURNAL OF AGRONOMY AND CROP SCIENCE
ISSN	0931-2250
	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
DOI	10.1111/jac.12720
通讯作者	Yang, Shihong([email protected])
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.
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
收录类别	SCI
语种	英语
关键词[WOS]	GROSS PRIMARY PRODUCTION ; MAIZE ROTATION CROPLAND ; NET ECOSYSTEM EXCHANGE ; WINTER-WHEAT ; DIOXIDE EXCHANGE ; LOESS PLATEAU ; CO2 FLUXES ; CLIMATE ; BUDGET ; RESPIRATION
研究领域[WOS]	Agriculture
WOS记录号	WOS:001258372700001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/35893
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室支撑部门_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, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yellow River Delta Saline Alkali Agroecosyst Obser, Dongying, 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.