干旱区生态环境知识资源中心(Arid): Effect of mulched drip irrigation on crop biomass and carbon fluxes in maize field

Arid

DOI	10.1016/j.agwat.2024.109016
	Effect of mulched drip irrigation on crop biomass and carbon fluxes in maize field
	Guo, Hui; Wang, Xuhui; Wang, Yahui; Li, Sien
通讯作者	Li, S
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2024
卷号	303
英文摘要	The agroecosystem, a critical component of the terrestrial carbon cycle, plays an indispensable role in maintaining the balance of carbon pools and ensuring global food security. Investigating the interplay between crop yield and carbon cycle is essential for the advancement of sustainable agricultural practices. In the quest for water-efficient agricultural solutions, mulched drip irrigation emerges as a promising technique to mitigate water scarcity in agriculture. In the arid regions of northwest China, where water is a precious resource, understanding the impact of irrigation methods on the productivity and carbon dynamics of crops like spring maize is critical. Our study aimed to evaluate the influence of two irrigation methods-mulched drip irrigation (DI) and mulched border irrigation (BI)-on the biomass accumulation and carbon fluxes of spring maize by field observation and DNDC model simulation for comparative analysis. The findings based on field and flux observation data, underscore the transformative potential of shifting from BI to DI. DI was found to significantly enhance the soil's hydrothermal environment, which is crucial for fostering optimal conditions for crop growth. This improvement is instrumental in promoting the allocation of photosynthetic products to the aboveground biomass, ultimately leading to a substantial increase in grain yield. Our results indicated that the DI treatment not only bolstered the gross primary productivity (GPP) but also elevated the ecosystem respiration (RE) compared to the BI treatment. Finally, DI can increase the net ecosystem productivity (NEP) of maize fields by 6.08 %. The Denitrification-Decomposition (DNDC) model, after calibration and validation, proved to be a reliable tool for estimating ecosystem respiration under the two irrigation systems. A thorough analysis of the simulated data revealed that DI's enhancement of the soil's hydrothermal environment also led to an increase in soil heterotrophic respiration. This insight is vital as it sheds light on the complex interactions between irrigation practices and soil microbial processes, which are integral to the carbon cycle. These findings contribute to the growing body of knowledge on sustainable agricultural practices and provide a theoretical foundation for strategies aimed at achieving carbon neutrality. By adopting data-driven approaches and leveraging advanced models, we can pave the way for a more sustainable and resilient agricultural future that harmoniously balances productivity and environmental stewardship.
英文关键词	Irrigation methods Crop biomass Carbon flux DNDC model
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001301575200001
WOS关键词	WATER-USE EFFICIENCY ; FOOD SECURITY ; MODEL ; CHINA ; EMISSIONS ; ECOSYSTEM ; DNDC ; SEQUESTRATION ; RESPIRATION ; SIMULATION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402696
推荐引用方式 GB/T 7714	Guo, Hui,Wang, Xuhui,Wang, Yahui,et al. Effect of mulched drip irrigation on crop biomass and carbon fluxes in maize field[J],2024,303.
APA	Guo, Hui,Wang, Xuhui,Wang, Yahui,&Li, Sien.(2024).Effect of mulched drip irrigation on crop biomass and carbon fluxes in maize field.AGRICULTURAL WATER MANAGEMENT,303.
MLA	Guo, Hui,et al."Effect of mulched drip irrigation on crop biomass and carbon fluxes in maize field".AGRICULTURAL WATER MANAGEMENT 303(2024).