干旱区生态环境知识资源中心(Arid): Co-regulation of temperature and moisture in the irrigated agricultural ecosystem productivity

Arid

DOI	10.1016/j.agwat.2022.108016
	Co-regulation of temperature and moisture in the irrigated agricultural ecosystem productivity
	Wang, Chunyu; Li, Sien; Wu, Mousong; Zhang, Wenxin; Guo, Zhenyu; Huang, Siyu; Yang, Danni
通讯作者	Li, S
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	275
英文摘要	Agroecosystem photosynthesis is key to coping with global climate change. In farmland where human activities are highly involved, the interaction between environmental factors and their influences on gross primary pro-ductivity (GPP) are insufficiently understood. Particularly, the irrigation and mulching in water-saving agri-culture can alter the crop responses to environmental change. Based on eddy covariance measurements of maize fields under mulched drip irrigation (DM) and mulched border irrigation (BM) in arid areas of Northwest China from 2014 to 2018, we systematically studied the interaction between multiple environmental factors and their independent effects on GPP using structural equation modeling, partial correlation coefficient and decoupling analysis by bins. The top three factors exerting the largest total effects on the GPP were soil temperature (Ts), canopy temperature (Tc) and vapor pressure deficit (VPD), among which Ts (0.75) and Tc (0.66) had the largest total effect on GPP under DM and BM, respectively. The independent effects of Ts, soil water content (SWC) and VPD on GPP were different under the two irrigation methods. SWC after excluding the influence of Ts showed a negative effect on GPP under DM (-1.24 g Cm(-2)d(-1)), while a positive effect under BM (0.02 g Cm(-2)d(-1)). By contrast, SWC after excluding the influence of VPD showed a positive effect on GPP under DM (0.59 g Cm(-2)d(-1)), while a negative effect under BM (-0.05 g Cm(-2)d(-1)). Interestingly, higher Ts, lower SWC and higher VPD had the potential to increase GPP under the two irrigation methods. We also found that the total effects of irrigation and VPD as well as the indirect effects of environmental factors on GPP should not be ignored. Our study will provide important reference for dealing with the effect of high temperature and drought stress on agro-ecosystem GPP and evaluating the response of vegetation to environmental factors.
英文关键词	Gross primary productivity Soil temperature Soil water content Vapor pressure deficit Decoupling
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:000944885400003
WOS关键词	WATER-USE EFFICIENCY ; STOMATAL CONDUCTANCE ; CANOPY TEMPERATURE ; ATMOSPHERIC DEMAND ; CARBON-DIOXIDE ; TOMATO YIELD ; PART I ; DROUGHT ; SOIL ; RESPIRATION
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/2XILL650/395018
推荐引用方式 GB/T 7714	Wang, Chunyu,Li, Sien,Wu, Mousong,et al. Co-regulation of temperature and moisture in the irrigated agricultural ecosystem productivity[J],2023,275.
APA	Wang, Chunyu.,Li, Sien.,Wu, Mousong.,Zhang, Wenxin.,Guo, Zhenyu.,...&Yang, Danni.(2023).Co-regulation of temperature and moisture in the irrigated agricultural ecosystem productivity.AGRICULTURAL WATER MANAGEMENT,275.
MLA	Wang, Chunyu,et al."Co-regulation of temperature and moisture in the irrigated agricultural ecosystem productivity".AGRICULTURAL WATER MANAGEMENT 275(2023).