干旱区生态环境知识资源中心(Arid): Relationship of winter wheat phenology with carbon and water flux and influencing factors in the North China Plain

Arid

DOI	10.1016/j.compag.2024.109034
	Relationship of winter wheat phenology with carbon and water flux and influencing factors in the North China Plain
	Wu, Jiujiang; Wang, Nan; Xing, Xuguang; Ma, Xiaoyi
通讯作者	Xing, XG ; Ma, XY
来源期刊	COMPUTERS AND ELECTRONICS IN AGRICULTURE
ISSN	0168-1699
EISSN	1872-7107
出版年	2024
卷号	222
英文摘要	Evaluating the relationship between plant phenology and the carbon-water cycle is essential to understanding regional ecological functional mechanisms and formulating ecological management policies under climate change. The North China Plain (NCP) is a region where more than half of the land area is devoted to winter wheat cultivation. Thus, this study aimed to investigate the factors influencing carbon-water flux and its relationship with winter wheat phenology in the NCP. Carnegie-Ames-Stanford Approach model was used to evaluate winter wheat net primary production (NPP), the evapotranspiration (ET) of winter wheat was calculated using the Penman-Monteith equation, and the ecological water use efficiency (EWUE) was calculated as the NPP to ET ratio in this study. We found that winter wheat with different phenological dates, NPP, ET, and EWUE exhibited spatial heterogeneity in the NCP. The growth period of winter wheat increases from south to north, and the areas at which advanced green-up, heading, and maturity are observed accounted for 81.8 %, 73.6 %, and 51.3 % of the total area, respectively. During the growth period of winter wheat, EWUE increased over time (0.01 g C/ m-- 2 (- \|-) mm-1 year- 1 ); this was mainly because the increase of NPP (0.469 g C/m-- 2 (- \|-) year- 1 ) was greater than the increase of ET (0.44 mm year- 1 ). In different temperature and precipitation zones, growing season length was positively correlated with ET although no consistent NPP pattern was identified. The effects of climate and phenological length on NPP and ET differed by phenological stage and in arid areas. However, generally, vapor pressure deficit was a key regulatory factor of carbon-water flux in winter wheat, indicating that climate factors mediate the transpiration and photosynthesis of winter wheat by influencing vapor pressure deficit to regulate leaf stomatal opening and closing. Our results have implications for regional policy making and field management.
英文关键词	Winter wheat Net primary production Ecological water use efficiency North China Plain Phenology
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001292366800001
WOS关键词	NET PRIMARY PRODUCTION ; TIBETAN PLATEAU ; SOLAR-RADIATION ; CLIMATE-CHANGE ; REQUIREMENT ; RESPONSES
WOS类目	Agriculture, Multidisciplinary ; Computer Science, Interdisciplinary Applications
WOS研究方向	Agriculture ; Computer Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403254
推荐引用方式 GB/T 7714	Wu, Jiujiang,Wang, Nan,Xing, Xuguang,et al. Relationship of winter wheat phenology with carbon and water flux and influencing factors in the North China Plain[J],2024,222.
APA	Wu, Jiujiang,Wang, Nan,Xing, Xuguang,&Ma, Xiaoyi.(2024).Relationship of winter wheat phenology with carbon and water flux and influencing factors in the North China Plain.COMPUTERS AND ELECTRONICS IN AGRICULTURE,222.
MLA	Wu, Jiujiang,et al."Relationship of winter wheat phenology with carbon and water flux and influencing factors in the North China Plain".COMPUTERS AND ELECTRONICS IN AGRICULTURE 222(2024).