干旱区生态环境知识资源中心(Arid): Farmland Carbon and Water Exchange and Its Response to Environmental Factors in Arid Northwest China

Arid

DOI	10.3390/land12111988
	Farmland Carbon and Water Exchange and Its Response to Environmental Factors in Arid Northwest China
	Zheng, Xinqian; Yang, Fan; Mamtimin, Ali; Huo, Xunguo; Gao, Jiacheng; Ji, Chunrong; Abudukade, Silalan; Li, Chaofan; Sun, Yingwei; Wang, Wenbiao; Cui, Zhengnan; Wang, Yu; Ma, Mingjie; Huo, Wen; Zhou, Chenglong; Yang, Xinghua
通讯作者	Yang, F
来源期刊	LAND
EISSN	2073-445X
出版年	2023
卷号	12 期号:11
英文摘要	Carbon neutrality is an important target in China's efforts to combat the climate crisis. The implementation of carbon neutrality requires high crop yields in farmland ecosystems of arid regions. However, the responses of farmland ecosystems to environmental changes and their effects on the conversion and intensity of carbon sources/sinks within farmlands in arid regions remain unclear, which limits carbon sequestration. In this study, we used a set of eddy covariance systems to observe carbon and water fluxes in cotton and spring maize, two typical crops in arid regions of Northern Xinjiang in China. The carbon and water exchange and water use efficiency (WUE) of cotton and spring maize were evaluated over the entire growth cycle with respect to changes in the environment. Our results show that the carbon sequestration capacity of farmland ecosystems in arid regions is undeniable and is strongly influenced by the growth and development of plants. Spring maize, as a representative of C4 plants, exhibited a 58.4% higher carbon sequestration efficiency than cotton, a C3 plant, and they both reached their carbon sequestration efficiency peak in July. Throughout the growth period, temperature, net surface radiation, and saturated vapor pressure differences (VPD) significantly affected the carbon sequestration capacity and WUE of both crops. Optimal temperatures can maximize the carbon sequestration efficiency of cotton and spring maize; for cotton, they are 20-25 degrees C, and for spring maize, they are 22-27 degrees C, respectively. In addition, it is recommended that spring maize be harvested at the end of July when it meets the harvesting standards for silage feed and achieves the maximum carbon sequestration. Afterward, winter crops should be planted to maximize the yield and improve the carbon sequestration capacity of farmlands.
英文关键词	CO2 flux cotton field maize field eddy covariance water use efficiency
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:001119461500001
WOS关键词	DIOXIDE EXCHANGE ; TERRESTRIAL ECOSYSTEMS ; SONIC ANEMOMETER ; WINTER-WHEAT ; MAIZE ; EVAPOTRANSPIRATION ; CLIMATE ; CROP ; DYNAMICS ; FLUXES
WOS类目	Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397703
推荐引用方式 GB/T 7714	Zheng, Xinqian,Yang, Fan,Mamtimin, Ali,et al. Farmland Carbon and Water Exchange and Its Response to Environmental Factors in Arid Northwest China[J],2023,12(11).
APA	Zheng, Xinqian.,Yang, Fan.,Mamtimin, Ali.,Huo, Xunguo.,Gao, Jiacheng.,...&Yang, Xinghua.(2023).Farmland Carbon and Water Exchange and Its Response to Environmental Factors in Arid Northwest China.LAND,12(11).
MLA	Zheng, Xinqian,et al."Farmland Carbon and Water Exchange and Its Response to Environmental Factors in Arid Northwest China".LAND 12.11(2023).