干旱区生态环境知识资源中心(Arid): Effects of plastic mulching on soil CO2 efflux in a cotton field in northwestern China

Arid

DOI	10.1038/s41598-022-08793-x
	Effects of plastic mulching on soil CO2 efflux in a cotton field in northwestern China
	Zhao, Zhimin; Shi, Fengxia; Guan, Fachun
通讯作者	Zhao, ZM
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2022
卷号	12 期号:1
英文摘要	In Northwestern China, more and more traditional cultivation system (TC) with no mulching and flood irrigation have been replaced by modern cultivation technology (MC) combining plastic film mulching with drip irrigation. Does plastic film mulching increase or reduce soil CO2 emission in arid areas? In order to study the effects of plastic mulching on soil CO2 efflux, a field study was conducted to compare soil CO2 concentration, soil CO2 efflux, soil temperature and moisture between the TC treatment and the MC treatment during a cotton growing season in Northwestern China. The seasonal patterns of soil profile temperature and soil moisture in the TC treatment were similar to that in the MC treatment. The mean value of soil profile temperature in the MC treatment was higher than that in the TC treatment. Except for soil moisture at 15 cm depth, the mean value of soil moisture at 5 cm and 10 cm depths in the MC treatment was higher than that in the TC treatment. The variation patterns of soil CO2 concentration and soil CO2 efflux in MC treatment were different to that in the TC treatment. Although the peak of soil CO2 concentration in the TC treatment was earlier than that in the MC treatment, the duration of soil CO2 concentration with high values in TC treatment was shorter than that in the MC treatment. Based on the model of Fick's first diffusion law, soil surface CO2 efflux in the MC and TC treatments were determined. The surface CO2 efflux in the TC treatment calculated by Fick's first diffusion law model was in good agreement with the value measured by chamber method. The seasonal curve of soil surface CO2 efflux in the MC treatment indicate the similar pattern with that in the TC treatment, and the rate of CO2 efflux was lower in the MC system. In the MC treatment, the seasonal variation of soil surface efflux was explained more by soil moisture than by soil temperature. However, in the TC treatment, the seasonal variation of soil surface efflux was explained more by soil temperature than by soil moisture. Over the completely experimental period, accumulated rates of soil CO2 efflux were 361 g C m(-2) and 474 g C m(-2) for the MC and TC system, respectively. We concluded that converting agricultural practices from traditional cultivation to the plastic mulching cultivation could reduce soil CO2 efflux by approximately 110 g C m(-2) year(-1) in agricultural land in arid areas of Northwestern China.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000772605500005
WOS关键词	CARBON-DIOXIDE ; PORE-SPACE ; LOESS PLATEAU ; TEMPERATURE-DEPENDENCE ; TEMPORAL VARIABILITY ; ROOT RESPIRATION ; ORGANIC-CARBON ; NITROUS-OXIDE ; SPRING WHEAT ; GAS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394428
推荐引用方式 GB/T 7714	Zhao, Zhimin,Shi, Fengxia,Guan, Fachun. Effects of plastic mulching on soil CO2 efflux in a cotton field in northwestern China[J],2022,12(1).
APA	Zhao, Zhimin,Shi, Fengxia,&Guan, Fachun.(2022).Effects of plastic mulching on soil CO2 efflux in a cotton field in northwestern China.SCIENTIFIC REPORTS,12(1).
MLA	Zhao, Zhimin,et al."Effects of plastic mulching on soil CO2 efflux in a cotton field in northwestern China".SCIENTIFIC REPORTS 12.1(2022).