干旱区生态环境知识资源中心(Arid): Mineralization and Fixed Stable Carbon Isotopic Characteristics of Organic Carbon in Cotton Fields with Different Continuous Cropping Years

Arid

DOI	10.3390/agronomy13030804
	Mineralization and Fixed Stable Carbon Isotopic Characteristics of Organic Carbon in Cotton Fields with Different Continuous Cropping Years
	Ma, Xinyu; Gong, Lu; Yang, Yuxin; Ding, Zhaolong; Li, Xinzhu
通讯作者	Gong, L
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2023
卷号	13 期号:3
英文摘要	The oasis carbon pool in arid zones is an important part of the global carbon pool. There is a soil organic carbon (SOC)-soil-CO2-soil inorganic carbon (SIC) balanced system in the soil, which facilitates the change from soil organic carbon to soil inorganic carbon. A small change in the soil carbon pool can affect the overall global carbon balance, thus affecting the conversion of soil carbon in terrestrial ecosystems. In this study, the change from soil organic carbon to soil inorganic carbon (SIC) was obtained by measuring the delta C-13 values of SIC and CO2 in combination with stable carbon isotope techniques in cotton fields with different continuous cropping years, in the Alar Reclamation Area. Additionally, this was combined with redundancy analysis to reveal the effects of different physicochemical factors on the change amount. The results showed that the soil inorganic carbon content along the soil profile showed an increasing trend, while the soil organic carbon content was the opposite; the delta C-13 of SIC in the 0-20 and 60-80 cm soil layers were the highest in the 10a continuous cotton field soil, which were -22.24 and -21.86 parts per thousand, respectively, and significantly different to other types (p < 0.05). The fixed carbon values in the barren, 5a, 10a, 20a, and 30a continuous cotton fields were 0.53, 0.17, 0.11, 0.13 and 0.33 g center dot kg(-1), respectively; the corresponding amounts of CO2 fixed from soil respiration were 0.33, 0.11, 0.08, 0.05, and 0.25 g center dot kg(-1); the amounts of CO2 from the atmosphere were 0.20, 0.06, 0.03, 0.02, and 0.09 g center dot kg(-1); and the oxidative decomposition of CO2 by SOC were 0.17, 0.06, 0.04, 0.26, and 0.12 g center dot kg(-1), respectively, indicating that the contribution of SOC was more in the barren field and 30a cotton field. Comparing the sources of fixed CO2, we found that the amount of fixed soil from barren fields and 30a was high from atmospheric CO2, while the contribution of SOC was low. Furthermore, the amount of fixed CO2 of 20a from SOC was high, and the atmospheric contribution was low. The main physicochemical factors that affecting the amount of soil SOC changed to SIC were soil water content, readily available carbon dioxide, and microbial biomass carbon.
英文关键词	organic carbon inorganic carbon stable carbon isotope technology oasis cotton field
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000954010000001
WOS关键词	HEXI CORRIDOR REGION ; VERTICAL-DISTRIBUTION ; AGGREGATE STABILITY ; INORGANIC CARBON ; SOIL CARBON ; LAND-USE ; FERTILIZATION ; CULTIVATION ; VEGETATION ; NITROGEN
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395196
推荐引用方式 GB/T 7714	Ma, Xinyu,Gong, Lu,Yang, Yuxin,et al. Mineralization and Fixed Stable Carbon Isotopic Characteristics of Organic Carbon in Cotton Fields with Different Continuous Cropping Years[J],2023,13(3).
APA	Ma, Xinyu,Gong, Lu,Yang, Yuxin,Ding, Zhaolong,&Li, Xinzhu.(2023).Mineralization and Fixed Stable Carbon Isotopic Characteristics of Organic Carbon in Cotton Fields with Different Continuous Cropping Years.AGRONOMY-BASEL,13(3).
MLA	Ma, Xinyu,et al."Mineralization and Fixed Stable Carbon Isotopic Characteristics of Organic Carbon in Cotton Fields with Different Continuous Cropping Years".AGRONOMY-BASEL 13.3(2023).