干旱区生态环境知识资源中心(Arid): Response of soil respiration and carbon budget to irrigation quantity/quality and biochar addition in a mulched maize field under drip irrigation

Arid

DOI	10.1002/jsfa.12993
	Response of soil respiration and carbon budget to irrigation quantity/quality and biochar addition in a mulched maize field under drip irrigation
	Chen, Yang; Wang, Lu; Tong, Ling; Hao, Xinmei; Ding, Risheng; Li, Sien; Kang, Shaozhong
通讯作者	Tong, L ; Hao, XM
来源期刊	JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
ISSN	0022-5142
EISSN	1097-0010
出版年	2024
卷号	104 期号:2 页码:1051-1062
英文摘要	BACKGROUNDBiochar addition strongly alters net carbon (C) balance in agroecosystems. However, the effects of biochar addition on net C balance of maize field under various irrigation water quantities and qualities remains unclear. Thus, a field experiment combining two irrigation levels of full (W1) and deficit irrigation (W2 = 1/2 W1), two water salinity levels of fresh (S0, 0.71 g L-1) and brackish water (S1, 4 g L-1), and two biochar addition rates of 0 t ha-1 (B0) and 60 t ha-1 (B1) was conducted to investigate soil carbon dioxide (CO2) emissions, maize C sequestration and C budget.RESULTSCompared with W1, W2 reduced average cumulative CO2 emissions by 6.5% and 19.9% for 2020 and 2021, respectively. The average cumulative CO2 emissions under W1S1 treatments were 5.4% and 22.3% lower than W1S0 for 2020 and 2021, respectively, whereas W2S0 and W2S1 had similar cumulative CO2 emissions in both years. Biochar addition significantly increased cumulative CO2 emissions by 17.8-23.5% for all water and salt treatments in 2020, and reduced average cumulative CO2 emissions by 11.9% for W1 but enhanced it by 8.0% for W2 in 2021. Except for W2S1, biochar addition effectively increased total maize C sequestration by 6.9-14.8% for the other three treatments through ameliorating water and salt stress over the 2 years. Compared with W1S0, W1S1 did not affect net C sequestration, but W2 treatments significantly decreased it. Biochar addition increased net C sequestration by 39.47-43.65 t C ha-1 for four water and salt treatments for the 2 years.CONCLUSIONThese findings demonstrate that biochar addition is an effective strategy to increase both crop C sequestration and soil C storage under suitable water-saving irrigation methods in arid regions with limited freshwater resources. (c) 2023 Society of Chemical Industry.
英文关键词	biochar deficit irrigation brackish water irrigation soil respiration carbon budget
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001081228600001
WOS关键词	GREENHOUSE-GAS EMISSIONS ; WATER-USE EFFICIENCY ; PHYSICAL-PROPERTIES ; DEFICIT IRRIGATION ; ORGANIC-CARBON ; CO2 EMISSIONS ; N2O EMISSIONS ; SALINE WATER ; YIELD ; CHINA
WOS类目	Agriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
WOS研究方向	Agriculture ; Chemistry ; Food Science & Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404740
推荐引用方式 GB/T 7714	Chen, Yang,Wang, Lu,Tong, Ling,et al. Response of soil respiration and carbon budget to irrigation quantity/quality and biochar addition in a mulched maize field under drip irrigation[J],2024,104(2):1051-1062.
APA	Chen, Yang.,Wang, Lu.,Tong, Ling.,Hao, Xinmei.,Ding, Risheng.,...&Kang, Shaozhong.(2024).Response of soil respiration and carbon budget to irrigation quantity/quality and biochar addition in a mulched maize field under drip irrigation.JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE,104(2),1051-1062.
MLA	Chen, Yang,et al."Response of soil respiration and carbon budget to irrigation quantity/quality and biochar addition in a mulched maize field under drip irrigation".JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 104.2(2024):1051-1062.