Long-term non-phosphorus application increased paddy methane emission by promoting organic acid and methanogen abundance in Tai Lake region, China

doi:10.1016/j.scitotenv.2022.161146

	Long-term non-phosphorus application increased paddy methane emission by promoting organic acid and methanogen abundance in Tai Lake region, China
	Xu, Chen 1,2; Shen, Susu 1,3; Zhou, Beibei 4; Feng, Yuanyuan 1; He, Zhu 1,3; Shi, Linlin 5; Wang, Yu 6; Wang, Haihou 5; Mishra, Tripti 1; Xue, Lihong 1,2,3,7
	2023-03-15
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	864
摘要	Rice paddy is a significant source of atmospheric methane (CH4), a major global warming source. CH4 emission from paddy fields is greatly influenced by phosphorus (P) management, especially the long-term non-P application on CH4 emission is largely unexplored. In the present study, long-term non-P application (NK) and P application (NPK) treatments of two paddy fields in Suzhou (from 1980) and Yixing (from 2009), Tai Lake region was done. The effect of P application on CH4 emissions and related microorganisms (i.e., methanogens and methanotrophs) from 2019 to 2020 was analyzed. Results revealed that long-term NK treatment didn't alter the seasonal trend of CH4 flux, but significantly promoted CH4 emissions at the tillering stage. The non-P application for >12 years caused the cumulative CH4 emissions of NK treatment in the whole rice season significantly increased by 41.9-221 % in two fields compared to NPK treatment in 2019 and 2020. NK treatment increased the abundance and diversity of methanogens, while reducing the abundance and diversity of methanotrophs. Community composition of soil pmoA gene differed in two experiment sites. Correlation analysis revealed that the CH4 emission was significant and positively related to soil mcrA gene and C/P while negatively related to soil pmoA gene and P. Structure equation model analysis show the low soil available P content was the dominant driving factor for the high CH4 emission under long-term non-P application through its direct impact on soil mcrA and pmoA genes. The increased soil organic acid content was another driver which was positively related to soil mcrA gene and negatively to soil pmoA gene. Our findings demonstrate the impor- tant role of soil P in regulating CH4 emissions from paddy fields in the Tai Lake region, China, and suitable P applica- tion is necessary for ensuring the yield while reducing CH4 emission.
关键词	Phosphorus TROPICAL RICE-FIELD Paddy field METHANOTROPHIC COMMUNITIES Methane emission ELEVATED CO2 Methanogen SOIL Methanotroph CH4 FERTILIZATION ARCHAEA BACTERIAL DYNAMICS IMPACT
DOI	10.1016/j.scitotenv.2022.161146
收录类别	SCIE
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000913674100001
出版者	ELSEVIER
原始文献类型	Article ; Early Access
EISSN	1879-1026
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/168628
专题	国家开放大学江苏分部
通讯作者	Xue, Lihong
作者单位	1.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Agro Environm Downstream Yangtze Plain, Nanjing 210014, Peoples R China; 2.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212001, Peoples R China; 3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Peoples R China; 4.Jiangsu Open Univ, Coll Environm & Ecol, Nanjing 210017, Peoples R China; 5.Suzhou Acad Agr Sci, Natl Agr Expt Stn Soil Qual, Suzhou 215105, Peoples R China; 6.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China; 7.Jiangsu Acad Agr Sci, 50 Zhongling St, Nanjing 210014, Peoples R China
推荐引用方式 GB/T 7714	Xu, Chen,Shen, Susu,Zhou, Beibei,et al. Long-term non-phosphorus application increased paddy methane emission by promoting organic acid and methanogen abundance in Tai Lake region, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,864.
APA	Xu, Chen.,Shen, Susu.,Zhou, Beibei.,Feng, Yuanyuan.,He, Zhu.,...&Xue, Lihong.(2023).Long-term non-phosphorus application increased paddy methane emission by promoting organic acid and methanogen abundance in Tai Lake region, China.SCIENCE OF THE TOTAL ENVIRONMENT,864.
MLA	Xu, Chen,et al."Long-term non-phosphorus application increased paddy methane emission by promoting organic acid and methanogen abundance in Tai Lake region, China".SCIENCE OF THE TOTAL ENVIRONMENT 864(2023).