气候变化领域集成服务门户(CCPortal): Effects of long-term application of inorganic fertilizer and organic amendments on the amounts of fractionated soil organic carbon and their determining factors in paddy fields

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DOI	10.1080/00380768.2024.2320393
	Effects of long-term application of inorganic fertilizer and organic amendments on the amounts of fractionated soil organic carbon and their determining factors in paddy fields
	Nishimura, Chinari; Yanai, Junta; Nakao, Atsushi; Ando, Kaori; Oga, Toshiya; Otake, Toshiya; Taki, Katsutoshi; Kasuya, Masahiro; Takayama, Takayuki; Hasukawa, Hiroyuki; Takehisa, Kunihiko; Takahashi, Tomoki; Togami, Kazuki; Takamoto, Akira; Funakawa, Shinya
发表日期	2024
ISSN	0038-0768
EISSN	1747-0765
起始页码	70
结束页码	3
卷号	70 期号:3
英文摘要	To investigate how the long-term application of inorganic fertilizer and organic amendments affects the accumulation of organic matter in physico-chemically fractionated components in paddy soils and how the accumulation is determined by soil properties and anthropogenic carbon input, we studied the effect of variable management of inorganic fertilizer and organic amendments for > 50 years on the amounts of accumulated soil organic carbon (SOC) in fractionated components in three paddy fields. SOC was fractionated into four components based on their physical and chemical properties: (1) light fraction (LF) derived from plant residues, (2) heavy fraction (HF) containing stable aggregates, (3) oxidizable fraction (OxF) and (4) non-oxidizable fraction (NOxF) forming organo-mineral complexes with fine-textured minerals. On average, the amount and percentage of accumulated C in the four fractions were as follows: OxF (6.63 gC kg(soil)(-1), 46%) > NOxF (5.32, 35) > LF (1.68, 12) > HF (1.12, 7.2), suggesting about 80% of SOC was in fine, stable fractions. The amount of accumulated C in all fractions increased slightly with the application of inorganic fertilizer, while it increased considerably with the use of organic amendments. In addition, the application of fertilizers and amendments raised the proportion of C content in LF and HF, which are labile and related to soil fertility. Stepwise multiple regression analysis using two principal component analysis scores of soil properties and anthropogenic C input further revealed that the labile fractions (LF and HF) were more strongly determined by the management of fertilizers and amendments, while the stable fractions (OxF and NOxF) were more strongly determined by soil-specific properties, mainly the amorphous nature of the soil. These results indicate that the use of certain amounts of organic amendments would be recommended to carry out rational management to improve soil fertility and C sequestration in paddy fields, with the application of amorphous minerals as an additional option.
英文关键词	Amorphous minerals; carbon sequestration; fertility; paddy soils; soil organic carbon (SOC)
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
WOS类目	Plant Sciences ; Environmental Sciences ; Soil Science
WOS记录号	WOS:001178868400001
来源期刊	SOIL SCIENCE AND PLANT NUTRITION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303891
作者单位	Kyoto Prefectural University; National Agriculture & Food Research Organization - Japan; Kyoto University; Kyoto Prefectural University
推荐引用方式 GB/T 7714	Nishimura, Chinari,Yanai, Junta,Nakao, Atsushi,et al. Effects of long-term application of inorganic fertilizer and organic amendments on the amounts of fractionated soil organic carbon and their determining factors in paddy fields[J],2024,70(3).
APA	Nishimura, Chinari.,Yanai, Junta.,Nakao, Atsushi.,Ando, Kaori.,Oga, Toshiya.,...&Funakawa, Shinya.(2024).Effects of long-term application of inorganic fertilizer and organic amendments on the amounts of fractionated soil organic carbon and their determining factors in paddy fields.SOIL SCIENCE AND PLANT NUTRITION,70(3).
MLA	Nishimura, Chinari,et al."Effects of long-term application of inorganic fertilizer and organic amendments on the amounts of fractionated soil organic carbon and their determining factors in paddy fields".SOIL SCIENCE AND PLANT NUTRITION 70.3(2024).