Dynamics of Soil Organic Carbon Fractions and Aggregates in Vegetable Cropping Systems

IMR OpenIR

	Dynamics of Soil Organic Carbon Fractions and Aggregates in Vegetable Cropping Systems
其他题名	Dynamics of Soil Organic Carbon Fractions and Aggregates in Vegetable Cropping Systems
	Liang ChengHua; Yin Yan; Chen Qian
	2014
发表期刊	PEDOSPHERE
ISSN	1002-0160
卷号	24 期号:5 页码:605-612
摘要	Fertilisers significantly affect crop production and crop biomass inputs to soil organic carbon (SOC). However, the long-term effects of fertilisers on C associated with aggregates are not yet fully understood. Based on soil aggregate and SO'C fractionation analysis, this study investigated the long-term effects of organic manure and inorganic fertilisers on the accumulation and change in SOC and its fractions, including the C concentrations of free light fraction, intra-aggregate particulate organic matter (POM) and intra-aggregate mineral-associated organic matter (MOM). Long-term manure applications improved SOC and increased the concentrations of some C fractions. Manure also accelerated the decomposition of coarse POM (cP0M) into fine POM (fP0M) and facilitated the transformation of fPOM encrustation into intra-microaggregate POM within macroaggregates. However, the application of inorganic fertilisers was detrimental to the formation of fPOM and to the subsequent encrustation of fPOM with clay particles, thus inhibiting the formation of stable microaggregates within macroaggregates. No significant differences were observed among the inorganic fertiliser treatments in terms of C concentrations of MOM, intra-microaggregate MOM within macroaggregate (imMMOM) and intra-microaggregate MOM (imMOM). However, the long-term application of manure resulted in large increases in C concentrations of MOM (36.35%), imMMOM (456.31%) and imMOM (19.33%) compared with control treatment.
其他摘要	Fertilisers significantly affect crop production and crop biomass inputs to soil organic carbon (SOC). However, the long-term effects of fertilisers on C associated with aggregates are not yet fully understood. Based on soil aggregate and SOC fractionation analysis, this study investigated the long-term effects of organic manure and inorganic fertilisers on the accumulation and change in SOC and its fractions, including the C concentrations of free light fraction, intra-aggregate particulate organic matter (POM) and intra-aggregate mineral-associated organic matter (MOM). Long-term manure applications improved SOC and increased the concentrations of some C fractions. Manure also accelerated the decomposition of coarse POM (cPOM) into fine POM (fPOM) and facilitated the transformation of fPOM encrustation into intra-microaggregate POM within macroaggregates. However, the application of inorganic fertilisers was detrimental to the formation of fPOM and to the subsequent encrustation of fPOM with clay particles, thus inhibiting the formation of stable microaggregates within macroaggregates. No significant differences were observed among the inorganic fertiliser treatments in terms of C concentrations of MOM, intra-microaggregate MOM within macroaggregate (imMMOM) and intra-microaggregate MOM (imMOM). However, the long-term application of manure resulted in large increases in C concentrations of MOM (36.35%), imMMOM (456.31%) and imMOM (19.33%) compared with control treatment.
关键词	NITROGEN-FERTILIZATION CULTIVATED SOILS C SEQUESTRATION MATTER TILLAGE STORAGE IMPACT AGRICULTURE PARTICULATE MANAGEMENT long-term fertilization physical fractionation soil aggregates soil organic matter
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Fifth Session of Geping Green Action-123 Project of Liaoning Environmental Research and Education] ; [Innovative Graduate Training Program of Shenyang Agricultural University of China]
CSCD记录号	CSCD:5259645
引用统计	被引频次：5[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/150989
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Liang ChengHua,Yin Yan,Chen Qian. Dynamics of Soil Organic Carbon Fractions and Aggregates in Vegetable Cropping Systems[J]. PEDOSPHERE,2014,24(5):605-612.
APA	Liang ChengHua,Yin Yan,&Chen Qian.(2014).Dynamics of Soil Organic Carbon Fractions and Aggregates in Vegetable Cropping Systems.PEDOSPHERE,24(5),605-612.
MLA	Liang ChengHua,et al."Dynamics of Soil Organic Carbon Fractions and Aggregates in Vegetable Cropping Systems".PEDOSPHERE 24.5(2014):605-612.