干旱区生态环境知识资源中心(Arid): Response of Soil Organic Carbon and Its Aggregate Fractions to Long-Term Fertilization in Irrigated Desert Soil of China

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	Response of Soil Organic Carbon and Its Aggregate Fractions to Long-Term Fertilization in Irrigated Desert Soil of China
	Chai Yanjun; Zeng Xibai; E Shengzhe; Huang Tao; Che Zongxian; Su Shiming; Bai Lingyu
来源期刊	Journal of Integrative Agriculture
ISSN	2095-3119
出版年	2014
卷号	13 期号:12 页码:2758-2767
英文摘要	Irrigated desert soil samples in the Hexi Corridor of China were collected over a period of 23 years from a site where different fertilization methods had been used. Changes of soil organic carbon (SOC) and its water stable aggregate (WSA) size fractions were studied. The effects of various fertilization methods on the distribution of added organic carbon (OC) in different WSA size fractions were also analyzed. The results showed that the applied fertilizations for 23 years improved SOC concentrations and OC concentrations in all WSA size fractions compared to the non-fertilized treatment (CK). In addition, fertilization obviously increased the OC stocks of<2 mm WSA size fractions compared to the CK. The average OC stock of<0.053 mm WSA fraction was 1.7, 1.6 and 3.2 times higher than those of>2 mm, 0.25-2 mm and 0.053-0.25 mm WSA fractions, respectively. A signiifcant positive correlation was found between soil C gains and OC inputs (r=0.92, P<0.05), indicating that SOC may have not reached the saturation point yet at the site. The C sequestration rate was estimated by 14.02%at the site. The OC stocks in all of the<2 mm WSA fractions increased with the increase of OC input amounts;and the conversion rate of the input fresh OC to the OC stock of<0.053 mm WSA fraction was 1.2 and 2.6 times higher than those of the 0.25-2 mm and 0.053-0.25 mm WSA fractions, respectively. Therefore, the<0.053 mm WSA fraction was the most important component for soil C sequestration in the irrigated desert soil.
英文关键词	aggregate irrigated desert soil long-term fertilization organic carbon
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5318075
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335429
作者单位	Chai Yanjun, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing China.; Zeng Xibai, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing China.; Su Shiming, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing China.; Bai Lingyu, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing China.; E Shengzhe, Institute of Soil, Fertilizer and Water-saving Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China.; Huang Tao, Institute of Soil, Fertilizer and Water-saving Agriculture, Gansu...
推荐引用方式 GB/T 7714	Chai Yanjun,Zeng Xibai,E Shengzhe,et al. Response of Soil Organic Carbon and Its Aggregate Fractions to Long-Term Fertilization in Irrigated Desert Soil of China[J],2014,13(12):2758-2767.
APA	Chai Yanjun.,Zeng Xibai.,E Shengzhe.,Huang Tao.,Che Zongxian.,...&Bai Lingyu.(2014).Response of Soil Organic Carbon and Its Aggregate Fractions to Long-Term Fertilization in Irrigated Desert Soil of China.Journal of Integrative Agriculture,13(12),2758-2767.
MLA	Chai Yanjun,et al."Response of Soil Organic Carbon and Its Aggregate Fractions to Long-Term Fertilization in Irrigated Desert Soil of China".Journal of Integrative Agriculture 13.12(2014):2758-2767.