Effects of elevated O-3 and CO2 on the relative contribution of carbohydrates to soil organic matter in an agricultural soil

CORC > 东北地理与农业生态研究所 > 湿地生态系统管理学科组 > 期刊论文

	Effects of elevated O-3 and CO2 on the relative contribution of carbohydrates to soil organic matter in an agricultural soil
	C. Y. Lu, Y. H. Cao, C. R. He, X. L. Bao, R. Fang, Y. Z. Wang, X. Chen, Y. Shi and Q. Li
刊名	Soil & Tillage Research
	2016
卷号	159 页码:47-55
中文摘要	As labile fraction of soil organic matter, soil carbohydrates are sensitive to environmental changes due to their high turnover rates. The effects of elevated O-3 and CO2 on the concentration and composition of soil carbohydrates in agroecosystems have been rarely studied. The present experiment was conducted to investigate the dynamics of the concentration and composition of neutral sugars in soil under the influence of elevated O-3 and CO2 with different N application rates (150 kg N ha(-1) and 225 kg N ha(-1)). Our results showed that elevated O-3 decreased soil carbohydrate accumulation, with the effect being more pronounced with high than with low N application rate. Elevated O-3 significantly increased the ratio of (mannose + galactose)/(arabinose + xylose), indicating that elevated O-3 promoted the relative contribution of microbe-derived carbohydrates to soil organic matter (SOM). The high N application rate further increased the contribution of microbe-derived carbohydrates to SOM under elevated O-3 conditions. However, elevated CO2 had no effect on soil carbohydrate accumulation and little effects on carbohydrate composition in the study soil, regardless of N application rates. The elevated O-3-induced effects were not altered by elevated CO2 at the low N application rate, and the change in composition mediated by elevated CO2 was observed only at the high N application rate. Our results suggest that elevated O-3 affected soil carbohydrate accumulation and their composition and that the effects on composition were mediated by elevated CO2 and N application rates. (C) 2016 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.123.10/handle/131322/7010]
专题	东北地理与农业生态研究所_湿地生态系统管理学科组_期刊论文
推荐引用方式 GB/T 7714	C. Y. Lu, Y. H. Cao, C. R. He, X. L. Bao, R. Fang, Y. Z. Wang, X. Chen, Y. Shi and Q. Li. Effects of elevated O-3 and CO2 on the relative contribution of carbohydrates to soil organic matter in an agricultural soil[J]. Soil & Tillage Research,2016,159:47-55.
APA	C. Y. Lu, Y. H. Cao, C. R. He, X. L. Bao, R. Fang, Y. Z. Wang, X. Chen, Y. Shi and Q. Li.(2016).Effects of elevated O-3 and CO2 on the relative contribution of carbohydrates to soil organic matter in an agricultural soil.Soil & Tillage Research,159,47-55.
MLA	C. Y. Lu, Y. H. Cao, C. R. He, X. L. Bao, R. Fang, Y. Z. Wang, X. Chen, Y. Shi and Q. Li."Effects of elevated O-3 and CO2 on the relative contribution of carbohydrates to soil organic matter in an agricultural soil".Soil & Tillage Research 159(2016):47-55.