Long-term fertilization increases the temperature sensitivity of OC mineralization in soil aggregates of a highland agroecosystem
文献类型：期刊论文
| 作者 | XiaorongWei1; Tiane Ma1; YuhongWang1,2; YanchunWei1; MingdeHao1; Mingan Shao1; Xingchang Zhang1 |
| 刊名 | Geoderma
 |
| 出版日期 | 2016-04-10 |
| 期号 | 272页码:1-9 |
| 通讯作者邮箱 | xrwei78@163.com |
| 关键词 | Highland farmland Manure fertilizer Mineral fertilizer OC mineralization Soil water-stable aggregates Temperature sensitivity |
| 通讯作者 | XiaorongWei |
| 英文摘要 |
The mineralization of aggregate-associated organic carbon (OC) and the effect of long-term fertilization on its
temperature sensitivity have not been addressed, but are critical for understandingOC sequestration and dynamics
in agricultural soil. We measured themineralization of OC in total soils and aggregates after 27 years of application
of various fertilizers in a highland agroecosystem in central China and calculated the temperature
sensitivity of OC mineralization. Our objectives were to understand the effects of long-term fertilization on OC
mineralization in aggregates and its temperature sensitivity, and to determine the contribution of each aggregate
size class to OCmineralization in total soils. Long-term fertilization decreased cumulative mineralized OC (Cmin)
in b0.053 mm size class but increased Cmin in N2, 0.25–2, and 0.053–0.25 mm aggregates. The increases were
smaller in treatments with mineral fertilizers than with manure or manure combined with mineral fertilizer.
The temperature sensitivity of OCmineralizationwas decreased in N2mmaggregate but increased in b2mmaggregates
and total soils by fertilization treatments. The OC mineralization in b0.053 mmsize class accounted for
36% of the OC mineralization in total soils.Manure ormanure combined with mineral fertilizer had a higher potential
to change the contribution of aggregates to OC mineralization in total soils. Our results suggest that OC
mineralization in total soils was determinedmainly bymineralization in the b0.053mmsize class of these highland
agricultural soils, and long-term fertilization increased the temperature sensitivity of OC mineralization in
total soils and b2 mm aggregates. |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S0016706116300878 |
| 语种 | 英语 |
| WOS记录号 | WOS:000374077500001 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/7757]  |
| 专题 | 水土保持研究所_水保所科研产出--SCI_2016--SCI |
| 作者单位 | 1.State Key Laboratory of Soil Erosion and Dryland Farming in the Loess Plateau, Northwest A&F University, Yangling 712100, China 2.Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China |
| 推荐引用方式 GB/T 7714 | XiaorongWei,Tiane Ma,YuhongWang,et al. Long-term fertilization increases the temperature sensitivity of OC mineralization in soil aggregates of a highland agroecosystem[J]. Geoderma,2016(272):1-9. |
| APA | XiaorongWei.,Tiane Ma.,YuhongWang.,YanchunWei.,MingdeHao.,...&Xingchang Zhang.(2016).Long-term fertilization increases the temperature sensitivity of OC mineralization in soil aggregates of a highland agroecosystem.Geoderma(272),1-9. |
| MLA | XiaorongWei,et al."Long-term fertilization increases the temperature sensitivity of OC mineralization in soil aggregates of a highland agroecosystem".Geoderma .272(2016):1-9. |
入库方式： OAI收割
来源：水土保持研究所
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