Temperature sensitivity of soil organic matter mineralization decreases with long-term N fertilization: Evidence from four Q(10) estimation approaches

doi:10.1002/ldr.3496

	Temperature sensitivity of soil organic matter mineralization decreases with long-term N fertilization: Evidence from four Q(10) estimation approaches
	Zang, Huadong 1,2; Blagodatskaya, Evgenia 3; Wen, Yuan 2; Shi, Lingling 4,7; Cheng, Fei 1; Chen, Haiqing 1; Zhao, Bingqiang 5; Zhang, Fusuo 1; Fan, Mingsheng 1; Kuzyakov, Yakov 4,6
通讯作者	Fan, Mingsheng(fanms@cau.edu.cn)
	2019-12-02
发表期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
页码	11
摘要	Climate warming and anthropogenic nitrogen (N) loads are two major global change components interactively affecting carbon cycling. However, the effects of N forms and amounts on temperature sensitivity (Q(10)) of soil organic matter (SOM) mineralization remain incomplete. With this goal, soil was sampled after 23 years of mineral and (or) organic N fertilization, and then incubated for one year at 10, 20, and 30 degrees C. For the first time, we compared four approaches (Equal time, Equal C, 1-C pool, and 2-C pool model) to evaluate the Q(10) of SOM mineralization. All approaches showed that the Q(10) decreased by more than one third with N fertilization compared to unfertilized control at low temperatures. The '1-C pool model' was not adequate for Q(10) estimation with various C availability. The Q(10) estimated by '2-C pool model' was strongly depended on incubation duration. The 'Equal C' approach was more powerful for separating SOM pools and it revealed the decreased Q(10) of the recalcitrant pool at high N rates. The impact of N fertilization on Q(10) was more evident at high N than at low N. Notably, the Q(10) decreased more by mineral N compared to organic fertilizers (similar to 60% vs. similar to 40% decreased in Q(10)) at 10-20(o)C. The added benefit of N fertilization in protecting SOM under climate warming was demonstrated by decreased Q(10). Such one-third reduction of temperature sensitivity by N fertilization is large enough to be considered in predictions of global SOM stocks under warming and anthropogenic N loads.
关键词	activation energy carbon and nitrogen turnover nitrogen fertilization recalcitrant and labile carbon soil warming
DOI	10.1002/ldr.3496
收录类别	SCI ; SCI
语种	英语
WOS记录号	WOS:000500075800001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/70429
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Fan, Mingsheng
作者单位	1.China Agr Univ, Coll Resources & Environm Sci, Key Lab Plant Soil Interact, Minist Educ, Beijing 100193, Peoples R China 2.China Agr Univ, Coll Agron & Biotechnol, Beijing 100193, Peoples R China 3.UFZ Helmholtz Ctr Environm Res, Dept Soil Ecol, D-06120 Halle, Saale, Germany 4.Univ Gottingen, Dept Agr Soil Sci, Busgenweg 2, D-37077 Gottingen, Germany 5.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 6.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia 7.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zang, Huadong,Blagodatskaya, Evgenia,Wen, Yuan,et al. Temperature sensitivity of soil organic matter mineralization decreases with long-term N fertilization: Evidence from four Q(10) estimation approaches[J]. LAND DEGRADATION & DEVELOPMENT,2019:11.
APA	Zang, Huadong.,Blagodatskaya, Evgenia.,Wen, Yuan.,Shi, Lingling.,Cheng, Fei.,...&Kuzyakov, Yakov.(2019).Temperature sensitivity of soil organic matter mineralization decreases with long-term N fertilization: Evidence from four Q(10) estimation approaches.LAND DEGRADATION & DEVELOPMENT,11.
MLA	Zang, Huadong,et al."Temperature sensitivity of soil organic matter mineralization decreases with long-term N fertilization: Evidence from four Q(10) estimation approaches".LAND DEGRADATION & DEVELOPMENT (2019):11.

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