Temperature sensitivity of soil organic matter mineralization decreases with long-term N fertilization: Evidence from four Q(10) estimation approaches
Zang, Huadong1,2; Blagodatskaya, Evgenia3; Wen, Yuan2; Shi, Lingling4,7; Cheng, Fei1; Chen, Haiqing1; Zhao, Bingqiang5; Zhang, Fusuo1; Fan, Mingsheng1; Kuzyakov, Yakov4,6
Corresponding AuthorFan, Mingsheng(fanms@cau.edu.cn)
2019-12-02
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
Pages11
AbstractClimate 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.
Keywordactivation energy carbon and nitrogen turnover nitrogen fertilization recalcitrant and labile carbon soil warming
DOI10.1002/ldr.3496
Indexed BySCI ; SCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000500075800001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/70429
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Corresponding AuthorFan, Mingsheng
Affiliation1.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
Recommended Citation
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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