Carbon sequestration and turnover in soil under the energy crop Miscanthus: repeated C-13 natural abundance approach and literature synthesis
Zang, HD; Blagodatskaya, E; Wen, Y; Xu, XL; Dyckmans, J; Kuzyakov, Y
2018
Source PublicationGLOBAL CHANGE BIOLOGY BIOENERGY
ISSN1757-1693
Volume10Issue:4Pages:262-271
AbstractThe stability and turnover of soil organic matter (SOM) are a very important but poorly understood part of carbon (C) cycling. Conversion of C-3 grassland to the C-4 energy crop Miscanthus provides an ideal opportunity to quantify medium-term SOM dynamics without disturbance (e.g., plowing), due to the natural shift in the C-13 signature of soil C. For the first time, we used a repeated C-13 natural abundance approach to measure C turnover in a loamy Gleyic Cambisol after 9 and 21years of Miscanthus cultivation. This is the longest C-3-C-4 vegetation change study on C turnover in soil under energy crops. SOM stocks under Miscanthus and reference grassland were similar down to 1m depth. However, both increased between 9 and 21years from 105 to 140mgCha(-1) (P<0.05), indicating nonsteady state of SOM. This calls for caution when estimating SOM turnover based on a single sampling. The mean residence time (MRT) of old C (>9years) increased with depth from 19years (0-10cm) to 30-152years (10-50cm), and remained stable below 50cm. From 41 literature observations, the average SOM increase after conversion from cropland or grassland to Miscanthus was 6.4 and 0.4mgCha(-1), respectively. The MRT of total C in topsoil under Miscanthus remained stable at similar to 60years, independent of plantation age, corroborating the idea that C dynamics are dominated by recycling processes rather than by C stabilization. In conclusion, growing Miscanthus on C-poor arable soils caused immediate C sequestration because of higher C input and decreased SOM decomposition. However, after replacing grasslands with Miscanthus, SOM stocks remained stable and the MRT of old C-3-C increased strongly with depth.
SubtypeJournal
KeywordC-13 natural abundance C-3-C-4 vegetation change carbon sequestration energy crop mean residence time soil organic matter
Subject AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS Subject ExtendedAgronomy ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS KeywordORGANIC-MATTER ; MICROBIAL BIOMASS ; BIOENERGY CROPS ; X GIGANTEUS ; LAND-USE ; DYNAMICS ; FRACTIONATION ; MITIGATION ; TILLAGE ; CLIMATE
Indexed BySCI
Language英语
WOS IDWOS:000426504500003
PublisherWILEY
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43899
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Affiliation[Zang, Huadong; Kuzyakov, Yakov] Univ Gottingen, Dept Agr Soil Sci, Busgenweg 2, D-37077 Gottingen, Germany; [Blagodatskaya, Evgenia] Univ Gottingen, Dept Soil Sci & Temperate Ecosyst, Busgenweg 2, D-37077 Gottingen, Germany; [Blagodatskaya, Evgenia] Russian Acad Sci, Inst Physicochem & Biol Problems Soil Sci, Pushchino 142290, Russia
Recommended Citation
GB/T 7714
Zang, HD,Blagodatskaya, E,Wen, Y,et al. Carbon sequestration and turnover in soil under the energy crop Miscanthus: repeated C-13 natural abundance approach and literature synthesis[J]. GLOBAL CHANGE BIOLOGY BIOENERGY,2018,10(4):262-271.
APA Zang, HD,Blagodatskaya, E,Wen, Y,Xu, XL,Dyckmans, J,&Kuzyakov, Y.(2018).Carbon sequestration and turnover in soil under the energy crop Miscanthus: repeated C-13 natural abundance approach and literature synthesis.GLOBAL CHANGE BIOLOGY BIOENERGY,10(4),262-271.
MLA Zang, HD,et al."Carbon sequestration and turnover in soil under the energy crop Miscanthus: repeated C-13 natural abundance approach and literature synthesis".GLOBAL CHANGE BIOLOGY BIOENERGY 10.4(2018):262-271.
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