Soil Carbon Dynamics in a Subtropical Mountainous Region, South China: Results Based on Carbon Isotopic Tracing

Chen, Qingqiang; Shen, Chengde; Sun, Yifei; Peng, Shaolin; Yi, Weixi; Li, Zhian; Jiang, Mantao

doi:10.1007/978-3-540-77686-4_9

Cited by 2 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It also increased from litter to topsoil (A-horizon) except in the 3-years plot. The causes for an increase with depth of δ 13 C values that have not undergone a C3-C4 change have been discussed in detail by other authors (Nadelhoffer & Fry 1988;Martin, Mariotti, Balesdent, Lavelle & Vuattoux, 1990;Ehleringer, Buchmann & Flanagan, 2000;Balesdent, Girardin & Mariotti, 1993;Balesdent & Mariotti, 1996;Roscoe et al, 2000;Garten, Hanson, Todd, Lu & Brice, 2007;Chen et al, 2008). As selective decay, which has been suggested as a cause, would result in relative accumulation of 13C-depleted compounds such as aromatic and aliphatic (Boutton, 1996), this cannot be an explanation.…”

Section: Signaturementioning

confidence: 99%

Soil Organic Matter Dynamics Upon Secondary Succession in Imperata Grassland, East Kalimantan, Indonesia

Yassir

Buurman

2015

Ina.J.For.Res

View full text Add to dashboard Cite

SOIL ORGANIC MATTER DYNAMICS UPON SECONDARY SUCCESSION IN IMPERATAGRASSLAND, EAST KALIMANTAN, INDONESIA. Soil organic matter (SOM) dynamics upon secondary succession in Imperata grassland was studied by stable carbon isotope analysis. The data of litter and soil samples of twenty plots in four different stages of successions were compared. These different stages were represented by plots that were; (1) burnt 3 years before sampling/observation (Imperata grassland), (2) burnt 9 years before sampling /observation, (3) secondary forest (≥15 years) and (4) primary forest. The results showed that isotopic signatures of all soil horizons of the regeneration stages were statistically different from those of the primary forest. The A-horizon under the 3-years Imperata plot still contained 23% forest (C3) carbon, and this fraction increased to 51% in the-B-horizon. In the 9-years plot and in the secondary forest, the C3 carbon in the A-horizon increased to 51% and 96%, respectively. In the topsoil, the loss of C4-C between the 3-years and the 9-years plot was significant, while it appeared negligible in the AB-horizon. The strong decay in the topsoil under Imperata grassland may be due to the rather high carbohydrate content of the SOM, which is considered easily decomposable. Further research is needed especially to explore the relation between carbon stocks and chemical composition of SOM. Such insight may help to better understand and predict soil carbon changes in relation to climate and vegetation change.Keywords: Carbon isotopes, Imperata grasslands, succession, soil organic matter (kondisi alang-alang), (2) PERUBAHAN BAHAN ORGANIK TANAH PADA PROSES SUKSESI SEKUNDER PADA LAHAN ALANG-ALANG DI KALIMANTAN TIMUR, INDONESIA. Perubahan bahan organik tanah pada proses suksesi di lahan alang-alang telah dipelajari dengan analisis isotop karbon. Data sampel tanah dan serasah dari dua puluh petak contoh dari empat tahapan proses suksesi yang berbeda dibandingkan. Tahapan dari proses suksesi tersebut diwakili oleh petak contoh yang terdiri dari: (1) 3 tahun setelah terbakar

show abstract

Section: Signaturementioning

confidence: 99%

Soil Organic Matter Dynamics Upon Secondary Succession in Imperata Grassland, East Kalimantan, Indonesia

Yassir

Buurman

2015

Ina.J.For.Res

View full text Add to dashboard Cite

show abstract

Contrasting Fates of Petrogenic and Biospheric Carbon in the South China Sea

Blattmann

Zhang

Zhao

et al. 2018

Geophysical Research Letters

View full text Add to dashboard Cite

A synthesis of published and newly acquired stable and radiocarbon isotope data from soil, river, and marine particulate organic carbon (OC) from the South China Sea drainage and sedimentary basin reveals that OC derived from bedrock‐erosion (petrogenic OC) and marine productivity comprises the major contributors to bulk OC in particulate matter reaching abyssal depths, while soil‐derived OC appears negligible. Aluminum‐radiocarbon relationships of sediments suggest that soil OC initially associated with detrital terrestrial minerals is lost and replaced by marine OC during transport beyond the continental shelf. We estimate that petrogenic OC sinking to a ~30,000 km2 region of the deep northeastern South China Sea accounts for 0.6% of global petrogenic OC burial. The basin‐wide OC isotope patterns coupled with sediment trap observations highlight both the spatial variabilities of OC components as they propagate from source to sedimentary sink and the significance of petrogenic OC to deep ocean sediments.

show abstract

Soil Carbon Dynamics in a Subtropical Mountainous Region, South China: Results Based on Carbon Isotopic Tracing

Cited by 2 publications

References 44 publications

Soil Organic Matter Dynamics Upon Secondary Succession in Imperata Grassland, East Kalimantan, Indonesia

Soil Organic Matter Dynamics Upon Secondary Succession in Imperata Grassland, East Kalimantan, Indonesia

Contrasting Fates of Petrogenic and Biospheric Carbon in the South China Sea

Contact Info

Product

Resources

About