Abstract
The effects of warming (+3 °C) and drought (–30% precipitation) on the fine root decomposition of Pinus koraiensis seedlings were examined using a litter bag method. The study site included a full factorial design with two temperature and two precipitation levels, with three replicates. Litter bags containing fine root litter of 2-year-old P. koraiensis seedlings were retrieved after 3, 6, and 12 months of decomposition. After 12 months, the mass loss of fine roots was significantly increased in response to warming (control = 31.1%, warming = 35.9%, drought = 29.2%, and warming plus drought = 35.5%); no change was observed until 6 months. Mass loss was not influenced by drought or by the interaction between warming and drought. Warming increased the nitrogen concentration of fine root litter but decreased the carbon concentration and carbon/nitrogen ratio after 6 and 12 months. This may be because warming stimulated nitrogen immobilization, which reduced the carbon/nitrogen ratio. Therefore, the carbon/nitrogen ratio may be affected by warming prior to changes in the mass loss of fine roots because roots with a low carbon/nitrogen ratio are generally characterized by high available nitrogen for decomposers. These results suggest that climate change (especially warming) may cause rapid decomposition of organic matter.
| Original language | English |
|---|---|
| Pages (from-to) | 80-87 |
| Number of pages | 8 |
| Journal | Turkish Journal of Agriculture and Forestry |
| Volume | 43 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
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Keywords
- Carbon/nitrogen ratio
- Climate change
- Drought
- Fine root decomposition
- Soil temperature
- Warming
ASJC Scopus subject areas
- Forestry
- Food Science
- Ecology
Cite this
Increased soil temperature stimulates changes in carbon, nitrogen, and mass loss in the fine roots of pinus koraiensis under experimental warming and drought. / Han, Seung Hyun; Kim, Seongjun; Chang, Hanna; Li, Guanlin; Son, Yo Whan.
In: Turkish Journal of Agriculture and Forestry, Vol. 43, No. 1, 01.01.2019, p. 80-87.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Increased soil temperature stimulates changes in carbon, nitrogen, and mass loss in the fine roots of pinus koraiensis under experimental warming and drought
AU - Han, Seung Hyun
AU - Kim, Seongjun
AU - Chang, Hanna
AU - Li, Guanlin
AU - Son, Yo Whan
PY - 2019/1/1
Y1 - 2019/1/1
N2 - The effects of warming (+3 °C) and drought (–30% precipitation) on the fine root decomposition of Pinus koraiensis seedlings were examined using a litter bag method. The study site included a full factorial design with two temperature and two precipitation levels, with three replicates. Litter bags containing fine root litter of 2-year-old P. koraiensis seedlings were retrieved after 3, 6, and 12 months of decomposition. After 12 months, the mass loss of fine roots was significantly increased in response to warming (control = 31.1%, warming = 35.9%, drought = 29.2%, and warming plus drought = 35.5%); no change was observed until 6 months. Mass loss was not influenced by drought or by the interaction between warming and drought. Warming increased the nitrogen concentration of fine root litter but decreased the carbon concentration and carbon/nitrogen ratio after 6 and 12 months. This may be because warming stimulated nitrogen immobilization, which reduced the carbon/nitrogen ratio. Therefore, the carbon/nitrogen ratio may be affected by warming prior to changes in the mass loss of fine roots because roots with a low carbon/nitrogen ratio are generally characterized by high available nitrogen for decomposers. These results suggest that climate change (especially warming) may cause rapid decomposition of organic matter.
AB - The effects of warming (+3 °C) and drought (–30% precipitation) on the fine root decomposition of Pinus koraiensis seedlings were examined using a litter bag method. The study site included a full factorial design with two temperature and two precipitation levels, with three replicates. Litter bags containing fine root litter of 2-year-old P. koraiensis seedlings were retrieved after 3, 6, and 12 months of decomposition. After 12 months, the mass loss of fine roots was significantly increased in response to warming (control = 31.1%, warming = 35.9%, drought = 29.2%, and warming plus drought = 35.5%); no change was observed until 6 months. Mass loss was not influenced by drought or by the interaction between warming and drought. Warming increased the nitrogen concentration of fine root litter but decreased the carbon concentration and carbon/nitrogen ratio after 6 and 12 months. This may be because warming stimulated nitrogen immobilization, which reduced the carbon/nitrogen ratio. Therefore, the carbon/nitrogen ratio may be affected by warming prior to changes in the mass loss of fine roots because roots with a low carbon/nitrogen ratio are generally characterized by high available nitrogen for decomposers. These results suggest that climate change (especially warming) may cause rapid decomposition of organic matter.
KW - Carbon/nitrogen ratio
KW - Climate change
KW - Drought
KW - Fine root decomposition
KW - Soil temperature
KW - Warming
UR - http://www.scopus.com/inward/record.url?scp=85062077748&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062077748&partnerID=8YFLogxK
U2 - 10.3906/tar-1807-162
DO - 10.3906/tar-1807-162
M3 - Article
AN - SCOPUS:85062077748
VL - 43
SP - 80
EP - 87
JO - Turk Tarim ve Ormancilik Dergisi/Turkish Journal of Agriculture and Forestry
JF - Turk Tarim ve Ormancilik Dergisi/Turkish Journal of Agriculture and Forestry
SN - 1300-011X
IS - 1
ER -