Abstract
We examined the response of the temperature coefficient (Q 10 ) for soil respiration rate to changes in environmental temperature through a laboratory incubation experiment. Soil samples were collected from three climatic areas: arctic (Svalbard, Norway), temperate (Tsukuba, Japan) and tropical (Pasoh, Malaysia). The arctic and temperate soils were incubated at 8°C (control), 12°C (4°C warming) and 16°C (8°C warming) for 17 days. The tropical soil was incubated at 16°C (8°C cooling), 24°C (control) and 32°C (8°C warming). Before and after the incubation experiment, the temperature dependence of soil microbial respiration was measured using an open-airflow method with IRGA by changing the temperature in a water bath. The initial Q 10 before the incubation experiment was larger in the soils from higher latitudes: 3.4 in the arctic soil, 2.9 in the temperate soil, and 2.1 in the tropical soil. The response of the microbial respiration rate to change in temperature differed among the three soil types. The temperature dependence of respiration rate in the arctic soil did not change in response to warming by 4 and 8°C with a Q 10 of about 3. On the other hand, the Q 10 in the temperate soil decreased with increasing incubation temperature: from 2.8 in soils incubated at 8°C to 2.5 at 12°C and 2.0 at 16°C. In the tropical soil, the Q 10 was not changed even by the 8°C warming with a value of 2.1, whereas the Q 10 was increased from 2.1 to 2.7 by the 8°C cooling. These results suggest that the response of microbial respiration to climatic warming may differ between soils from different latitudes.
| Original language | English |
|---|---|
| Pages (from-to) | 205-210 |
| Number of pages | 6 |
| Journal | Applied Soil Ecology |
| Volume | 22 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Jan 1 2003 |
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All Science Journal Classification (ASJC) codes
- Ecology
- Agricultural and Biological Sciences (miscellaneous)
- Soil Science
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Effect of warming on the temperature dependence of soil respiration rate in arctic, temperate and tropical soils. / Bekku, Yukiko Sakata; Nakatsubo, Takayuki; Kume, Atsushi; Adachi, Minako; Koizumi, Hiroshi.
In: Applied Soil Ecology, Vol. 22, No. 3, 01.01.2003, p. 205-210.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effect of warming on the temperature dependence of soil respiration rate in arctic, temperate and tropical soils
AU - Bekku, Yukiko Sakata
AU - Nakatsubo, Takayuki
AU - Kume, Atsushi
AU - Adachi, Minako
AU - Koizumi, Hiroshi
PY - 2003/1/1
Y1 - 2003/1/1
N2 - We examined the response of the temperature coefficient (Q 10 ) for soil respiration rate to changes in environmental temperature through a laboratory incubation experiment. Soil samples were collected from three climatic areas: arctic (Svalbard, Norway), temperate (Tsukuba, Japan) and tropical (Pasoh, Malaysia). The arctic and temperate soils were incubated at 8°C (control), 12°C (4°C warming) and 16°C (8°C warming) for 17 days. The tropical soil was incubated at 16°C (8°C cooling), 24°C (control) and 32°C (8°C warming). Before and after the incubation experiment, the temperature dependence of soil microbial respiration was measured using an open-airflow method with IRGA by changing the temperature in a water bath. The initial Q 10 before the incubation experiment was larger in the soils from higher latitudes: 3.4 in the arctic soil, 2.9 in the temperate soil, and 2.1 in the tropical soil. The response of the microbial respiration rate to change in temperature differed among the three soil types. The temperature dependence of respiration rate in the arctic soil did not change in response to warming by 4 and 8°C with a Q 10 of about 3. On the other hand, the Q 10 in the temperate soil decreased with increasing incubation temperature: from 2.8 in soils incubated at 8°C to 2.5 at 12°C and 2.0 at 16°C. In the tropical soil, the Q 10 was not changed even by the 8°C warming with a value of 2.1, whereas the Q 10 was increased from 2.1 to 2.7 by the 8°C cooling. These results suggest that the response of microbial respiration to climatic warming may differ between soils from different latitudes.
AB - We examined the response of the temperature coefficient (Q 10 ) for soil respiration rate to changes in environmental temperature through a laboratory incubation experiment. Soil samples were collected from three climatic areas: arctic (Svalbard, Norway), temperate (Tsukuba, Japan) and tropical (Pasoh, Malaysia). The arctic and temperate soils were incubated at 8°C (control), 12°C (4°C warming) and 16°C (8°C warming) for 17 days. The tropical soil was incubated at 16°C (8°C cooling), 24°C (control) and 32°C (8°C warming). Before and after the incubation experiment, the temperature dependence of soil microbial respiration was measured using an open-airflow method with IRGA by changing the temperature in a water bath. The initial Q 10 before the incubation experiment was larger in the soils from higher latitudes: 3.4 in the arctic soil, 2.9 in the temperate soil, and 2.1 in the tropical soil. The response of the microbial respiration rate to change in temperature differed among the three soil types. The temperature dependence of respiration rate in the arctic soil did not change in response to warming by 4 and 8°C with a Q 10 of about 3. On the other hand, the Q 10 in the temperate soil decreased with increasing incubation temperature: from 2.8 in soils incubated at 8°C to 2.5 at 12°C and 2.0 at 16°C. In the tropical soil, the Q 10 was not changed even by the 8°C warming with a value of 2.1, whereas the Q 10 was increased from 2.1 to 2.7 by the 8°C cooling. These results suggest that the response of microbial respiration to climatic warming may differ between soils from different latitudes.
UR - http://www.scopus.com/inward/record.url?scp=0037370819&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037370819&partnerID=8YFLogxK
U2 - 10.1016/S0929-1393(02)00158-0
DO - 10.1016/S0929-1393(02)00158-0
M3 - Article
AN - SCOPUS:0037370819
VL - 22
SP - 205
EP - 210
JO - Applied Soil Ecology
JF - Applied Soil Ecology
SN - 0929-1393
IS - 3
ER -