[1]LAI Xuehui,LI Dan,YU Bofeng,et al.Effects of Soil Temperature and Water Content on Soil Respiration Rate During the Crop Growing Season in a Farm of Northern China[J].Research of Soil and Water Conservation,2016,23(01):117-122.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 01
Page number:
117-122
Column:
Public date:
2016-02-28
- Title:
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Effects of Soil Temperature and Water Content on Soil Respiration Rate During the Crop Growing Season in a Farm of Northern China
- Author(s):
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LAI Xuehui, LI Dan, YU Bofeng, ZHU Jiang, YAO Zhiyuan, ZHANG Shuting
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Department of Environment and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China
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- Keywords:
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soil respiration rate; soil temperature; Q10; soil water content
- CLC:
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S152
- DOI:
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- Abstract:
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Soil respiration rates of rice and maize fields during the growing season (from April to July) were measured by static alkali absorption method, and the effects of soil temperature and water content on soil respiration rates of a typical farm in Northern China were also examined. The results showed that the soil respiration rates of paddy field were higher than maize filed during the crop growing season, and soil respiration rates in 0—15 cm depth were significantly higher than that in 15—30 cm and 30—60 cm depths. Soil respiration rate decreased with the increase of soil depth. The maximum and minimum soil respiration rates of paddy field were 580.6 μg/(kg·h) and 160.4 μg/(kg·h), respectively, and the maximum and minimum values of maize field were 565.3 μg/(kg·h) and 137.5 μg/(kg·h), respectively. Soil respiration rates of rice and maize fields were found to be positively related to soil temperature (p<0.01). Soil temperature had been rising from April to June and the soil respiration rate also presented the same escalating trend; while soil temperature varied smoothly from late June to early July and the synchronous change trend between soil respiration and temperature was not obvious. Meanwhile, there was obvious correlation between soil respiration rate and water content in rice and maize fields (p<0.01), which indicated that soil water content can explain soil respiration rate change in rice and maize growing season.