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Effect of marsh reclamation on heterotrophic soil respiration in Sanjiang Plain, Northeast China.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Qing-Ju, Hao Changsheng, Jiang Jun-Ke, Zhang Gilkes, Robert J. Prakongkep, Nattaporn |
| Copyright Year | 2010 |
| Abstract | The Sanjiang Plain is the largest low-altitudinal swampy plain in China where has been strongly affected by human activities particularly the conversion of marsh to cropland. Four plots of Carex lasiocarpa marsh, Deyeuxia angustifolia marsh, rice field and dryland were selected in this study to evaluate the effect of marsh reclamation on heterotrophic soil respiration. Results showed that the seasonal changes of heterotrophic soil respiration from C. lasiocarpa marsh and D. angustifolia marsh were identical with a single-peak. The largest values appeared in summer and the lowest ones appeared in winter. The seasonal variation of heterotrophic soil respiration from dryland was the same as the marshlands, but the seasonal course of heterotrophic soil respiration from rice field changed and the peak values were postponed in autumn. The carbon effluxes by heterotrophic soil respiration from C. lasiocarpa marsh, D. angustifolia marsh, dryland and rice field were 3.14±0.45, 4.81±0.68, 2.85±0.38 and 2.18±0.31 t C/ha/a, respectively. Significant relationships were found between temperature and heterotrophic soil respiration from C. lasiocarpa marsh, D. angustifolia marsh and dryland, and Q10 values were 2.1, 2.5 and 1.8, respectively. The relationships between heterotrophic soil respiration and soil moisture/water table were best described by quadratic equations. |
| Starting Page | 48 |
| Ending Page | 51 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.iuss.org/19th%20WCSS/Symposium/pdf/1418.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
