| 2010年烟台沙漠学术研讨会论文选 |
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| Soil Carbon Sequestration in Sand-fixation Plantation of Pinus sylvestris var. Mongolica and Response of Soil Respiration to Drought and Wet Conditions |
| LI Yu-qiang, ZHAO Xue-yong, LIU Xin-ping, SHANG Wen, FENG Jing, SU Na |
| Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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Abstract Soil carbon sequestration of sand-fixation plantation and the response of soil respiration to different water condition in Pinus sylvestris var. Mongolica woodland and mobile sand dune were investigated in Horqin Sandy Land. Results show that (1) after 23 years since Pinus sylvestris var. Mongolica was planted in mobile sand dune, the content of very fine sand and silt+clay increased significantly in soil, whereas soil bulk density decreased; (2) the soil organic carbon sequestration in woodland was 221.8 g·m-2and 113.9 g·m-2 at the depth of 0~5 cm and 5~15 cm, respectively, and the sequestration rate was 9.64 g·m-2 and 4.95 g·m-2·a-1, respectively; the CaCO3-C sequestration was 4.0 g·m-2 and 2.5 g·m-2 and the rate was 0.17 g·m-2 and 0.11 g·m-2·a-1, respectively; (3) during drought period, soil respiration showed a strong negative exponential relationship with air temperature; soil respiration in woodland was higher than that in mobile sand dune whether the condition is drought or not; and (4) soil respiration increased after rain process, but the increment was higher in woodland; the removal of surface litter resulted in decrease of soil respiration and rain exacerbated the difference.
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Received: 30 August 2010
Published: 20 March 2011
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Cite this article:
LI Yu-qiang;ZHAO Xue-yong;LIU Xin-ping;SHANG Wen;FENG Jing;SU Na. Soil Carbon Sequestration in Sand-fixation Plantation of Pinus sylvestris var. Mongolica and Response of Soil Respiration to Drought and Wet Conditions. JOURNAL OF DESERT RESEARCH, 2011, 31(2): 282-287.
URL:
http://www.desert.ac.cn/EN/ OR http://www.desert.ac.cn/EN/Y2011/V31/I2/282
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2011, Vol. 31 
