Comparison of CO2 effluxes and their driving factors between two temperate steppes in Inner Mongolia, China

Advances in Atmospheric Sciences - Tập 23 - Trang 726-736 - 2006
Yuchun Qi1, Yunshe Dong1,2, Manfred Domroes2, Yuanbo Geng1, Lixin Liu1,3, Xingren Liu1,3
1Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing, China
2Department of Geography, Mainz University, Mainz, Germany
3Graduate University of the Chinese Academy of Sciences, Beijing, China

Tóm tắt

Soil respiration is a key component of the global terrestrial ecosystem carbon cycle. The static opaque chamber method was used to measure the CO2 effluxes from soil of a semiarid Aneurolepidium chinense steppe and a Stipa krylovii steppe in the Xilin River Basin of Inner Mongolia, China from March 2002 to December 2004. The results indicated that the soil respiration rates of the semiarid Aneurolepidium chinense steppe and the Stipa krylovii steppe were both relatively high from mid-May to mid-September of each year and remained low during the rest of the year. The minimum value of soil respiration occurred in December or January and negative effluxes of CO2 appeared for several days during the non-growing season of individual years at the two sampling sites. A high annual variation was found in the two steppes with the coefficients of variance (CV) being over 94%, even high to 131%. The annual sums of soil CO2 efflux of the Aneurolepidium chinense steppe varied between 356.4 gC m−2 yr−1 and 408.8 gC m−2 yr−1, while those of the Stipa krylovii steppe in the three years were in the range of 110.6 gC m−2 yr−1 to 148.6 gC m−2 yr−1. The mean respiration rates of the Aneurolepidium chinense steppe were significantly higher than those of the Stipa krylovii steppe in different statistical periods with the exception of the non-growing season. About 59.9% and 80.6% of the soil respiration variations in both steppes for the whole sampling period were caused by the changes of temperature and soil water content. In the Aneurolepidium chinense steppe, the soil respiration rate has significant or extremely significant positive correlation (r = 0.58–0.85, p < 0.05 or p < 0.01) with air temperature and ground temperature of the topsoil except in 2002; the unique contributions of temperature change to the soil respiration variation of the three years were 53.3%, 81.0% and 58.6%, respectively. But, for the Stipa krylovii steppe in the same time interval, the soil water content (especially that of the 10–20 cm layer) has a greater effect on the change of soil respiration, and the unique contributions of the change of the 10–20 cm soil water content to the variations of soil respiration in 2002 and 2003 were 60.0% and 54.3%, respectively. In 2004, in spite of the higher contribution of temperature than soil water content, the contribution of ground temperature at a depth of 10 cm was only 46.2%, much weaker than that of any single year in the Aneurolepidium chinense steppe.

Tài liệu tham khảo

Bruce, J. P., M. Frome, E. Haites, H. Janzen, R. Lal, and K. Paustian, 1999: Carbon sequestration in soils. Journal of Soil and Water Conservation, 54, 382–389.

Cao Guangmin, Li Yingnian, Zhang Jinxia, and Zhao Xinquan, 2001: Values of carbon dioxide emission from different land use patterns of Alpine meadow. Chinese Journal of Environmental Science, 22(6), 14–19. (in Chinese)

Chen Quansheng, Li Linghao, Han Xingguo, and Yan Zhidan, 2003: Effects of water content on soil respiration and mechanisms. Acta Ecologica Sinica, 23(5), 972–978. (in Chinese)

Chen Quansheng, and Coauthors, 2004: Temperature sensitivity of soil respiration in relation to soil moisture in 11 communities of typical temperate steppe in Inner Mongolia. Acta Ecologica Sinica, 24(4), 831–836. (in Chinese)

Chen Zuozhong, and Wang Shiping, 2000: Typical grassland ecosystem in China. Science Press, Beijing, 412pp. (in Chinese)

Craine, J. M., D. A. Wedin, and F. S. Chapin, 1999: Predominance of ecophysiological controls on soil CO2 flux in a Minnesota grassland. Plant and Soil, 207, 77–86.

Curiel Yuste, J., I. A. Janssens, A. Carrara, L. Meiresonne, and R. Ceulemans, 2003: Interactive effects of temperature and precipitation on soil respiration in a temperate maritime pine forest. Tree Physiology, 23, 1263–1270.

Davidson, E. A., E. Belk, and R. D. Boone, 1998: Soil water content and temperature as independent or confounded factors controlling soil respiration in a temperate mixed hardwood forest. Global Change Biology, 4, 217–227.

Davidson, E. A., L. V. Verchot, J. H. Cattânio, I. L. Ackerman, and J. E. M. Carvalho, 2000: Effect of soil water content on soil respiration in forests and cattle pastures of eastern Amazonia. Biogeochemistry, 48, 53–69.

Dong Yunshe, Zhang Shen, Qi Yuchun, Chen Zuozong, and Geng Yuanbo, 2000: Fluxes of CO2, N2O and CH4 from a typical temperate grassland in Inner Mongolia and its daily variation. Chinese Science Bulletin, 45(17), 1590–1594.

Du Rui, and Coauthors, 2001: A study of chamber method for in-site measurements of greenhouse gases emissions from grassland. Chinese Journal of Atmospheric Sciences, 25(1), 61–70. (in Chinese)

Flanagan, L. B., and B. G. Johnson, 2005: Interacting effects of temperature, soil moisture and plant biomass production on ecosystem respiration in a northern temperate grassland. Agricultural and Forest Meteorology, 130, 237–253.

Franzluebbers, K., A. J. Franzluebbers, and M. D. Jawson, 2002: Environmental controls on soil and whole-ecosystem respiration from a tallgrass prairie. Soil Science Society of America Journal, 66, 254–262.

Jensen, L. S., D. J. McQueen, and T. G. Shepherd, 1996: Effects of soil compaction on N mineralization and microbial C and N, Part I: Field measurements. Soil & Tillage Research, 38, 175–188.

Jia Youling, 1995: Natural Resources Series of China: Grasslands. China Environmental Science Press, Beijing, 452pp. (in Chinese)

Keith, H., K. L. Jacobsen, and R. J. Raison, 1997: Effects of soil phosphorus availability, temperature and moisture on soil respiration in Eucalyptus pauciflora forest. Plant and Soil, 190, 127–141.

Kessavalou, A., A. R. Mosier, J. W. Doran, R. A. Drijber, D. J. Lyon, and O. Heinemeyer, 1998: Fluxes of CO2, N2O and CH4 in grass sod and winter wheat-fallow tillage management. Journal of Environmental Quality, 27, 1094–1104.

Kirschbaum, M. U. F., 1995: The temperature dependence of soil organic matter decomposition, and the effect of global warming on soil organic C storage. Soil Biology and Biochemistry, 27, 753–760.

Kucera, C. L., and D. R. Kirkham, 1971: Soil respiration studies in tall grass prairie in Missouri. Ecology, 52, 912–915.

Lavigne, M. B., R. J. Foster, and G. Goodine, 2004: Seasonal and annual changes in soil respiration in relation to soil temperature, water potential and trenching. Tree Physiology, 24, 415–424.

Li Bo, Yong Shipeng, and Li Zhonghou, 1988: The vegetation of the Xilin River basin and its utilization. Research on Grassland Ecosystem No.3, edited by Inner Mongolia Grassland Ecosystem Research Station, CAS, Science Press, Beijing, 84–183. (in Chinese)

Li Linghao, and Coauthors, 2002: Correlations between plant biomass and soil respiration in Leymus chinensis community in the Xilin River Basin of Inner Mongolia. Acta Botanica Sinica, 44(5), 593–597.

Li Yinpeng, and Ji Jinjun, 2001: Model estimates of global carbon flux between vegetation and the atmosphere. Adv. Atmos. Sci., 18(5), 808–818.

Li Yutang, 2001: The exploitation of grassland resources and strategies for China sustainable development in the future. Grassland of China, 23(3), 64–66.

Linn, D. M., and J. W. Doran, 1984: Effect of water-filled pore space on carbon dioxide and nitrous oxide production in tilled and nontilled soils. Soil Science Society of America Journal, 48, 1267–1272.

Liu Shurun, and Liu Zhongling, 1988: Outline of flora of the Xilin River basin, Inner Mongolia. Research on Grassland Ecosystem No.3., edited by Inner Mongolia Grassland Ecosystem Research Station, CAS, Science Press, Beijing, 227–268. (in Chinese)

Lohila, A., M. Aurela, K. Regina, and T. Laurila, 2003: Soil and total ecosystem respiration in agricultural fields: Effect of soil and crop type. Plant and Soil, 251, 303–317.

Mielnick, P. C., and W. A. Dugas, 2000: Soil CO2 flux in a tallgrass prairie. Soil Biology and Biochemistry, 32, 221–228.

Mosier, A. R., and J. A. Delgado, 1997: Methane and nitrous oxide fluxes in grasslands in western Puerto Rico. Chemosphere, 35, 2050–2082.

Prentice, I. C., and Coauthors, 2001: The carbon cycle and atmospheric carbon dioxide. Climate Change 2001: The Scientific Basis, J. T. Houghton, et al., Eds., Cambridge University Press, Cambridge, 183–237.

Raich, J. W., and C. S. Potter, 1995: Global patterns of carbon dioxide emissions from soils. Global Biogeochemical Cycles, 9, 23–26.

Raich, J. W., and W. H. Schlesinger, 1992: The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate. Tellus, 44B, 81–99.

Raich, J. W., and A. Tufekcioglu, 2000: Vegetation and soil respiration: Correlations and controls. Biogeochemistry, 48, 71–90.

Schlesinger, W. H., and J. A. Andrews, 2000: Soil respiration and the global carbon cycle. Biogeochemistry, 48, 7–20.

Singh, J. S., and S. R. Gupta. 1977: Plant decomposition and soil respiration in terrestrial ecosystem. Botanical Review, 43, 449–528.

Sun Xiangyang, Qiao Jie, and Tan Xiao, 2001: Flux of carbon dioxide (CO2) in temperate forest soils. Journal of Northeast Forestry University, 29(1), 34–39. (in Chinese)

Wang Yuesi, Hu Yuqiong, Ji Baoming, Liu Guangren, and Xue Min, 2003: An investigation on the relationship between emission/uptake of greenhouse gases and environmental factors in semiarid grassland. Adv. Atmos. Sci., 20(1), 119–127.

Xu, L., D. D. Baldocchi, and J. Tang, 2004: How soil moisture, rain pulses, and growth alter the response of ecosystem respiration to temperature. Global Biogeochemical Cycles, 18, GB4002, doi:10.1029/2004GB002281.

Xu Zhongqi, Li Wenhua, Min Qingwen, and Xu Qing, 2005: Research on changes in value of ecosystem services in Xilin River Basin. Journal of Natural Resources, 20(1), 99–104. (in Chinese)

Zhang Xinshi, Zhou Guansheng, Gao Qiong, Yang Dian’an, Wang Quan, and Tang Haiping, 1997: Northeast China Transect (NECT) for global change studies. Earth Science Frontiers, 4, 145–151. (in Chinese)

Zheng Xunhua, Xu Zhongjun, Wang Yuesi, Han Shenghui, Huang Yao, Cai Zucong, and Zhu Jianguo, 2002: Determination of net exchange of CO2 between paddy fields and atmosphere with static opaque-chamber-based measurements. Chinese Journal of Applied Ecology, 13, 1240–1244. (in Chinese)

Zou Jianwen, Huang Yao, Zheng Xunhua, Wang Yuesi, and Chen Yuquan, 2004a: Static opaque chamber-based technique for determination of net exchange of CO2 between terrestrial ecosystem and atmosphere. Chinese Science Bulletin, 49, 381–388.

Zou Jianwen, Huang Yao, Zong Lianggang, Zheng Xunhua, and Wang Yuesi, 2004b: Carbon dioxide, methane, and nitrous oxide emissions from a rice-wheat rotation as affected by crop residue incorporation and temperature. Adv. Atmos. Sci., 21(5), 691–698.

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Advances in Atmospheric Sciences

Tập 23

726-736

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