Nature Environment and Pollution Technology

Open Access Open Access  Restricted Access Subscription Access

Soil Respiration and its Relationship to Environmental Factors in Three Land Uses on the Loess Tableland


Affiliations
1 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources/Northwest A&F University, Yangling, Shaanxi, 712100, China
2 École de technologie supérieure, Université du Québec, 1100, rue Notre-Dame Ouest, Montreal, QC., H3C 1K3, Canada
 

Investigating the contribution of different land use types to the carbon cycle of terrestrial ecosystems is of considerable importance in studying global climate change. The objective of this study is to determine the temporal variation of soil respiration rates in different land uses (maize, wheat stubble, and bare land) and their responses to environmental factors for the Loess Tableland, using an improved multi-channel automatic flux chamber system. Results showed that the soil respiration rate indicates a clear diurnal and seasonal variations. The mean soil carbon emission rates were 0.94, 1.94 and 2.38 gC·m-2·d-1 in bare land, wheat stubble field, and maize field, respectively. The determination coefficient of soil surface temperature on the diurnal soil respiration rate was more significant than that of deeper layers. The Q10 value was used to represent the temperature sensitivity of soil respiration in three different land uses, soil respiration in the maize field showed the largest temperature sensitivity. The soil respiration was found to increase exponentially with the increase in air temperature, whereas the relationship between soil respiration and soil moisture was quadratic. The trend of rainfall-affected soil respiration after the sudden rain and continuous light rain showed large differences, meanwhile, a clear difference in the sensitivity of soil respiration to rainfall exists for the different land uses.

Keywords

Environmental Factors, Loess Tableland, Soil Respiration, Soil Temperature, Soil Moisture, Climate Change.
User
Notifications
Font Size


  • Borken, W., Xu, Y., Davidson, E.A. and Beese, F. 2002. Site and temporal variation of soil respiration in European bech, Norway spruce and Scots pine forests. Global Change Biol., 8: 1205-1216.

  • Buchmann, N. 2000. Biotic and abiotic factors controlling soil respiration rates in Picea abies stands. Soil Biol. Biochem., 32: 1625-1635.

  • Cao, G., Tang, Y., Mo, W., Wang, Y., Li, Y. and Zhao, X. 2004. Grazing intensity alters soil respiration in an alpine meadow on the Tibetan plateau. Soil Biol. Biochem., 36: 237-243.

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

  • Gao, H., Guo, S. and Liu, W. 2011. Characteristics of soil respiration in fallow and its influencing factors at arid- highland of Loess plateau. Acta Ecologica Sinica, 31: 5217-5224. (In Chinese)

  • Gong, Z.T., Zhang, G.L. and Chen Z.C. (ed.) 2007. Pedogenesis and soil taxonomy. Beijing Sci. Press Publ. (In Chinese.).

  • Han, G., Zhu, B. and Jiang, C. 2006. Soil respiration and its controlling factors in rice fields in the hill region of the central sichuan basin. Journal of Plant Ecology, 30: 450-456. (In Chinese)

  • Han, G., Zhou, G., Xu, Z., Yang, Y., Liu, J. and Shi, K. 2007. Biotic and abiotic factors controlling the spatial and temporal variation of soil respiration in an agricultural ecosystem. Soil Biol. Biochem., 39: 418-425.

  • Han, X., Liu, W. and Lin, W. 2015. Spatiotemporal analysis of potential evapotranspiration in the Changwu tableland from 1957 to 2012. Meteorol. Appl., 22: 586-591.

  • Jia, B., Zhou, G., Wang, F. and Wang, Y. 2005. Soil respiration and its influencing factors at grazing and fenced typical Leymuschinensis steppe, Nei Monggol. Environmental Science, 26: 3-9. (In Chinese),

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

  • Lee, X., Wu, H., Sigler, J., Oishi, C. and Siccama, T. 2004. Rapid and transient response of soil respiration to rain. Global Change Biol., 10: 1017-1026.

  • Li, Z., Lu, X., Yang, Q. and Gao, J. 2003. Soil surface CO2 fluxes of Deyeuxia angustifolia wetland in Sanjiang Plain. Journal of Nanjing Forestry University, 27: 51-54. (In Chinese)

  • Liu, X., Wan, S., Su, B., Hui, D. and Luo, Y. 2002. Response of soil CO2 efflux to water manipulation in a tallgrass prairie ecosystem. Plant Soil, 240: 213-223.

  • Moncrieff, J.B. and Fang, C.M. 1999. A model for soil CO2 production and transport 2: application to a Florida Pinus elliotte plantation. Agr. Forest Meteorol., 95: 237-256.

  • Muhr, J., Goldberg, S.D., Borken, W. and Gebauer, G. 2008. Repeated drying-rewetting cycles and their effects on the emission of CO2, N2O, NO, and CH4 in a forest soil. J. Plant Nutr. Soil Sc., 171: 719-728.

  • Nakadai, T., Yokozawa, M., Ikeda, H. and Koizumi, H. 2002. Diurnal changes of carbon dioxide flux from bare soil in agricultural field in Japan. Appl. Soil Ecol., 19: 161-171.

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

  • Raich, J.W. and Tufekcioglu, A. 2000. Vegetation and soil respiration: correlations and controls. Biogeochemistry, 48: 71-90.

  • Schnurer, J., Clarholm, M., Bostrom, S. and Rosswall, T. 1986. Effects of moisture on soil microorganisms and nematodes: a field experiment. Microbial Ecol., 12: 217-230.

  • Xu, M. and Qi, Y. 2001. Soil-surface CO2 efflux and its spatial and temporal variations in a young ponderosa pine plantation in northern California. Global Change Biol., 7: 667-677.

  • Zhang, H., Wang, X., Feng, Z., Pang, J., Lu, F., Ouyang, Z., Zheng, H., Liu, W. and Hui, D. 2011. Soil temperature and moisture sensitivities of soil CO2 efflux before and after tillage in a wheat field of Loess plateau, China. J. Environ. Sci. China, 23: 79-86.


Abstract Views: 167

PDF Views: 0




  • Soil Respiration and its Relationship to Environmental Factors in Three Land Uses on the Loess Tableland

Abstract Views: 167  |  PDF Views: 0

Authors

Xiaoyang Han
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources/Northwest A&F University, Yangling, Shaanxi, 712100, China
Wenzhao Liu
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources/Northwest A&F University, Yangling, Shaanxi, 712100, China
Fengru Fang
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources/Northwest A&F University, Yangling, Shaanxi, 712100, China
Jie Chen
École de technologie supérieure, Université du Québec, 1100, rue Notre-Dame Ouest, Montreal, QC., H3C 1K3, Canada

Abstract


Investigating the contribution of different land use types to the carbon cycle of terrestrial ecosystems is of considerable importance in studying global climate change. The objective of this study is to determine the temporal variation of soil respiration rates in different land uses (maize, wheat stubble, and bare land) and their responses to environmental factors for the Loess Tableland, using an improved multi-channel automatic flux chamber system. Results showed that the soil respiration rate indicates a clear diurnal and seasonal variations. The mean soil carbon emission rates were 0.94, 1.94 and 2.38 gC·m-2·d-1 in bare land, wheat stubble field, and maize field, respectively. The determination coefficient of soil surface temperature on the diurnal soil respiration rate was more significant than that of deeper layers. The Q10 value was used to represent the temperature sensitivity of soil respiration in three different land uses, soil respiration in the maize field showed the largest temperature sensitivity. The soil respiration was found to increase exponentially with the increase in air temperature, whereas the relationship between soil respiration and soil moisture was quadratic. The trend of rainfall-affected soil respiration after the sudden rain and continuous light rain showed large differences, meanwhile, a clear difference in the sensitivity of soil respiration to rainfall exists for the different land uses.

Keywords


Environmental Factors, Loess Tableland, Soil Respiration, Soil Temperature, Soil Moisture, Climate Change.

References