Soil Calcium Speciation at Different Geomorphological Positions in the Yaji Karst Experimental Site in Guilin, China

doi:10.5814/j.issn.1674-764x.2015.04.005

Abstract

Abstract: Limestone soil in karst areas is the product of weathering and carbonate rock dissolution in tropical and subtropical regions. Limestone soil in karst regions has a Ca-rich alkaline geochemical environment, but the characteristics of calcium speciation in limestone soil remain unclear. Here, to study changes in calcium speciation in soil across seasons in a karst area, different geomorphological positions and soil samples were collected from the Yaji karst experimental site. Using European Community Bureau of Reference (BCR) methods, we analyzed and discuss soil calcium speciation and seasonal migration characteristics. We found that total soil Ca content was 2.80–11.75 g kg-1, with an average of 5.25±0.68 g kg-1 (mean±SE). The order of content of each Ca speciation is extractable-Ca>reducible-Ca>residual-Ca>oxidizable-Ca. In addition to oxidizable-Ca, other Ca species had a positive correlation with total calcium. The calcium content and various forms of calcium content decreased gradually with changing season, but in addition to differences in residual calcium across seasons, total calcium and other forms of calcium across seasons were not different. Total calcium and different forms of calcium content were highest at sloped areas; slopes and other landforms were different but differences between plain, saddle and depression areas were not significant.

YANG Hui,LIANG Jianhong, CHEN Jiarui and CAO Jianhua. Soil Calcium Speciation at Different Geomorphological Positions in the Yaji Karst Experimental Site in Guilin, China[J]. Journal of Resources and Ecology, 2015, 6(4): 224-229.

References

Bao S D. 2008. Soil agricultural chemistry analysis. Beijing: China Agriculture Press. (in Chinese)
Cao J H, Pan G X, Yuan D X, et al. 2005a. Seasonal changes of dissolved organic carbon in soil: Its environmental implication in karst area. Ecology and Environment, 14(2):224-229. (in Chinese)
Cao J H, Yuan D X, Pan G X. 2003. Some soil features in karst ecosystem. Advance in Earth Sciences,18(1): 37-44. (in Chinese)
Cao J H, Yuan D X. 2005b. Karst ecological system constrained by geological conditions in Southwest of China. Beijing: Geological Publishing House. (in Chinese)
Chen G F, Jiang G H, Zhou W L, et al. 2013. Comparative analysis of surface runoff hydrologic dynamic characteristics in karst mountainous areas: Taking Yaji experimental station as study case. Journal of China Hydrology, 33(5):58-63. (in Chinese)
Chen T Q, Wei X H, Guan G C, et al. 2014. Impact of different land use types on soil calcium in Northern Guangdong. Tropical Geography, 34(3):337-343. (in Chinese)
Davidson C M, A L Duncan, D Littlejohn, et al. 1998. A critical evaluation of the three-stage BCR sequential extraction procedure to assess the potential mobility and toxicity of heavy metals in industrially-contaminated land. Analytica Chimica Acta, 363(1): 45-55.
Huang C Y. 2000. Soil science. Beijing: China Agriculture Press. (in Chinese)
Li T J. 1996. Soil environmental science. Beijing: Higher Education Press. (in Chinese)
Li X F. 2006. Speciation of calcium in soil and plants’ leaves in karst ecosystem and its ecological significance. Guilin: Guangxi Normal University. (in Chinese)
Lin H X, Zhang H L, Hou X Y. 1957. The chemical composition of certain oxylophytes, calciphytes and halophytes. Acta Pedologica Sinica, 5(3): 1-12. (in Chinese)
Muneer M, Oades J. 1989a. The role of Ca-organic interactions in soil aggregate stability. I. Laboratory studies with glucose 14C, CaCO3 and CaSO4?2H2O. Soil Research, 27(2): 389-399.
Muneer M, Oades J. 1989b. The role of Ca-organic interactions in soil aggregate stability. II. Field studies with 14C-labeled straw, CaCO3 and CaSO4?2H2O. Soil Research, 27(2): 401-409.
National Soil Survey Office. 1998. China soil. Beijing: China Agriculture Press. (in Chinese)
Pan G X, Teng Y Z, Tao Y X, et al. 2000. Effect of soil chemical field on the surface of karst in Guilin area. Soil, (4):173-177. (in Chinese)
Peele T C. 1936. The effect of calcium on the erodibility of soils. Soil Science Society of America Journal, 1: 47-58.
Peterson J B. 1948. Calcium linkage, a mechanism in soil granulation. Soil Science Society of America Journal, 12:29-34.
Qin S J, Liu J S, Wang G P, et al. 2007. Seasonal changes of soil phosphorus fractions under Calamagrostis angustifolia wetlands in Sanjiang Plain, China. Acta Ecologica Sinica, 27(9): 3844-3851. (in Chinese)
Rauret G, J Lopez-Sanchez, A Sahuquillo, et al. 1999. Improvement of the BCR three step sequential extraction procedure prior to the certification of new sediment and soil reference materials. Journal of Environmental Monitoring, 1(1): 57-61.
Shu X W, Du J J, Jia Z Y, et al. 2007. Progress in the application of slow/ controlled release fertilizers. Chinese Agricultural Science Bulletin, 23(12):234-238. (in Chinese)
Sulkowski M, AV Hirner. 2006. Element fractionation by sequential extraction in a soil with high carbonate content. Applied Geochemistry, 21(1): 16-28.
Teng Y Z. 1996. The relationship between karst soil environmental geo chemistry and karstification in moist subtropical area. Nanjing: Nanjing Agricultural University. (in Chinese)
Tessier A, P G Campbell, M Bisson. 1979. Sequential extraction procedure for the speciation of particulate trace metals. Analytical Chemistry, 51(7): 844-851.
Wang G Y, Li Y F, Shang Y, et al. 2011a. Ecological geochemistry of calcium in soil of Yanbian area, Jilin. Journal of Jilin University (Earth Science Edition), 41(1): 215-221. (in Chinese)
Wang S S, Liang D L, Wei W, et al. 2011b. Relationship between soil physic-chemical properties and selenium species based on path analysis. Acta Pedologica Sinica, 48(4): 823-830. (in Chinese)
Wu G, Li J Y, Zeng X D. 2002. Bio-availability of calcium in soil and the interaction with other elements. Soil and Environmental Sciences, 11(3): 319-322. (in Chinese)
Xie L P, Wang S J, Xiao D A. 2007. Ca covariant relation in plant-soil system in a small karst catchment. Earth and Environment, 35(1): 26-32. (in Chinese)
Yang J G, Wang B G, Tang J. 1995. Forest soil and its tree species in southern of Guangxi. Beijing: China Forestry Publishing House. (in Chinese)
Yuan K N. 1983. Soil chemistry of plant nutrient. Beijing: Science Press. (in Chinese)
Zhang D G, Zhu Y Q, Li T L, et al. 2011. Effects of long-term located fertilization on forms distribution of soil calcium in protected field. Journal of Soil and Water Conservation, 25(2): 198-202. (in Chinese)
Zhang H B, Luo Y M, Zhao Q G, et al. 2010. Hong Kong soil researches Ⅶ. Research on fractions of heavy metals and their potential environmental risks in soil based on BCR sequential extraction. Acta Pedologica Sinica, 47(5): 865-871. (in Chinese)
Zhang X Y, Yang Q, Sun Y, et al. 2013. The distribution of phosphorus forms and bioavailability in sediments from Huang Dong Hai continental shelf. Acta Ecologica Sinica, 33(11): 3509-3519. (in Chinese)
Zhou W, Lin B. 1996. Review in chemical behavior and bioavailability of calcium in soil. Soils and Fertilizers, (5): 20-23+45. (in Chinese)