Pei, T., Qin, C. Z., Zhu, A. X., Yang, L., Luo, M., Li, B. and Zhou, C. (2010). “Mapping
soil organic matter using the topographic wetness index: A comparative study based
on different flow- direction algorithms and kriging methods.” Ecological Indicators,
Vol. 10, No. 3, pp. 610-619, DOI:http://dx.doi.org/10.1016/j. ecolind.2009.10.005.Pei,
T., Qin, C. Z., Zhu, A. X., Yang, L., Luo, M., Li, B. and Zhou, C. (2010). “Mapping
soil organic matter using the topographic wetness index: A comparative study based
on different flow- direction algorithms and kriging methods.” Ecological Indicators,
Vol. 10, No. 3, pp. 610-619, DOI:http://dx.doi.org/10.1016/j. ecolind.2009.10.005.