Evaluation of Soil Fertility in Red Soil Eroded Watershed Based on GIS and Geostatistics

Abstract:

The evaluation of soil fertility in Zhuxi watershed was studied based on the methods of Geostatistics and GIS. The results showed that the higher soil fertility area was distributed on farmland in the downstream, the lowest soil fertility area was distributed in the central part of the watershed where soil was eroded seriously. The overall of soil fertility was low, the percentage of area was less than 10% in grade 1 and grade 2 which fertility were better, the area of grade 4 taken more than 50%, the area of grade 5 which fertility was lowest still more than 20%. It was indicated that although soil erosion was controlled for years in this watershed, soil fertility was still poor, restoration was a long-term process. The evaluation of soil fertility based on Geostatistics and GIS, which demonstrated that the soil fertility rapidly and intuitive, and give practical application for the results of Geostatistics.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 2434-2439
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.2434
• Online since: October 2011
• Authors: Hai Bin Chen, Zhi Biao Chen, Kun Huang, Zhi Qiang Chen
• Keywords: Geostatistics, Small Watershed of Zhuxi, Soil Fertility, Spatial Variability

References

[1] J.M. Xu, G.L Zhang, Z.M Xie, et a1. Indices and Assessment of Soil Quality. Beijing: Science Publishers(2010).(in chinese)

[2] Q.G. Zhao. Mechanism, Temporal-Spatial Changes and Controlling Countermeasures of Soil Degradation in Hilly Red Soil Region of Southeastern China. Beijing: Science Publishers(2002), p.1, 41-45. (in chinese)

[3] L.X. Wang. Watershed Management. Beijing: Chinese Forestry Publishers(1999), pp.1-10. (in chinese)

[4] X.D. Guo, B.J. Fu, K.M. Ma, et a1. Chinese Journal of Applied Eco1ogy, Vol. 11(2000), pp.557-563. (in chinese)

[5] X.F. Cheng, X.S. Shi, D.S.Yu, et a1. Chinese Journal of Applied & Environmental Biology, Vol. 110(2004), pp.64-67. (in chinese)

[6] J.J. ZHANG, F.Z. LI, K.L. HU, et a1. Acta Ecologica Sinica, Vol. 29(2009), pp.3163-3172. (in chinese)

[7] F.C. Liu, X.Z. Shi, D.S. Yu Dong, et a1. Geographical Research, Vol. 23(2004), pp.63-70. (in chinese)

[8] J.X. ZHU, H.W. XU, K. WANG, et a1. Soils, Vol. 40(2008), pp.960-965. (in chinese)

[9] Z.M. Wang, B. Zhang, K.S. Song, et a1. Pedosphere, Vol. 20(2010), pp.80-89.

[10] Z.B. Chen. Rehabilitation of Eroded Granite Mountainous Region and Its Eco-environmental Effects. Doctoral Dissertation of Fujian Normal University(2005). (in chinese)

[11] H. Yue, Z.B. Chen . Journal of Fujian Geography, Vol. 18(2003), pp.6-8. (in chinese)

[12] R.K. Lu. Soil Agricultural Chemical Analysis Method . Beijing: China Agricultural Science and Technology Publishers(1999). (in chinese)

[13] Z.Q. Wang. Geostatistics and its application in ecology. Beijing: Science Publishers(1999). (in chinese)

[14] R.D. Zhang. The theory of spatial variability and its application. Beijing: Science Publishers(2005), pp.4-7, 14-16. (in chinese)

[15] G.T. LIAO, T.X. LI, Y.D. WANG, et a1. Acta Ecologica Sinica, Vol. 27(2007), pp.1978-1986. (in chinese)

[16] C.Y. Huang. Soil Science. Beijing: China Agriculture Publishers(1999). (in chinese)