Soil Infiltration Study for Different Forest Types in Typical Small Watershed of Moufengshan Area

Abstract:

The hydraulic conductivity and correlated factors of undisturbed soil profile (0-20cm、20-40cm、40-60cm) are researched, by taking different forest types (cyclobalanopsis chungii, phyllostachys pubescens, bambusa multiplex var.nana, eucalyptus forests) in typical small watershed of Moufengshan area in Guangzhou of China as study objects. In conclusion, generally, the hydraulic conductivity is decreasing with an increase in profile depth. The variation ranges of hydraulic conductivity are 13.64-4.91, 8.16-2.96, 7.92-3.71, and 10.4-3.63m/d for phyllostachys pubescens, cyclobalanopsis chungii, bambusa multiplex var.nana, and eucalyptus forests respectively. In general, coefficients of permeability are found to be positively related to porosity and root density, and negatively related to dry density, whilst the correlation with root diameter remains uncertain. However, the degrees of correlation with dry density, root density, and root diameter vary substantially for different types of forest land, whereas an overall well correlation with porosity is presented.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 3620-3624
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.3620
• Online since: June 2014
• Authors: Ding Gui Luo*, Xue Xia Huang, Qing Guo, Qian Hong Liu, Mao Li
• Keywords: Forest Soil, Hydraulic Conductivity, Moufengshan Area

References

[1] Weiwei Ma, Hui Wang, Liping Zhang．Study on Soil Permeability of Platycladus Orientalis Plantation in Northern Mountains of Lanzhou City[J]. Journal of Arid Land Resources and Environment，2009，23(2): 186-190(in Chinese).

[2] Yangyi Zhao, Yujie Wang, Yunqi Wang, et al．Effects of structures of plantation forests on soil infiltration characteristics in source water protect areas in northern Chongqing City[J]．Acta Ecologica Sinica, ，2010，30(15): 4162－4172(in Chinese).

[3] Qiang Wei, Lei Ling, Guangzhong Zhang, et al． Soil Infiltration Characteristics of Main Forest Types in Xinglong Mountain of Gansu [J]. Journal of Northeast Forestry University, 2013, 41(3): 57-62(in Chinese).

[4] Junbiao Huang. Distribution and Absorption of Polycyclic Aromatic Hydrocarbons in Typical Forest Soil of Guangzhou[D]. Chinese Academy of Forestry，2013，master thesis(in Chinese).

[5] Jianxin Zhang, Dawei Zheng. Rain water harvesting approaches and their effects on increasing soil water content and crop yield in north China[J]. Transactions of the CSAE, 2006, 22(7): 65-69.

[6] Jianxing Li, Binghui He, Xuemei Mei, et al．Effects of different planting modes on the soil permeability of sloping farmlands in purple soil area[J]. Chinese Journal of Applied Ecology，2013，24(3): 725-731(in Chinese).