Abstract:

The aim was to study the distributed characteristic system of Robinia pseudoacacia artificial forest root in the Loess Plateau well, and consummate the fine root growth model. The paper studied on the volatility of fine root growth using Fourier series fit method, and established a model with fluctuations by revising the vertical growth model of fine root. It verified that the growth model with fluctuations fits the data more accurate, whose coefficient of determination was 0.9585, and reflect the growth of fine root with soil depth variation well, according to the investigation on fine root of Robinia pseudoacacia in the Loess Plateau. It was useful to research the fine root growth and its relationship with soil water.