Abstract:In order to investigate the influence of typical vegetation growth to the soil surface electrochemical properties of soil surface in different regions of loess Plateau, Taking three typical regions from south to north on the Loess Plateau (Yongshouliang, Fangta, Liudaogou) and two typical herbaceous plants (Artemisia gmelinii Web., Stipa bungeana Trin.) as research objects, and the abandoned land for one year as the control, the effect of two typical herbaceous plants on soil surface electrochemical properties and their spatial difference were analyzed based on collecting soil samples and measuring the soil surface electrochemical properties. The results showed that:(1) On the Loess Plateau, compared with the abandoned land, the growth of typical vegetation communities increased the contents of clay, silt and organic matter in soil, while decreased the content of pH, bulk density and sand. (2) In the same region, Soil cation exchange capacity and specific surface area increased and surface charge density and surface electric field intensity decreased with vegetation restoration, varying in the range of 6.69~24.34 cmol/kg, 7.29~182.29 m2/g, 0.08~2.04 C/m2, 1.23~28.46 108V/m. In different regions, with the influence of the same plant species, soil cation exchange capacity and specific surface area increased the most in Yongshouliang, and the rates of soil surface electrochemical properties change were the greatest in Liu daogou. It indicated that the influence of typical herbaceous plants on soil surface electrochemical properties has spatial heterogeneity, which may be attributed to the climate, soil texture, and other factors. (3) Silt content and organic matter content were the main contributors to soil surface electrochemical properties on the Loess Plateau due to their significant correlation and the change was the main reason for the change of soil electrochemical properties on the Loess Plateau, explaining 61.0% and 11.1% of the changes, respectively.