Abstract: It is generally difficult to survey in primary forests located on high altitude region. However, it is convenient to identify and to recognize plots accompanied by GPSand GIStechniques, which can also display the spatial pattern of arbors precisely. Using the method of rapid static positioning cooperated with tape measure, it is concluded that except some points, the positioning was relatively precise, the average value of RMSwas 2.84, variance was 2.96, and △B, △L, and △H were 1.2, 1.2, and 4.3m with their variances being ±0.6, ±1. 1, and ±21.1, respectively, which could meet the needs of forestry management sufficiently. Accompanied by some other models, many ecological processes under small and even medium scale, such as the dynamics of gap succession, could also be simulated visually by GIS. Therefore, the techniques of "2S" were patent for forest ecosystem management under the fine scale, especially in the area of high altitude.