Pin-point method (ecology)

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The pin-point method (or point-intercept method) is used for non-destructive measurements of plant cover and plant biomass.[1][2]

In a pin-point analysis, a frame (or a transect) with a fixed grid pattern is placed above the vegetation. A pin that is inserted vertically through one of the grid points into the vegetation will typically touch a number of plants, and the number of times the pin touches different plant species is recorded. This procedure is repeated at each grid point.


  1. ^ Coker, Kent A.; Coker, P. (1992). Vegetation Description and Analysis – A Practical Approach. New York: John Wiley. 
  2. ^ Jonasson, Sven (1988). "Evaluation of the Point Intercept Method for the Estimation of Plant Biomass". Oikos. 52: 101–106. doi:10.2307/3565988.