Abstract: This paper introduced the trapping web model of mark-recapture sampling for estimating the density of animal population, and reviewed its research advances Because this model is quite complicated in estimating parameters and no statistic soft is available in China, its application was limited. The authors put forward a method of spread sheeting to estimate the model parameters and embed them in the worksheet of DPS software. An example Peromyscus spp. population density near New Mexico, USA was conducted, and the future research directions of trapping web model were dincussed.

Key words: Cu, As, Glycine max, Seed germination, Seedling growth, Enzyme activity