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Felker, P., Meyer, J.M. and Gronski, S.J., 1990. Application of self-thinning in mesquite (Prosopis glandulosa var. glandulosa) to range management and lumber production. For. Ecol. Manage., 31: 225-232. To gain a better understanding of the relationships between stand density and tree volume in mesquite, seven native stands were examined. Stand densities ranged from 6 to 19 000 stems ha- 1, and estimated biomass ranged from 0.65 to 1300 kg stem -1. Regression equations were used to estimate biomass from basal diameters. A plot of estimated tree biomass vs. stand density was defined by the estimated self-thinning line: log W-- - 1.17 log d+5.22 (r e=0.95), where: W is stem fresh weight (kg); and d stand density (stems ha- 1 ). Regressions of stand density on basal diameter, lumber volume stem-1 and total biomass ha-1 were also examined. When plots deemed to not be at full stand occupancy were excluded from the data set, a regression predicted that densities of 100 stems ha -1 would produce 35-cm-basal-diameter stems. This density also gave the highest lumber yield. |
