Forest plots

Digital data collection in forest dynamics plots

1. Computers are widely used in all aspects of research but their application to in-field data collection for forest plots has rarely been evaluated. 2. We developed digital data collection methods using ESRI mapping software and ruggedized field computers to map and measure 30 000 trees in two 4-ha forest dynamics plots in wet and dry tropical forest inHawaii.We then compared our data collecti...

Increasing biomass in Amazonian forest plots.

A previous study by Phillips et al. of changes in the biomass of permanent sample plots in Amazonian forests was used to infer the presence of a regional carbon sink. However, these results generated a vigorous debate about sampling and methodological issues. Therefore we present a new analysis of biomass change in old-growth Amazonian forest plots using updated inventory data. We find that acr...

Forest plots: trying to see the wood and the trees.

Possum monitoring plots in Waione Block, Tongariro Forest

The Waione Block of Tongariro Forest contains an important kiwi population and has significant vegetation values. A system is required for routinely monitoring the effects of possum browse, the general health of the forest and re-generation of canopy species in this block. A circuit with five plots has been established, starting and finishing on Pukehinau Road.

Application of Mapped Plots for Single-Owner Forest Surveys

estimates of quantities, such as per acre volume, within conditions of interest. If the plot is half natural pine and half plantation pine, it is clear that the combined plot data are not representative of either condition. The most important mapped plot assumption made explicit in Equation 1 is that the expected amount of y on a partial plot is proportional to a. In particular, if half the plo...