An invaluable asset to the province is a continuing source of high quality data on the long-term effect of management treatments and regimes on stand and tree growth and development. The Coastal Stand Management Field Experiments Program, part of the Provincial Growth and Yield (GY) Program, uses statistically sound experimental design and high technical standards for establishing and remeasuring Experimental Projects (EPs). The statistical approach ensures that objective and meaningful conclusions can be drawn from the data collected from experimental plots (EPs). There are a large number of Provincial coastal growth and yield research experiments, and these have been assessed and ranked in terms of their ability to provide quality data. The resulting Coastal GY Field Experiments program consists of only those experiments and installations that can provide high quality data and achieve their treatment response objectives. This proposal is for the remeasurement of at least 131 plots (possibly more if the tendered bids come in lower than expected). The data will be collected according to provincial standards (Forest Productivity Council, 1999) by qualified contractors under an invitation to tender process and the cleaned data loaded into the Research Branch GY relational database for use in the Provincial GY Program. Priority remeasurements this year include:
EP703 Extensive Studies of Fertilizing and Thinning - 64 plots from 7 installation will be remeasured (described above). EP703 was initiated in 1971 to investigate the growth response of Douglas-fir and western hemlock at three levels of fertilization and three levels of thinning in a replicated, factorial design. The experiment originally encompassed 940 permanent plots located at 85 installations throughout coastal BC. Of the original 85 installations, 62 have been highly ranked for importance to the program and most of these high priority installations have had their 8th measurement. In addition to tree diameter, height and condition codes, data has been collected on pre-treatment forest conditions, tree ages, crown width, pathological indicators, site information, soil texture, nutrients and moisture regimes, foliar nitrogen, on-site weather stations, understorey vegetation, mortality and ingrowth. The data from this experiment is the single, largest source of data for coastal stands in BC and has provided the most important validation and calibration data for second-growth coastal hemlock and Douglas-fir. The data has been used by research organizations and consultants in BC, the Pacific northwest, and internationally. It has been used to model the spread and effects of root rot over time, effects of fertilizing and thinning, stand development, crown response and other projects that require long-term tree measurement data.
EP 368 The Adaptability of Certain Tree Species to Different Forest
Experimental Project 368 was established by the B.C. Minsitry of Forests in 1958. It is located about 8 km north of Ucuelet on the west coast of Vancouver Island. The objective of the project was to compare the growth of seven coniferous species: Douglas-fir, grand fir, amabalis fir, Port-Orford cedar, Sitka spruce, western hemlock, and western red cedar, planted on a common site. Each species is planted in 49 tree plots, replicated 7 times. The plots have been measured 7 times and were last remeasured in winter 1998.
EP 554 Correlated Curve Trend Thinning Experiment in Douglas-fir
The CCT methodology was first developed in South Africa by A.J. O?Connor (1935) and is now used throughout the world to evaluate the effects of different spacing and thinning strategies. The classical CCT experiment consists of two series of plots: a ?spacing series? and a ?thinning series?. Plots in the first series are spaced before the onset of competition and represent a range of final densities. Once the target densities are achieved, the trees are left to grow without further thinning ...
de Montigny, Louise E.. 2009. Natural Regeneration, Mortality and Residual Growth Response 25 Years after Partial Cutting on the Coast. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2009MR367
Topic: FLNRORD Research Program
Keywords: Forest, Investment, Account, (FIA), British, Columbia
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