COVID-19

In consideration of the health and wellbeing of our staff and in keeping with advice from health organisations, all employees are currently working from home. FWPA activities are functioning as per usual and we do not expect any major disruptions to our services. More information.

Analysis of Nutrient Depletion in a Radiata Pine Plantation

Analysis of Nutrient Depletion in a Radiata Pine Plantation

This project analysed the effects of accelerated loss of nutrients from a pine plantation site, looking at forest productivity and nutrient status. Over 16 years, at approximately six monthly intervals, all forest litter in some of the experimental plots was raked up and removed. Raked and unraked plots were either left as is, had nutrients completely replaced or had nutrients replaced to adjust for imbalances between nutrients in litter and those in the tree stem. All plots were thinned at 14 years.

Up to the time of thinning, raking reduced basal area increment (BAI) by 25% while raking together with replacement of nutrients reduced BAI by about 12%. Adding nutrient to unraked plots led to BAI increases of up to 14%. The raking treatment reduced foliage nitrogen and this was correlated with reduced growth while other nutrients such as boron and sulphur were reduced but not to a degree to affect growth or health.

The results were used to assess the effects on soil nutrient status and growth of different harvesting regimes (wood only, wood plus bark, total tree). The balance of inputs and outputs of nitrogen was also compared with initial soil nutrient contents and was related to relative growth rates but the changes due to harvesting wood only are probably difficult to detect at an operational level.

Reference Number:
PRC202-1011

Fact Sheet:
PRC202-1011J-Paper_abstract_and_citation.pdf

FWPA Newsletters

FWPA regularly distributes industry updates and information through e-newsletters including ForWood, R&DWorks, Statistics Count and The Ultimate RenewableTM Partner Update. ForestLearning, our education program for teachers, educators and school children, also publishes a quarterly e-newsletter and ensures school communities and the public are informed on Australian forests and forest-based products.

Additionally, WoodSolutions publishes a newsletter that addresses design and build professionals – architects, building designers, engineers and others involved in specifying the choice of building materials.

For more information on our mailing lists or to subscribe click the link below.

Subscribe

R&D Works

ForWood

The Ultimate Renewable Partner Program

WoodSolutions

ForestLearning