Nuoro Forestry School - Università di Sassari - ITALY: First assessment of pinus plantations site quality...

Nuoro Forestry School - Università di Sassari - ITALY: First assessment of pinus plantations site quality...: "The purpose of this work is to determinate the environmental factors that influence on the Pinus spp. stand yield. This work is a support ...

Processing the first round of measurements we have obtained some interesting results.

Considering that elevation is directly related to precipitation, which is the most limiting factor in Mediterranean ecosystems, for the first round this factor was used to stratify the sampling. Using the rpart function of statistical software R, that applies the recursive partitioning algorithm, it appeared that rather than elevation it would be promising to consider the North-South aspect direction as stratification guide.

Actually this second factor is related to irradiance an site humidity. This result may be important for future stratification in order to estimate stands fertility.

This work, such as previously described, stopped at the first iteration, has been presented the last July as a of Master degree thesis in Foresty and Environmental science. In order to support the "Legno…" project this work should be concluded. Just for this we are preparing a project to send to the Regione Autonoma della Sardegna in the hope to get funding that allow us to stratify the forest district of Arci-Grighine according to fertility of coniferous plantation.

About Linux

Problems installing JGR (Java GUI for R)

Here I'm going to explain how I could install the JGR package.
The first time the console gave me an error because it couldn't install the dependencies of JGR (iPlots, JavaGD, rJava). The problem was in the missed packages in ubuntu (not in R).
I had to install the (sudo apt-get install [package name])

default-jre
default-jdk

packages, and after run in the Linux bash R CMD javareconf, the output should be similar to

Java interpreter : /usr/bin/java
Java version : 1.6.0_20
Java home path : /usr/lib/jvm/java-6-openjdk/jre
Java compiler : /usr/bin/javac
Java headers gen.: /usr/bin/javah
Java archive tool: /usr/bin/jar
Java library path: $(JAVA_HOME)/lib/amd64/server:$(JAVA_HOME)/lib/amd64:$(JAVA_HOME)/../lib/amd64:/usr/java/packages/lib/amd64:/usr/lib/jni:/lib:/usr/lib
JNI linker flags : -L$(JAVA_HOME)/lib/amd64/server -L$(JAVA_HOME)/lib/amd64 -L$(JAVA_HOME)/../lib/amd64 -L/usr/java/packages/lib/amd64 -L/usr/lib/jni -L/lib -L/usr/lib -ljvm
JNI cpp flags : -I$(JAVA_HOME)/../include

Updating Java configuration in /etc/R
/usr/lib64/R/bin/javareconf: 331: cannot create /etc/R/Makeconf.new: Permission denied
*** cannot create /etc/R/Makeconf.new
*** Please run as root if required.

After I installed JGR without problems.

EVENT: 27th of May 2011 - Public seminar on "Research in forestry for Sardinia"

The event offers three invited speaches:

1. Planning and management of forests seen from the "territorialist" perspective, Massimo Carta (Florence University)
2. "Forest types" as tool for operational forest management planning, Giuseppe Pignatti (CRA, Rome)
3. Ortobene "Lehrwald" project (Roberto Scotti, Sassary University)

You are invited to contribute. Submit a poster or short presentation proposal in the event site:  MUN2011 - Giornata di studio ricerca di base

Welcome

We have very different activities going on.
Initially the blog will probably be quite unstructured, maybe we will find some order as posts accumulate. Lets grow freely to begin.
Good work, rs