Transcript PPT file
TREMA
Tree Management and Mapping software
Raintop Computing - Oxford
What is TREMA?
TREMA is database and
analysis software that helps
forest managers and
researchers organise,
analyse and publish their
data efficiently and flexibly.
TREMA is the tool for
Forestry
Botany
Ecology
Biodiversity assessment
Conservation
Environmental Impact assessment
Data you can store in TREMA
Species, Common name, Family, Genus,
subspecies, Volume equation, Species group,
Minimum legal diameter, Habit, Latex colour,
Buttresses, Crown width equation, Leaf shape,
Conservation value, Timber value, Protection
status, Commercial status, uses, and more …
TREMA has a core of
standard fields. Users
can add their own fields
without restriction.
The key ingredients of all
TREMA databases are:
Habitat type Forest reserve forest type, plot map
reference, plot manager/owner, soil type, climate
zone, Ordination score, and more ..
Plot number, Plot type, DBH, Girth, Plot area,
Height, Stem form, Canopy score, Seed tree
density, local rarity, Year last logged, annual
increment, recruitment and mortality, barcode,
Year last logged, Selection status, Log number,
and more …
Species information
Place information
Plot and other sample data
Plots and other sample types
In TREMA, you can define
many types of sample in a
single database. Typical
examples are:
Forest inventory data
Stock maps
Permanent sample plots
Botanical survey
Biodiversity assessment
Managing species data
TREMA has
many tools to
help handle the
complexity of
species names
and uses in
tropical forest
Multiple local names
Auto synonym
updates
Species linked volume
equations
Add your own species
fields
A tool for forest inventory
TREMA can handle any
size, shape or layout of
plot, as well as plotless
samples for rapid
biodiversity surveys
Output Volume, Basal area,
stem density tables at the
touch of a button
Define your own tree volume
equations or use the standard
ones provided
Optional error statistics
Permanent Sample Plots
TREMA’s inbuilt functions
allow users to error check
and analyse single and
multiple PSP enumerations
including increment,
recruitment and mortality
rates.
Store data from multiple
enumerations
Error-checking is facilitated by
inbuilt functions
Calculate increment, mortality and
other time-related statistics
PSP mapping, for example, to
display areas with higher mortality
Grid / cell functions
Yield allocation
The ability to plan and
monitor the selection of
specific trees within
economically and
ecologically viable limits is
fundamental to sustainable
selective logging activity
Forest management increasingly
requires timber yield to be allocated
based on stock maps
TREMA handles complex rules for
this process
Manual yield allocation is also
possible
Biodiversity assessment
The management of lists of
species in different places is
a basic TREMA skill, but you
can do much more to
prioritise conservation areas
or assess biodiversity
impact
Rank species according to your
own criteria – e.g. rarity
Highlight hotspots in your area
based on species scores
Perform ordinations to show forest
types in your data
Facilitate objective EIAs
Link to botanical voucher data
Mapping
TREMA’s mapping functions
provide all the map output
most users require for tree
plots and distribution maps,
either directly or through
links to ArcView.
Trema has an internal interactive
mapper and links to ArcView and
other GIS systems
Style-setting on forest maps can
be automated, e.g. to give trees a
symbol for the species, size by
diameter and colour by commercial
class
Tree coordinates can be calculated
from survey data
Stand tables
Stand tables can be
produced individually
or in automated
sequences
The basic table categories are
for Stems, Volume and Basal
area
Size class scheme, Volume
equations, filters and Area
settings can be adjusted
Tables can also be restricted
to a selected species group
Results can be printed
directly or exported to Excel or
Word files
Adding data is easy
TREMA has rapid data entry
and editing facilities with
functions familiar to users
of Excel and Access. But,
TREMA has many
advantages over standard
spreadsheets and
databases:
Intelligent dictionaries to speed up
input of e.g. species names, volume
equations, plot localities.
Awareness of data structures
common to typical forest/ plant
databases
Specialized sample/plot data
checking functions
Flexible reporting
Users can design their
own simple or complex
report formats and store
these in the central
TREMA reports library
Reports can include graphics,
for example species images
and maps
Data can be calculated for the
report (e.g. total volume) or
included from a linked table
(e.g. Plant Family), even if the
current data-file does not
include this information.
Reports can be printed
directly from TREMA or sent to
your word processor
The benefits of TREMA
• Efficient use and reuse of data
• Easy archival of all
your data in one
database
• Enter your data once
for multiple outputs
• Simple and complex,
pre-defined and
custom analyses all
made easy