Associated entities to this dataset:
--------
1
. data table entity --------
Table Name:
tree width grows and sapflow in caldern measured for tree 1
Tech. Details ...
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Attribute Name -- Attribute Label
Unit
Attribute definition
datetime
--
Date and Time
not mapped
The date and time
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Date and time
Description
:
This is the date and time of the observation
record
--
Record number
Count
consecutive record number
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Record number given by logger
Description
:
Record number given by logger
Instrumentation:
Instrument:
Description:
|
Instrument: CR300_wifi
|
Vendor: Campbell
|
TreeID
--
ID of the tree
no unit
ID of the tree
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
ID of tree given by researcher
Description
:
ID of tree given by researcher
resistance_ohm
--
Mechanical resistance in ohm
Ohm
Mechanical resistance in ohm
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Measuring mechanical resistance to determine changes in tree width
Description
:
Die an 2 ca. 12 cm auseinander befindlichen Schrauben (Durchmesser 6mm) fest im Baumstamm fixierte Sensorhalterung besitzt in der Mitte einen Sensor, der nach Entfernung der Rinde (= Borke und Bast) direkt auf das Kambium aufgesetzt wird und über eine Rückspannfeder der mechanischen Widerstand [Ohm] des schwellenden oder schrumpfenden Stammes erfasst. Einbeziehung der Widerstandskonstante der Feder liefert die radiale Veränderung [µm].
Instrumentation:
Instrument:
Description: The sensor is anchored by two special screws in the heartwood. The changes outside of the heartwood correspond to the radial growth. The arrangement ensures high stability for long-term measurements.
|
Instrument: Radius dendrometer (DR)
|
Vendor: Ecomatik
|
sap_flow_raw_SF-L_left
--
Better granier based Sap Flow Data (raw) (left needle)
Millivolt
Using the SF-L sensor, temporally variable background temperature gradients can be subtracted from the temperature difference between the two needles of the sap flow sensor.
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Measuring sap flow with an improved Granier sensor
Description
:
misst an Bäumen mit Durchmesser >20 cm nach Wärmeimpuls in Nadel 1 die Spannungsdifferenz [µV] zur vertikal angeordneter Nadel 2 und liefert nach Einbezug der über horizontal benachbarten Nadeln 3 und 4 erfassten Umgebungstemperatur vertikale Temperaturdifferenzen, die unter Einbeziehung der maximal mögloichen Temperaturdifferenz (wird 100% rel. Luftfeuchte erreicht) zur interzellulären Saftflussdichte [ml/(cm²*min). Einbezug der im Baumstamm durchströmten Fläche (=Splintholz) liefert den Saftfluss in ml/min.
Instrumentation:
Instrument:
Description: https://ecomatik.de/en/products/sap-flow-sensor/sf-l/
|
Instrument: Sap Flow Sensor Type SF-L
|
Vendor: Ecomatik
|
sap_flow_raw_SF-L_center
--
Better granier based Sap Flow Data (raw)
Millivolt
Using the SF-L sensor, temporally variable background temperature gradients can be subtracted from the temperature difference between the two needles of the sap flow sensor.
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Measuring sap flow with an improved Granier sensor
Description
:
misst an Bäumen mit Durchmesser >20 cm nach Wärmeimpuls in Nadel 1 die Spannungsdifferenz [µV] zur vertikal angeordneter Nadel 2 und liefert nach Einbezug der über horizontal benachbarten Nadeln 3 und 4 erfassten Umgebungstemperatur vertikale Temperaturdifferenzen, die unter Einbeziehung der maximal mögloichen Temperaturdifferenz (wird 100% rel. Luftfeuchte erreicht) zur interzellulären Saftflussdichte [ml/(cm²*min). Einbezug der im Baumstamm durchströmten Fläche (=Splintholz) liefert den Saftfluss in ml/min.
Instrumentation:
Instrument:
Description: https://ecomatik.de/en/products/sap-flow-sensor/sf-l/
|
Instrument: Sap Flow Sensor Type SF-L
|
Vendor: Ecomatik
|
sap_flow_raw_SF-L_right
--
Better granier based Sap Flow Data (raw) (right needle)
Millivolt
Using the SF-L sensor, temporally variable background temperature gradients can be subtracted from the temperature difference between the two needles of the sap flow sensor.
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Measuring sap flow with an improved Granier sensor
Description
:
misst an Bäumen mit Durchmesser >20 cm nach Wärmeimpuls in Nadel 1 die Spannungsdifferenz [µV] zur vertikal angeordneter Nadel 2 und liefert nach Einbezug der über horizontal benachbarten Nadeln 3 und 4 erfassten Umgebungstemperatur vertikale Temperaturdifferenzen, die unter Einbeziehung der maximal mögloichen Temperaturdifferenz (wird 100% rel. Luftfeuchte erreicht) zur interzellulären Saftflussdichte [ml/(cm²*min). Einbezug der im Baumstamm durchströmten Fläche (=Splintholz) liefert den Saftfluss in ml/min.
Instrumentation:
Instrument:
Description: https://ecomatik.de/en/products/sap-flow-sensor/sf-l/
|
Instrument: Sap Flow Sensor Type SF-L
|
Vendor: Ecomatik
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