Dietrich, K. & Münch, E. (2016): <b>inorganic and total P status NUMEX.</b> <i>Available online (http://www.tropicalmountainforest.org/data_pre.do?citid=1453) from DFG-FOR816dw.</i>
Resource Description
Title:
inorganic and total P status NUMEX
Short Name:
P status NUMEX
FOR816dw ID:
1453
Publication Date:
2016-04-07
Last Update Date:
2016-04-07
License and Usage Rights:
PAK 823-825 data user agreement. (www.tropicalmountainforest.org/dataagreementp3.do)
Within the scope of the NUMEX experiment in tropical montane forests of South Ecuador, we measured Bray-extracted inorganic P and total P by means of a HNO3 digestion. We tested whether P availability was affected by moderate P and N fertilization along an altitudinal gradient (1000, 2000, and 3000m a.s.l.). Therefore, we sampled the organic layer and mineral soil of fertilization (N, P, N+P) and control plots.
Keywords:
| soil moisture | pH | phosphorus availability |
Associated entities to this dataset:
--------
1
. data table entity --------
Table Name:
pstatus2014
Tech. Details ...
Physical Structure Description:
Object Name:
1453_pstatus2014_complete.csv
Size (byte):
2781
Text Format:
numHeaderLines:
1
attributeOrientation:
column
fieldDelimiter:
,
Number of Records:
96
Attribute(s) ...
Attribute Name -- Attribute Label
Unit
Attribute definition
PlotID
--
ID of the plot
no unit
ID of the plot
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Plot ID in NUMEX
Description
:
Plot ID in NUMEX
Horizon_symbol
--
horizon symbol of the soil
no unit
horizon symbol of the soil
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
WRB 2006
Description
:
WRB 2006
treatment
--
Treatment
no unit
Treatment of individuals with respect to experiments
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Nutrients added to the respective plot
Description
:
N, P or N + P are added to the plots
PHs_H2O
--
pH of soil H2O
Unitless
pH of soil measured in water
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Measuring pH value of soil in water
Description
:
Measuring pH value of soil in water (soil:water ratio 1:10 [m/m]) with a glass electrode
P_soil_Bray
--
orthophosphate Bray-extracted
Milligram per kilogram
plant available orthophosphate
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
Measuring chemical compounds: phosphate PO4: with molybdat method
Description
:
Measuring chemical compounds: phosphate PO4: with molybdat method
TE_P
--
Total P
Milligram per kilogram
Total elements Phosphorus (HF-HClO4-HNO3)
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
total P by means of HNO3 digestion
Description
:
microwave digestion of dry matter with HNO3 and determination with ICP-OES, PerkinElmer
P_soil_factordm
--
factor of dry matter
Unitless
sample dry weight divided through moist weight
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
--- Step
1
---
Title
:
dry weight of biomas was measured after constant weight was reached in the drying chamber
Description
:
dry weight of biomas was measured after constant weight was reached in the drying chamber
