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Title:
Decomposcape (general): soil moisture data, Main Experiment, Site B
Access rights:
Free within projects
Usage rights:
Usage rights for Sp5; Acknowledgements: Mr. Qi
Published:
No information available
Abstract:
For the “decomposcape” approach, a total of 4131 litter bags were filled with single-species litter of Osmanthus fragrans, Pinus massoniana and Schima superba, respectively. These bags have been fixed on the soil surface across both field sites. The positioning of the litter bags differ in topographic features, and in the diversity of the newly planted tree species. By studying the litter decomposition dynamics over time, we will thus quantify the effects of topography, micro-relief, microclimate and tree diversity on decomposition dynamics. The study is part of the "Ecoscape approach". This dataset contains the soil moisture data of one leaf litter decomposition plots per VIP at site A.
Design:
Polyester bags (15 x 15 cm, 1 x 1.5 mm mesh size, 5 g litter) were used to determine the mass loss of the leaves of three local tree species: Schima superba (collected in autumn 2010 in a secondary forest near the experimental sites), Pinus massoniana and Osmanthus fragrans (both collected in a monoculture plantation near the experimental sites). The leaves were dried at 65°C for 24 hours. We exposed the litterbags at three positions (suplots) within the 35 different tree diversity plots and their corresponding replicates at both sites of the “Main Experiment”. Per subplot, three litterbags of each species were randomized and pinned directly onto the soil after removing the herb layer. Thus, a total of 3780 litterbags were deposited on 420 subplots across two sites. Additionally, a 25 cm wide frame of water permeable plastic fabric was pinned around the litterbag square to avoid weeds from growing into the subplots. After two, six and eleven months, one bag per litter species was sampled per subplot to determine the remaining dry mass of the leaves after cleaning. For the topographic components we measured the inclination, aspect and soil-shape on each subplot. To calculate the microclimatic parameters, air humidity and temperature were measured with onset®,HOBO® Pro v2 data logger (Onset Computer Corporation, Bourne, USA) every 30 min on one subplot per diversity level. Additionally, soil moisture measurements were conducted once a month with a ThetaProbe ML2x FD-Sonde and Infield7 handheld meter (UMS GmbH Munich, Germany).
Spatial extent:
Main Experiment, Site B 29°08'-29°11'N 117°90'-117°93'E
Temporal extent:
October 2011-September 2012
Taxonomic extent:
Leaf litter of Schima superba, Pinus massoniana and Osmanthus fragrans
Measurement cirumstances:
hot, sunny, mosquitos
Data analysis:
soil moisture measurements were conducted once a month with a ThetaProbe ML2x FD-Sonde and Infield7 handheld meter (UMS GmbH Munich, Germany)

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Dataset column

Name:
PTAG
Definition:
name of each plot, coded with letters and numbers. Research plots on the main experiment have a "p" in front of their IDs and then a 6 digit code: Plots in the main sites A and B are named according to their position in the original spreadsheet, in which they were designed. They consist of 6 digits: _1st digit_: Site (1:A, 2:B), _digit 2and3_: southwards row: as in spreadsheets the rows are named from the top to the bottom; _digit 4 and 5_: westward column: as in the original spreadsheet, but the letters are converted to numbers (A=01, B=02); _6th digit_: indicator, if the plot has been shifted a quarter mu. Example: "p205260": "p" means that this is a plot that is specified. "2" means, that we are at site B. Now the coordinates of the south - west corner: "0526". Since "e" is the fifth letter of the alphabet, this is Plot E26. The last digit "0" means that this plot was not moved by a quarter of a Mu, as some sites in Site A. The 6th digit can also indicate the subplot within the plot. "5", "6", "7", "8" indicate the northwest, northeast, southeast, and southwest quarter plot respectively.
Unit:
No information available
Datagroup:
BEF research plot name
Keywords:
plot, Decomposcape, Site A
Values:
p207280
p206260
p209250
p204290
p210290
Contributors:
No information available

Dataset column

Name:
PLOT_NO
Definition:
research plot name
Unit:
No information available
Datagroup:
Plot name Main experiment (letter, number code)
Keywords:
plot, Decomposcape, Site A
Values:
D29
I25
F26
G28
J29
Contributors:
No information available

Dataset column

Name:
dec_subplot_ID
Definition:
Decomposcape litter decomposition plot ID; Datagroup description: Decomposcape litter decomposition experiment data
Unit:
No information available
Datagroup:
Decomposcape subplot within Main
Keywords:
litter decomposition, Decomposcape, Ecoscape
Values:
Dec_B_D29_S2
Dec_B_F26_S2
Dec_B_J29_S2
Dec_B_G28_S2
Dec_B_I25_S2
Contributors:
No information available

Dataset column

Name:
soil_moisture
Definition:
soil moisture; Datagroup description: Decomposcape litter decomposition experiment data
Unit:
%V
Datagroup:
Soil moisture
Keywords:
litter decomposition, Decomposcape, Ecoscape
Values:
0.9
0.30000000000000004
0.7
0.4
10.1
Contributors:
Mr Qi

Dataset column

Name:
datum
Definition:
date of measurement; Datagroup description: Decomposcape litter decomposition experiment data
Unit:
No information available
Datagroup:
Date time information
Keywords:
litter decomposition, Decomposcape, Ecoscape
Values:
2012-02-04
2011-12-03
2012-04-04
2012-03-04
2012-01-03
Contributors:
No information available

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94 seidelmann medium

Katrin
Leppert (ehem. Seidelmann)

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