NILEx (soil): soil erosion data

Usage Rights

This data is Free within projects.

Dataset Abstract

Litter cover plays a major role in soil erosion processes. It is known that litter cover reduces erosivity of raindrops, decreases sediment discharge and lowers runoff volume compared to bare ground. However, in the context of biodiversity, the composition of litter cover, its effect on sediment discharge and runoff volume and their influence on soil erosion have not yet been analyzed in detail. Focusing on initial soil erosion (splash), our experimental design is designated to get a better understanding of these mechanisms.

This dataset contains the results of the 2012 rainfall simulations on runoff plots within the New Integrated Litter Experiment (NILEx).

Dataset Design

96 runoff plots (40cm x 40cm) on two hill slopes inside a castanea molissima forest plantation have
been installed and filled with seven different types of litter cover. 16 one-species plots, 24 two-species plots, 4 four-species plots and 4 bare ground plots have been set up, each replicated once. We prepared 48 plots with traps (Renner solution) for soil macrofauna (diplopods and collembola), so half of the plots were kept free from fauna while the other half was accessible for fauna. Rainfall was generated artificially by using our rainfall simulator with a continuous and stable intensity of 60 mm/h. Our experiments included two runs of 20 minutes duration each, both conducted at two different time steps (summer 2012 and autumn 2012). Runoff volume and sediment discharge were measured every 5 minutes during one rainfall run. Litter coverage and litter mass were recorded at the beginning (summer 2012) and at the end of the experiment (autumn 2012).

Spatial Extent

NILEx site near main experiment site B. Castanea mollissima plantation.

Temporal Extent

Two timesteps:
- may 2012
- september 2012

Taxonomic Extent

Soil macro fauna.

Measurement Circumstances

Hot and humid :)

Paper proposal submissions

Published

2013

Data columns available in the raw data part of this dataset

phase
NILEx time step
Data group: Time series
Keywords: NILEx timesteps
Values
P1
P2
block
NILEx block
Data group: NILEx research plot
Values
D
B
C
A
plot_NILEx
NILEx plot (near site B)
Data group: NILEx research plot
Keywords: NILEx plots
Values
A05
A03
A04
A02
A01
div_level
level of leaf litter diversity
Data group: Helper
Keywords: Diversity level
Values
1
4
0
2
composition
leaf species composition
Data group: Helper
Values
ABCD
AC
AB
AD
A
species_pool
species pool
Data group: Helper
Values
S2
S1
treat
treatment (fauna or non-fauna)
Data group: Helper
Values
n
f
run
rainfall simulation: wet run (w) or dry run (d)
Data group: Helper
Values
w
d
slope
slope / inclination
Unit: degree
Data group: Inclination
Keywords: slope
Values
12.8
15.9
14.5
15.6
13.6
slope_group
slope classification
Data group: Inclination
Keywords: slope
Values
3
4
2
1
5
soil_dens
bulk density
Unit: g/cm3
Data group: Bulk density
Keywords: bulk density
Values
1.07
1.09
1.1
1.08
1.06
l_cover
soil surface cover by leaf litter; Instrumentation: Nikon D10 + Gimp
Unit: %
Data group: Vegetation layer cover
Keywords: surface cover
Values
10
0
13.25
13
12.5
moisture
soil moisture
Unit: %
Data group: Soil moisture
Keywords: soil moisture
Values
12.3
10.5
11.5
12
11.1
pH_H2O
pH (in H2O); Instrumentation: Sentix 81 and WTW pH-meter
Unit: pH
Data group: pH value
Keywords: pH
Values
4.57
4.55
4.62
4.58
4.59
* Flaiz, S. also contributed to this column.
pH_KCl
pH (in KCl); Instrumentation: Sentix 81 and WTW pH-meter
Unit: pH
Data group: pH value
Keywords: pH
Values
3.65
3.63
3.66
3.67
3.64
* Flaiz, S. also contributed to this column.
C_t
total organic carbon content; Instrumentation: Elementar Vario EL III
Unit: Mass-%
Data group: Carbon
Keywords: carbon
Values
1.16
1.19
1.02
1.18
1.07
* Flaiz, S. also contributed to this column.
N_t
total organic nitrogen content; Instrumentation: Elementar Vario EL III
Unit: Mass-%
Data group: Nitrogen
Keywords: nitrogen
Values
0.13
0.14
0.16
0.15
0.12
* Flaiz, S. also contributed to this column.
C_N
ratio organic carbon / organic nitrogen
Unit: ratio
Data group: Carbon Nitrogen ratio
Keywords: C/N ratio
Values
10.3
10.4
10.2
10
10.1
sed_dis
sediment discharge
Unit: g
Data group: Sediment discharge
Keywords: Sediment discharge
Values
0.229
0.101
0.122
0.139
0.13
C_dis_t
carbon discharge; Instrumentation: Elementar Vario EL III
Unit: g
Data group: Carbon
Keywords: carbon
Values
101.151
100.955
0
0.2
101.289
* Flaiz, S. also contributed to this column.
N_dis_t
nitrogen discharge; Instrumentation: Elementar Vario EL III
Unit: g
Data group: Nitrogen
Keywords: nitrogen
Values
0.376
0.185
0.018
0.461
0.385
* Flaiz, S. also contributed to this column.
runoff
surface runoff
Unit: ml
Data group: Surface runoff
Keywords: Surface runoff
Values
1070
1040
1020
1080
1050
C_dis_pc
carbon discharge
Unit: Mass-%
Data group: Carbon
Keywords: carbon
Values
1.61
1.49
1.74
1.72
1.78
N_dis_pc
nitrogen discharge
Unit: Mass-%
Data group: Nitrogen
Keywords: nitrogen
Values
0.17
0.16
0.15
0.19
0.18