Main Experiment: Runoff Plots in the Main Experiment - Data

Usage Rights

This data is Free within projects.

Dataset Abstract

In soil erosion research it is widely accepted that vegetation is a key factor for the type and intensity of erosion. Thus, scientists have long recognized the importance of forests for erosion control and afforestation is a common measure of soil protection. However, the mechanisms how forests protect the soil remain debated and especially the role of biodiversity is unclear.
In this experiment we quantified the initial soil erosion under forest using micro-scale runoff plots (ROPs, 40 cm x 40 cm). 70 study plots have been equipped with 5 ROPs each (350 ROPs in total). The study plots represent different levels of tree diversity ranging from 1 to 24 tree species mixtures and bare ground. The measurements took place during the rainy season from May to June 2013 with rainfall events showing intensities up to 85 mm h-1. We measured sediment discharge, runoff volume, soil surface cover and canopy cover in the field. In addition, organic carbon and nitrogen contents in eroded sediments were analysed.

Dataset Design

350 runoff plots on 70 VIPs covering tree diversity levels from 0 to 24.

Spatial Extent

Experimental Site A and B

Temporal Extent

May to June 2013

Data Analysis

GLM, LME

Paper proposal submissions

Published

2014

Data columns available in the raw data part of this dataset

PTAG
BEF China plot identification
Data group: Helper
Values
p105340
p105330
p103320
p105310
p107330
site
Experimental site
Data group: Helper
Values
A
B
plot
VIP number
Data group: Helper
Values
E31
C32
E33
E34
D29
rop
runoff plot indentification
Data group: Helper
Values
1
2
5
4
3
timestep
timestep
Data group: Helper
Values
1
2
slope_rop
slope angle at every ROP
Unit: degree
Data group: Inclination
Keywords: slope
Values
16
13
14
10
15
slope
slope angle VIP
Unit: degree
Data group: Inclination
Keywords: slope
Values
18
19
21
20
15
asp
exposition
Unit: degree
Data group: Aspect
Values
121
111
137
130
14
asp_com
exposition class (N, S, W, E)
Data group: Aspect
Values
N
S
W
E
altitude
VIP altitude
Unit: m
Data group: Elevation
Values
125
119
129
126
127
surface_cov_tot
surface cover total
Unit: %
Data group: Surface sealing
Values
10
1
0
11
12
* Kathrin Käppeler also contributed to this column.
surface_cov_crust
surface cover biocrusts
Unit: %
Data group: Surface sealing
Values
0
10
11
12
1
* Kathrin Käppeler also contributed to this column.
surface_cov_stone
surface cover stones
Unit: %
Data group: Surface sealing
Values
10
12
1
0
11
* Kathrin Käppeler also contributed to this column.
soil_dens
soil density
Unit: g/cm3
Data group: Bulk density
Keywords: bulk density
Values
0.91
0.89
0.83
0.93
0.92
spec_numbers
number of tree species within the respective experimental plot (also "plot diversity level")
Data group: Taxonomic biodiversity
Keywords: Diversity level
Values
16
0
24
2
1
tree_cmp
tree composition surrouding the runoff plots. Species names in latin annotated in a consecutive way with genus abbreviated
Data group: Neighbourhood diverstiy
Keywords: neighbourhood richness, runoff plots
Values
A. fortunei_B. luminifera_C. fargesii_E. chinensis_M. leptophylla_M. thunbergii_M. yuyuanensis_Q. phillyreoides
A. fortunei
A. altissima_A. fortunei_B. luminifera_C. fargesii_C. biondii_E. chinensis_E. glabripetalus_E. japonicus_I. polycarpa_M. grijsii_M. leptophylla_M. thunbergii_M. yuyuanensis_M. flexuosa_Ph. bournei_Q. phillyreoides
A. altissima_C. biondii_E. glabripetalus_E. japonicus_I. polycarpa_M. grijsii_M. flexuosa_Ph. bournei
A. altissima
ground_cover
leaf canopy cover
Data group: Canopy structure
Values
0.0005085749174155163
0
0.00043103069818972717
0.00012185789980401207
0.00043897689407601526
lai
leaf area index
Data group: Leaf Area Index (LAI)
Values
0.00213253911333633
0.001953125
0
0.008384492692536369
0.004035275015789236
start_date
start measurement
Unit: dd.mm.yyyy
Data group: Date time information
Values
2013-05-21
2013-05-16
2013-05-19
2013-05-17
2013-05-20
sample_date
date of sampling
Unit: dd.mm.yyyy
Data group: Date time information
Values
2013-06-06
2013-06-08
2013-06-04
2013-06-09
2013-06-03
days
days between start and sampling date
Data group: Date time information
Values
11
16
10
12
15
precip
rainfall amount climate station A
Unit: mm
Data group: Precipitation
Values
100.45
50.47
46.03
51.58
53.68
precip_hours
hours of rainfall
Data group: Date time information
Values
25.7
28.1
25.3
14.6
42.7
intensity_mean
mean intensity
Unit: mm/h
Data group: Precipitation
Values
2.450197628458498
1.7910505836575876
2.34696261682243
1.181967213114754
1.2079625292740046
intensity_peak
peak intensity
Unit: mm/h
Data group: Precipitation
Values
83.04
11.4
45.24
45.2
precip_eros
rainfall amount classified erosive
Unit: mm
Data group: Precipitation
Values
34.01
54.42
80.16
100.45
46.03
precip_eros_hours
hours of classified rainfall
Data group: Date time information
Values
2.33
42.8
17.1
28.1
25.7
intensity_eros_mean
mean intensity (erosive event)
Unit: mm/h
Data group: Precipitation
Values
3.182456140350877
2.34696261682243
14.59656652360515
2.852669039145907
1.7910505836575876
intensity_eros_peak
peak intensity (erosive event)
Unit: mm/h
Data group: Precipitation
Values
45.2
45.24
83.04
11.4
precip_events
Rainfall event no. (erosive)
Data group: Precipitation
Values
EII, EIII
EI, EII, EIII
EIV
EI, EII
EIII
precip_rop
rainfall on ROP
Unit: mm
Data group: Precipitation
Values
104.14902624894158
103.30228619813718
102.45554614733277
101.60880609652837
100.76206604572396
precip_rop_eros
precip_rop_eros
Data group: Precipitation
Values
102.45554614733277
101.0941236459023
100.76206604572396
100.35078450144714
101.60880609652837
runoff
surface runoff (1600 cm2)
Unit: ml
Data group: Surface runoff
Keywords: Surface runoff
Values
10131
10010
1000
1010
10071
infiltration
infiltration (1600cm2)
Unit: ml
Data group: Infiltration
Keywords: Infiltration
Values
10041.5783234547
10274.056731583403
10243.887383573245
10288.801016088062
10163.751058425065
sed_dis
sediment discharge
Unit: g
Data group: Sediment discharge
Keywords: Sediment discharge
Values
10.19
10.3
0.73
10
0.9
sed_dis_stan
sediment discharge standardized
Unit: kg/m2/month
Data group: Sediment discharge
Values
0.4990272373540857
0.1671728971962617
0.552491103202847
0.3658878504672897
0.19210526315789472
N_dis_t
N total in sediment
Unit: kg/m2/month
Data group: Nitrogen
Values
0.0008415420560747664
0.00133696261682243
0.0009989473684210526
0.0014307476635514016
0.0003343457943925234
N_dis_pc
N percentage in sediment
Unit: Mass-%
Data group: Nitrogen
Keywords: nitrogen
Values
0.15
0.11
0.1
0.14
0.13
* Flaiz, S. also contributed to this column.
C_dis_t
C total in sediment
Unit: kg/m2/month
Data group: Carbon
Values
0
0.01024485981308411
0.01755842105263158
0.017065934579439255
0.004831296728971963
C_dis_pc
C percentage in sediment
Unit: Mass-%
Data group: Carbon
Keywords: carbon
Values
10.15
10.09
10.21
10.38
10.45
* Flaiz, S. also contributed to this column.