Title:
Main Experiment: Kinetic energy of rain drops in the main experiment - data
Access rights:
Free for members
Usage rights:
No information available
Published:
No information available
Abstract:
Soil erosion by water is an important process regarding ecosystem stability and ecosystem functions; this is especially true for subtropical regions with high intensity rainfall. Rainfall erosivity is one important factor in estimating soil erosion as an ecosystem function under forest. The power of raindrops to detach sediment at the soil surface is influenced by drop size and velocity. When passing through vegetation, rain drop size as well as rain drop velocity are changed depending on several vegetation parameters e.g. leaf area index (LAI). The role of biodiversity as one of these vegetation parameters on soil erosion processes is not yet clear and more information on the spatial distribution of throughfall under vegetation canopies is needed. To measure biodiversity effects on throughfall kinetic energy (TKE), splash cups have been used. 1800 Splash Cups were installed in the field during five different rainfall events on 40 plots with different tree diversity levels with a total of 24 tree species. For investigating spatial distribution of TKE, these splash cups have been set up in distinct distances from tree individuals (15cm, 30cm and 45cm away from stem, in the middle of two and four individuals, under the first branch, at the intersection of a 45cm and 105cm circle around two stems and one free from vegetation to determine freefall kinetic energy).
Design:
360 splash cups on 40 VIPs and VIPreps covering tree diversity level from 1 to 24. 9 splash cup on each plot, 1 splash cup is freefall reference, 8 splash cups under distinct position in core area.
Spatial extent:
Main Experiment Site A
29°08'-29°11'N
117°90'-117°93'E
Temporal extent:
May to July 2013
Taxonomic extent:
No information available
Measurement cirumstances:
No information available
Data analysis:
LME, Wald tests for significances
Filter:
Dataset column
Name:
Site
Definition:
Indicates the experimental site within the BEF-China Project
Unit:
No information available
Datagroup:
Experimental Site
Keywords:
Main Experiment, Site
Values:
| A |
Contributors:
No information available
Dataset column
Name:
plot
Definition:
Experimental Plot within Site
Unit:
No information available
Datagroup:
Plot name Main experiment (letter, number code)
Keywords:
Main Experiment, plot
Values:
| E34 |
| E24 |
| E31 |
| E33 |
| C32 |
Contributors:
No information available
Dataset column
Name:
position
Definition:
Specific splash cup position on core area of each plot:
position 1: 15cm away from tree stem
position 2: middle of two trees
position 3: middle of four trees
position 4: 45cm away from tree stem
position 5: 45cm x 120 cm intersection
position 6: first branch
position 7: 75cm x 75cm intersection
position 8: 30 cm away from tree stem
position 9: no vegetation reference
Unit:
No information available
Datagroup:
Splashcup position
Keywords:
No information available
Values:
| P5 |
| P3 |
| P4 |
| P2 |
| P1 |
Contributors:
No information available
Dataset column
Name:
sandloss
Definition:
sandloss
Unit:
g / 16,6cm²
Datagroup:
Deriving kinetic energy from sand loss
Keywords:
No information available
Values:
| 0.08 |
| 0.01 |
| 0.12 |
| 0.11 |
| 0.1 |
Contributors:
No information available
Dataset column
Name:
precip_cm
Definition:
rainfall measured at each splash cup with rainfall bottle
Unit:
cm
Datagroup:
Precipitation
Keywords:
No information available
Values:
| 0.7 |
| 0.6 |
| 0.3 |
| 0.4 |
| 0.5 |
Contributors:
No information available
Dataset column
Name:
precip_ml
Definition:
rainfall measured at each splash cup position
Unit:
ml
Datagroup:
Precipitation
Keywords:
No information available
Values:
| 1 |
| 103.27 |
| 100 |
| 106.54 |
| 109.81 |
Contributors:
No information available
Dataset column
Name:
event
Definition:
rainfall event in summer 2013, measured with splash cups
Unit:
No information available
Datagroup:
Rainevent for determinig kinetic energy of rainfalls
Keywords:
No information available
Values:
| E2 |
| E4 |
| E3 |
| E5 |
| E1 |
Contributors:
No information available
Dataset column
Name:
precip
Definition:
total rainfall amount climate station A
Unit:
mm
Datagroup:
Precipitation
Keywords:
No information available
Values:
| 185.7 |
| 6.6 |
| 39.3 |
| 61.2 |
| 23.3 |
Contributors:
No information available
Dataset column
Name:
intensity_mean
Definition:
mean rainfall intensity per rainfall event
Unit:
mm/h
Datagroup:
Precipitation
Keywords:
No information available
Values:
| 2.83 |
| 2.29 |
| 4.25 |
| 3.42 |
| 6.07 |
Contributors:
No information available
Dataset column
Name:
peak_intensity_30
Definition:
peak intensity during 30 minutes rainfall
Unit:
mm
Datagroup:
Precipitation
Keywords:
No information available
Values:
| 12.9 |
| 4.2 |
| 4 |
| 4.8 |
| 19.2 |
Contributors:
No information available
Dataset column
Name:
peak_intensity_60
Definition:
peak intensity of 60 minutes rainfall
Unit:
mm
Datagroup:
Precipitation
Keywords:
No information available
Values:
| 7.2 |
| 6.2 |
| 4.6 |
| 15 |
| 21.7 |
Contributors:
No information available
Dataset column
Name:
covered_splashcup
Definition:
yes/no category variable if splash cup is covered by vegetation or not
Unit:
No information available
Datagroup:
Covered splash cup
Keywords:
No information available
Values:
| n |
| y |
Contributors:
No information available
Dataset column
Name:
LAI
Definition:
leaf area index (LAI) measured with Nikon D10 and analyzed in Hemi View over each splash cup position
Unit:
No information available
Datagroup:
Leaf Area Index (LAI)
Keywords:
No information available
Values:
| 0.026 |
| 0.02 |
| 0.028 |
| 0.03 |
| 0.014 |
Contributors:
No information available
Dataset column
Name:
ground_cover
Definition:
leaf canopy cover calculated by HemiView at each splash cup position Main Experiment Site A with values from 0 to 1.
Unit:
No information available
Datagroup:
Canopy structure
Keywords:
No information available
Values:
| 0.009 |
| 0.001 |
| 0.017 |
| 0 |
| 0.011 |
Contributors:
No information available
Dataset column
Name:
divers_level
Definition:
tree species richness of the respective study plot
Unit:
No information available
Datagroup:
Taxonomic biodiversity
Keywords:
No information available
Values:
| 16 |
| 4 |
| 24 |
| 1 |
| 2 |
Contributors:
No information available
Dataset column
Name:
species_pos
Definition:
species position of individuals influencing one splash cup
Unit:
No information available
Datagroup:
IdTree Splashcup
Keywords:
No information available
Values:
| 0710, 0810 |
| 0809, 0909 |
| 0807, 0808 |
| 0808, 0908 |
| 0811, 0911 |
Contributors:
No information available
Dataset column
Name:
species_ident_short
Definition:
species identity abbreviations, matched with data column species_pos
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
| cah_nys |
| cah |
| cae_scs |
| cah_lif |
| cae |
Contributors:
No information available
Dataset column
Name:
species_idents
Definition:
species identities of surrounding tree individuals
Unit:
No information available
Datagroup:
Species identity of surrounding tree/shrub individuals
Keywords:
No information available
Values:
| C. axillaris, C. axillaris |
| C. axillaris, Q. serrata |
| C. axillaris |
| C. axillaris, Q. serrata, L. formoasana, M. azedarach |
| C. axillaris, S. sebiferum |
Contributors:
No information available
Dataset column
Name:
elevation
Definition:
Elevation of each plot at Site A
Unit:
No information available
Datagroup:
Elevation
Keywords:
No information available
Values:
| 134.6243 |
| 115.4247 |
| 136.463 |
| 142.521 |
| 123.6013 |
Contributors:
No information available
Dataset column
Name:
aspect
Definition:
Aspect of each plot at Site A
Unit:
No information available
Datagroup:
Aspect
Keywords:
No information available
Values:
| 139.28215 |
| 165.54609 |
| 168.68288 |
| 119.21777 |
| 117.17444 |
Contributors:
No information available
Dataset column
Name:
neighbor_div
Definition:
neighbourhood diversity (i.e. the number of different species) of trees surrounding one splash cup
Unit:
No information available
Datagroup:
Helper
Keywords:
No information available
Values:
| 3 |
| NA |
| 1 |
| 2 |
| 4 |
Contributors:
No information available
No information available
No information available
No information avialable
Filter:
No information available
Filter:
No information available
Filter:
No information available
No information available
No information available
Download history
Liu
2024-10-28 09:09
Dadda
2024-10-22 09:35
Proß
2024-10-17 17:34
Proß
2024-10-14 17:34
Liu
2018-03-29 09:49
Pfaff
2017-10-16 13:22
Pfaff
2017-10-16 12:41
Song
2017-04-07 11:50
Pfaff
2017-02-09 12:53
Pfaff
2017-02-09 12:19
Pfaff
2017-02-09 12:16
Liu
2017-02-08 06:50
Pfaff
2017-01-19 13:20
Pfaff
2017-01-17 12:30
Pfaff
2017-01-11 11:18
Pfaff
2017-01-06 09:51
Pfaff
2016-03-10 14:09
Pfaff
2016-03-10 13:12
Liu
2015-12-10 07:05
Eichenberg
2015-02-10 11:24
Lang
2014-04-04 10:53