Ecoscape: Terrain attributes and landform characteristics of Site B

Usage Rights

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Dataset Abstract

Results of the terrain and landform analysis on site B (EcoScape approach)

Dataset Design

No. Shortcut Description

1 crs_w - CROSSECTIONAL Curvature (Wood)
2 dic_s - DIFFERENCE Curvature (Shary)
3 dssslp - DOWNSTREAM Maximum Slope (Tarboton 1997)
4 eastnes - ASPECT Transform - Eastness
5 gf_s - GRADIENT FACTOR (Shary)
6 ho_s - HORIZONTAL Curvature (Shary)
7 loc_w - LONGITUDINAL Curvature (Wood)
8 mac_w - MAXIMUM Curvature (Wood)
9 maxsslp - MAXIMUM slope (Tarboton 1997)
10 mcca - Monte-Carlo based flow accumulation (log)
11 mec_e - MEAN Curvature (Evans)
12 mec_s - MEAN Curvature (Shary)
13 mic_w - MINIMUM Curvature (Wood)
14 northne - ASPECT Transform - Northness
15 plc_m - PLANFORM Curvature (Moore)
16 plc_s - PLANFORM Curvature (Shary)
17 plc_w - PLANFORM Curvature (Wood)
18 plc_zt - PLANFORM Curvature (Zevenbergen & Thorne)
19 prc_m - PROFILE Curvature (Moore)
20 prc_w - PROFILE Curvature (Wood)
21 prc_zt - PROFILE Curvature (Zevenbergen & Thorne)
22 rhc - Relative Planform Curvature
23 ros - Rotor Curvature (streamline curvature) (Florinsky 1998)
24 rpc - Relative Profile Curvature
25 rr - Relative Richness
26 slp - SLOPE (weighted kardinal) (Burrough, McDonell 1998)
27 tr - Topographic Ruggedness
28 trc_s - Total Ring Curvature (Shary)
29 tri - Topographic Roughness Index (Riley, De Gloria, Elliot 1999)
30 ussslp - UPSTREAM Maximum Slope

Geomorphons are separated into: Summit, Hollow, Slope, Ridge, Valley, Depression and Spur and related to an ID no..

Spatial Extent

Experimental Site B
29°08'-29°11'N
117°90'-117°93'E

Temporal Extent

DEM and attributes were calculated in 2015.

Data Analysis

A digital elevation model (DEM) with a cell size of 5 m x 5 m was interpolated from elevation measurements with differential global positioning system (DGPS) using the ordinary kriging algorithm (Krige 1951). The 10-fold cross-validation showed a high accuracy with R²= 0.99 and a root mean square error of 1 m. Based on the DEM 30 terrain attributes were derived which characterize the local, regional, climatic and complex features of site B.
Furthermore, geomorphological units (geomorphons) were derived with the algorithm of Jasiewicz & Stepinsky (2013).

To avoid multicollinearity and ensure easier interpretation, seven terrain attributes can be choosen, that (i) cover each feature of the landscape at least once, (ii) show high correlation to all soil fertility indicators within each feature and (iii) are not correlated to each other with r > 0.7.
Those attributes are: upstream steepest slope (USSSLP), downstream steepest slope (DSSSLP, both Tarboton 284 1997), planform curvature (PLC, Zevenbergen and Thorne 1987), terrain ruggedness index (TRI, Riley et al. 1999), relative richness (RR, Behrens 2003), eastness and northness (Roberts 1986) and Monte-Carlo based flow accumulation (MCCA, Behrens et al. 2008).

Data columns available in the raw data part of this dataset

plot_number
Plot Letter Code; Datagroup description: Plot name (letter, number code)
Data group: Plot name Main experiment (letter, number code)
Values
D26
D27
C27
D25
D28
crs_w
crs_w
Data group: Digital terrain attribute
Values
-0.06043091714
-0.05795526599
-0.02600485913
-0.02615358148
-0.01203163906
dic_s
dic_s
Data group: Digital terrain attribute
Values
0.0217491269
0.00887947051
0.0163904583
-0.00550560327
0.01765976846
dssslp
dssslp
Data group: Digital terrain attribute
Values
0.31606895504
0.30990022765
0.30351995409
0.31525919185
0.30128200352
eastnes
eastnes
Data group: Digital terrain attribute
Values
0.00270588655
-0.00787934202
-0.00855528218
0.01101907107
-0.02309931954
gf_s
gf_s
Data group: Digital terrain attribute
Values
0.24605291247
0.25429812533
0.27666087563
0.23150268556
0.23725518985
ho_s
ho_s
Data group: Digital terrain attribute
Values
0.00987340693
-0.00044937832
0.02532342301
0.01621769498
-0.02468580912
loc_w
loc_w
Data group: Digital terrain attribute
Values
0.03075241298
-0.00650768161
-0.09753662025
0.01105379074
0.05407939984
mac_w
mac_w
Data group: Digital terrain attribute
Values
-0.07098309681
-0.03826618319
-0.06033829039
0.07181790099
0.01392282617
maxsslp
maxsslp
Data group: Digital terrain attribute
Values
0.31525919185
0.31596273528
0.31606895504
0.32823909899
0.33022570897
mcca
mcca
Data group: Digital terrain attribute
Values
0.98219118957
0.96991978373
0.98171577851
0.98223153674
0.91486953585
mec_e
mec_e
Data group: Digital terrain attribute
Values
0.11725701226
0.00660923549
-0.01806640625
0.02327021846
-0.06319863456
mec_s
mec_s
Data group: Digital terrain attribute
Values
-0.00777321143
0.01811130583
0.01362886887
0.00026918099
0.00649020276
mic_w
mic_w
Data group: Digital terrain attribute
Values
-0.00740639881
0.03512957582
-0.03846640369
-0.04164250222
-0.02107062539
northne
northne
Data group: Digital terrain attribute
Values
-0.01250931045
-0.00595224667
-0.00018980423
0.01293637037
0.00877838682
plc_m
plc_m
Data group: Digital terrain attribute
Values
-0.01529074488
-0.0077433532
0.02040453757
-0.01318572795
0.00827730847
plc_s
plc_s
Data group: Digital terrain attribute
Values
-0.01173338312
-0.01409344718
0.00512943819
0.00925330089
-0.00154574146
plc_w
plc_w
Data group: Digital terrain attribute
Values
0.01518453628
-0.0327026803
-0.00453523949
0.01559243138
0.00487399391
plc_zt
plc_zt
Data group: Digital terrain attribute
Values
0.03075241298
-0.09753662025
0.05407939984
0.01105379074
-0.00650768161
prc_m
prc_m
Data group: Digital terrain attribute
Values
0.00790074714
-0.01599968722
-0.02915177467
0.04709228877
-0.04246708606
prc_w
prc_w
Data group: Digital terrain attribute
Values
0.08048713744
-0.05399673053
0.04524088486
0.01102726047
0.02874788802
prc_zt
prc_zt
Data group: Digital terrain attribute
Values
-0.05407939984
-0.03075241298
0.00650768161
0.09753662025
-0.01105379074
rhc
rhc
Data group: Digital terrain attribute
Values
0.08417555002
-0.08316308481
0.07592346191
0.05074267917
-0.06346855164
ros
ros
Data group: Digital terrain attribute
Values
0.0010442143
-0.00492334316
0.00332029856
-0.00361622111
-0.00357872696
rpc
rpc
Data group: Digital terrain attribute
Values
0.00189923302
0.00234066861
-0.00313090712
-0.00193311717
-0.00018548057
rr
rr
Data group: Digital terrain attribute
Values
22.267206265
21.403509064
23.554256015
22.300944622
22.323048953
slp
slp
Data group: Digital terrain attribute
Values
0.23471236808
0.28199632351
0.24035474128
0.25955594637
0.25080059923
tr
tr
Data group: Digital terrain attribute
Values
102.73602875
102.5416983
101.17422627
101.09953393
102.20203461
trc_s
trc_s
Data group: Digital terrain attribute
Values
0.00029198979
0.00018612213
0.00018855927
0.00030981125
0.0001621012
tri
tri
Data group: Digital terrain attribute
Values
1.1962825855
1.3363956053
1.2765862718
1.2141314401
1.2719911909
ussslp
ussslp
Data group: Digital terrain attribute
Values
0.18038875237
0.22614582357
0.18857434475
0.17967896978
0.18369152332
geomorph
geomorph
Data group: Digital terrain attribute
Values
Summit
Spur
Hollow
Ridge
Slope
geomorph_ID
geomorph_ID
Data group: Digital terrain attribute
Values
6
7
3
2
5