Ecoscape: Terrain attributes and landform characteristics of Site A

Usage Rights

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Dataset Abstract

Results of the terrain and landform analysis on site A (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 A
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 A.
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)
Keywords: Site A, location
Values
C32
C33
B35
B34
C31
crs_w
crs_w
Data group: Digital terrain attribute
Values
-0.02198860958
-0.0210644487
-0.00173293008
-0.01427393888
-0.00177997012
dic_s
dic_s
Data group: Digital terrain attribute
Values
0.0061367684
0.00132754115
-0.0051646383
0.00215532705
-0.00871466957
dssslp
dssslp
Data group: Digital terrain attribute
Values
0.19637904776
0.19030828029
0.25853540838
0.24346943945
0.22069708943
eastnes
eastnes
Data group: Digital terrain attribute
Values
-0.01191652929
0.0310297872
0.01916673466
-0.00710035013
-0.00277701925
gf_s
gf_s
Data group: Digital terrain attribute
Values
0.20824754119
0.14710459473
0.24801011483
0.19273906325
0.2480050693
ho_s
ho_s
Data group: Digital terrain attribute
Values
0.00356720388
0.00912201688
0.00619860701
0.00013216212
-0.01081247821
loc_w
loc_w
Data group: Digital terrain attribute
Values
-0.01278098164
-0.00517178262
0.00045901842
-0.01132880774
0.02066103909
mac_w
mac_w
Data group: Digital terrain attribute
Values
0.02094673888
0.05789646283
-0.031240280119999998
0.01488333404
0.01058919221
maxsslp
maxsslp
Data group: Digital terrain attribute
Values
0.20471891016
0.22410207689
0.19637904776
0.2670233196
0.26326871514
mcca
mcca
Data group: Digital terrain attribute
Values
1.0165073609
0.874522084
0.933557625
1.0476643224
1.077843895
mec_e
mec_e
Data group: Digital terrain attribute
Values
0.01629882813
-0.01993408203
-0.04750854492
0.01047566732
0.03395589193
mec_s
mec_s
Data group: Digital terrain attribute
Values
0.00531993964
-0.00172529353
0.00586590484
-0.00592562746
0.00325164801
mic_w
mic_w
Data group: Digital terrain attribute
Values
0.0113735908
0.00582459101
-0.00419876296
-0.00812021947
-0.0146382428
northne
northne
Data group: Digital terrain attribute
Values
0.01354978904
0.00956636502
0.01843186195
-0.01769776413
0.01112145869
plc_m
plc_m
Data group: Digital terrain attribute
Values
-0.00159919551
-0.00211225364
-0.00254486641
-0.00037474394
0.00044337603
plc_s
plc_s
Data group: Digital terrain attribute
Values
-0.00284684889
0.00273470458
0.00203820661
-0.00128078905
0.00547501882
plc_w
plc_w
Data group: Digital terrain attribute
Values
-0.00013496258
-0.00302538156
0.00995667167
-0.00217336748
-0.00136263944
plc_zt
plc_zt
Data group: Digital terrain attribute
Values
-0.01278098164
-0.01132880774
0.02066103909
-0.00517178262
0.00045901842
prc_m
prc_m
Data group: Digital terrain attribute
Values
-0.01060018824
-0.00256423339
-0.0092256628
-0.01053656846
0.00276915684
prc_w
prc_w
Data group: Digital terrain attribute
Values
0.00256423339
0.0092256628
-0.00276915684
0.01060018824
0.01053656846
prc_zt
prc_zt
Data group: Digital terrain attribute
Values
0.01132880774
-0.00045901842
-0.02066103909
0.01278098164
0.00517178262
rhc
rhc
Data group: Digital terrain attribute
Values
-0.04299552918
0.01742958069
-0.06630643209
0.02308174133
-0.01470214844
ros
ros
Data group: Digital terrain attribute
Values
-0.0004747601
0.00209744467
-0.00256331682
0.00380551627
-0.00402275451
rpc
rpc
Data group: Digital terrain attribute
Values
0.00101593429
0.0010193349
-0.00120197002
0.00164543407
-0.0017772954
rr
rr
Data group: Digital terrain attribute
Values
11.663366623
0
11.501650461
10.970297356
11.485148811
slp
slp
Data group: Digital terrain attribute
Values
0.25121204033
0.19407648096
0.25130976637
0.14826816606
0.20989153564
tr
tr
Data group: Digital terrain attribute
Values
101.07729584
0
101.04676613
100.36051849
102.86196136
trc_s
trc_s
Data group: Digital terrain attribute
Values
0.00013196507
0.00014495176
0.00014885207
0.00012980471
0.00014744357
tri
tri
Data group: Digital terrain attribute
Values
1.1272735844
0.93454488516
0.86032681167
1.1590157191
0.72257231921
ussslp
ussslp
Data group: Digital terrain attribute
Values
0.10552148071
0.19611483316
0.19926684022
0.23221911848
0.21693751911
geomorph
geomorph
Data group: Digital terrain attribute
Values
Depression
Spur
Slope
Hollow
Ridge
geomorph_ID
geomorph_ID
Data group: Digital terrain attribute
Values
3
2
6
5
10