Table 1. Data on the development of the degree of landscape fragmentation in Baden-Württemberg. The results include the effective mesh size (meff), the number of patches included in the calculation, the size of the largest remaining unfragmented patch, and the number of patches >100 km² and >50 km² (for comparison with other analyses; the last column “patches >50 km²” includes the patches >100 km²; e.m.r. = excluding municipal roads; i.m.r. = including municipal roads). Noise bands were excluded (upper half of the table) and included (lower half; for the years 1966, 1977, and 1989; data on traffic volume were only available for these three points in time), respectively. All values are based on the cutting-out (CUT) procedure.
| | | |
Noise bands
/ Municipal
roads
|
Year
|
meff
|
Number of patches
(>100 m²)
|
Size of the largest patch
|
Patches >100 km² number (area / % of the state
area)
|
Patches >50 km²
number (area / % of the state area)
|
| |
without noise bands
|
|
|
|
|
|
e. m. r.
|
2004
|
19.58 km²
|
21 994
|
160.10 km²
|
8 (1106 km²/3.1%)
|
39 (3138 km²/8.8%)
|
|
|
1998
|
20.24 km²
|
13 945
|
161.00 km²
|
8 (1109 km²/3.1%)
|
40 (3209 km²/9.0%)
|
|
|
1989
|
20.51 km²
|
15 469
|
161.03 km²
|
8 (1110 km²/3.1%)
|
41 (3302 km²/9.2%)
|
|
|
1977
|
22.14 km²
|
15 079
|
163.40 km²
|
8 (1115 km²/3.1%)
|
49 (3846 km²/10.8%)
|
|
|
1966
|
24.26 km²
|
14 352
|
163.54 km²
|
11 (1522 km²/4.3%)
|
54 (4343 km²/12.1%)
|
|
|
1930
|
31.47 km²
|
11 558
|
221.87 km²
|
17 (2369 km²/6.6%)
|
83 (6703 km²/18.7%)
|
|
i. m. r.
|
2004
|
13.01 km²
|
40 923
|
142.30 km²
|
6 (764 km²/2.1%)
|
22 (1867 km²/5.2%)
|
|
|
1998
|
13.66 km²
|
30 835
|
146.70 km²
|
6 (752 km²/2.1%)
|
22 (1880 km²/5.3%)
|
|
|
1989
|
13.99 km²
|
34 096
|
146.83 km²
|
6 (753 km²/2.1%)
|
23 (1941 km²/5.4%)
|
|
|
1977
|
17.80 km²
|
33 664
|
161.39 km²
|
7 (973 km²/2.7%)
|
36 (2875 km²/8.0%)
|
|
|
1966
|
19.46 km²
|
34 525
|
161.49 km²
|
7 (975 km²/2.7%)
|
39 (3068 km²/8.6%)
|
|
|
1930
|
22.92 km²
|
32 049
|
206.20 km²
|
11 (1497 km²/4.2%)
|
52 (4067 km²/11.8%)
|
with noise bands
|
|
|
|
|
|
e. m. r.
|
1989
|
19.40 km²
|
11 958
|
160.84 km²
|
8 (1104 km²/3.1%)
|
38 (3084 km²/8.6%)
|
|
|
1977
|
21.67 km²
|
12 820
|
163.24 km²
|
8 (1112 km²/3.1%)
|
48 (3779 km²/10.6%)
|
|
|
1966
|
24.04 km²
|
12 913
|
161.49 km²
|
11 (1522 km²/4.3%)
|
54 (4340 km²/12.1%)
|
|
i. m. r.
|
1989
|
13.34 km²
|
27 575
|
146.25 km²
|
6 (751 km²/2.1%)
|
22 (1871 km²/5.2%)
|
|
|
1977
|
17.45 km²
|
29 682
|
161.22 km²
|
7 (972 km²/2.7%)
|
35 (2816 km²/7.9%)
|
|
|
1966
|
19.35 km²
|
31 981
|
161.49 km²
|
7 (975 km²/2.7%)
|
39 (3067 km²/8.6%)
|
| | |
|