Chin J Plant Ecol ›› 2008, Vol. 32 ›› Issue (2): 328-335.DOI: 10.3773/j.issn.1005-264x.2008.02.009
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Khajeddin SJ1(), Akbari M1, Karimzadeh HR1, Eghbal MK2
Received:
2006-12-20
Accepted:
2007-09-26
Online:
2008-12-20
Published:
2008-03-30
Khajeddin SJ, Akbari M, Karimzadeh HR, Eghbal MK. DETECTING DESERTIFICATION PROCESSES USING TM AND ETM+ DATA, NORTH OF ISFAHAN, IRAN[J]. Chin J Plant Ecol, 2008, 32(2): 328-335.
No. | Land use classes | Symbol | TM (1990)* | ETM+ (2001)* | Change* | |
---|---|---|---|---|---|---|
1 | Agriculture | Agr | 11 488 | 10 254 | -1 234 | -10.74 |
2 | Rangeland 2 | R2 | 9 892 | 6 139 | -3 753 | -37.94 |
3 | Rangeland 3 | R3 | 43 378 | 22 966 | -20 412 | -47.06 |
4 | Degraded | Deg | 17 958 | 40 907 | 22 949 | 127.79 |
5 | Urban | Urb | 2 035 | 4 370 | 2 335 | 114.74 |
6 | Debris | Deb | 317 | 432 | 115 | 36.27 |
7 | Surface erosion | G | 1 024 | 1 024 | - | - |
8 | Highland | H | 337 | 337 | - | - |
9 | Kooh-e Khan | I | 621 | 621 | - | - |
Total area | 87 050 | 87 050 | - | - |
No. | Land use classes | Symbol | TM (1990)* | ETM+ (2001)* | Change* | |
---|---|---|---|---|---|---|
1 | Agriculture | Agr | 11 488 | 10 254 | -1 234 | -10.74 |
2 | Rangeland 2 | R2 | 9 892 | 6 139 | -3 753 | -37.94 |
3 | Rangeland 3 | R3 | 43 378 | 22 966 | -20 412 | -47.06 |
4 | Degraded | Deg | 17 958 | 40 907 | 22 949 | 127.79 |
5 | Urban | Urb | 2 035 | 4 370 | 2 335 | 114.74 |
6 | Debris | Deb | 317 | 432 | 115 | 36.27 |
7 | Surface erosion | G | 1 024 | 1 024 | - | - |
8 | Highland | H | 337 | 337 | - | - |
9 | Kooh-e Khan | I | 621 | 621 | - | - |
Total area | 87 050 | 87 050 | - | - |
No. | Land use classes | Accuracy | TM | ETM+ | Error | TM | ETM+ |
---|---|---|---|---|---|---|---|
1 | Agriculture | Producer | 30.6 | 74.9 | Omission | R3, U, Deg | R2, R3 |
Users | 57.9 | 99.8 | Commission | Deg, U | - | ||
2 | Rangeland 2 | Producer | 47.5 | 98.7 | Omission | - | - |
Users | 46.2 | 81.6 | Commission | R3 | Agr | ||
3 | Rangeland 3 | Producer | 70.6 | 96.4 | Omission | R2, Deg | - |
Users | 31.6 | 93.5 | Commission | Deg, U, Agr | - | ||
4 | Degraded | Producer | 46.2 | 90.2 | Omission | R3, Agr | - |
Users | 65.4 | 94.9 | Commission | G, R3 | - | ||
5 | Urban | Producer | 49.1 | 93.7 | Omission | R3 | - |
Users | 84.2 | 99.8 | Commission | Agr | - | ||
6 | Debris | Producer | 77 | 100 | Omission | R3 | - |
Users | 90.7 | 100 | Commission | - | - | ||
7 | Surface erosion | Producer | 87.3 | 100 | Omission | Deg | - |
Users | 100 | 96.3 | Commission | - | - | ||
8 | Highland | Producer | 100 | 87.2 | Omission | - | R2 |
Users | 100 | 97.1 | Commission | - | - | ||
9 | Kooh-e Khan | Producer | 100 | 94.9 | Omission | - | - |
Users | 100 | 97.1 | Commission | - | - | ||
Overall | 60.4 | 91.9 | |||||
KHAT | 52.6 | 89.8 |
No. | Land use classes | Accuracy | TM | ETM+ | Error | TM | ETM+ |
---|---|---|---|---|---|---|---|
1 | Agriculture | Producer | 30.6 | 74.9 | Omission | R3, U, Deg | R2, R3 |
Users | 57.9 | 99.8 | Commission | Deg, U | - | ||
2 | Rangeland 2 | Producer | 47.5 | 98.7 | Omission | - | - |
Users | 46.2 | 81.6 | Commission | R3 | Agr | ||
3 | Rangeland 3 | Producer | 70.6 | 96.4 | Omission | R2, Deg | - |
Users | 31.6 | 93.5 | Commission | Deg, U, Agr | - | ||
4 | Degraded | Producer | 46.2 | 90.2 | Omission | R3, Agr | - |
Users | 65.4 | 94.9 | Commission | G, R3 | - | ||
5 | Urban | Producer | 49.1 | 93.7 | Omission | R3 | - |
Users | 84.2 | 99.8 | Commission | Agr | - | ||
6 | Debris | Producer | 77 | 100 | Omission | R3 | - |
Users | 90.7 | 100 | Commission | - | - | ||
7 | Surface erosion | Producer | 87.3 | 100 | Omission | Deg | - |
Users | 100 | 96.3 | Commission | - | - | ||
8 | Highland | Producer | 100 | 87.2 | Omission | - | R2 |
Users | 100 | 97.1 | Commission | - | - | ||
9 | Kooh-e Khan | Producer | 100 | 94.9 | Omission | - | - |
Users | 100 | 97.1 | Commission | - | - | ||
Overall | 60.4 | 91.9 | |||||
KHAT | 52.6 | 89.8 |
Type of changes | Fuzzy analysis | Time series analysis | ||||
---|---|---|---|---|---|---|
(%) | (hm2) | (%) | (hm2) | |||
Unchanged areas | 47% | 41 244 | 45% | 38 817 | ||
Changed areas | 53% | 45 806 | 55% | 48 233 | ||
Total | 100% | 87 050 | 100% | 87 050 |
Type of changes | Fuzzy analysis | Time series analysis | ||||
---|---|---|---|---|---|---|
(%) | (hm2) | (%) | (hm2) | |||
Unchanged areas | 47% | 41 244 | 45% | 38 817 | ||
Changed areas | 53% | 45 806 | 55% | 48 233 | ||
Total | 100% | 87 050 | 100% | 87 050 |
Agri | R2 | R3 | Deg | Urb | Deb | G | H | I | Total | |
---|---|---|---|---|---|---|---|---|---|---|
Agri | 3 943 | 21 | 5 236 | 782 | 211 | 61 | - | - | - | 10 254 |
R2 | 29 | 3 791 | 2 053 | 192 | 71 | 3 | - | - | - | 6 139 |
R3 | 1 472 | 4 742 | 14 034 | 2 603 | 100 | 15 | - | - | - | 22 966 |
Deg | 5 807 | 1 294 | 19 593 | 13 726 | 378 | 109 | - | - | - | 40 907 |
Urb | 232 | 40 | 2 195 | 578 | 1 268 | 57 | - | - | - | 4 370 |
Deb | 7 | 3 | 267 | 75 | 7 | 73 | - | - | - | 432 |
G | - | - | - | - | - | - | 1 024 | - | - | 1 024 |
H | - | - | - | - | - | - | - | 337 | - | 337 |
I | - | - | - | - | - | - | - | - | 621 | 621 |
Total | 11 490 | 9 891 | 43 378 | 17 956 | 2 035 | 318 | 1 024 | 337 | 621 | 87 050 |
Agri | R2 | R3 | Deg | Urb | Deb | G | H | I | Total | |
---|---|---|---|---|---|---|---|---|---|---|
Agri | 3 943 | 21 | 5 236 | 782 | 211 | 61 | - | - | - | 10 254 |
R2 | 29 | 3 791 | 2 053 | 192 | 71 | 3 | - | - | - | 6 139 |
R3 | 1 472 | 4 742 | 14 034 | 2 603 | 100 | 15 | - | - | - | 22 966 |
Deg | 5 807 | 1 294 | 19 593 | 13 726 | 378 | 109 | - | - | - | 40 907 |
Urb | 232 | 40 | 2 195 | 578 | 1 268 | 57 | - | - | - | 4 370 |
Deb | 7 | 3 | 267 | 75 | 7 | 73 | - | - | - | 432 |
G | - | - | - | - | - | - | 1 024 | - | - | 1 024 |
H | - | - | - | - | - | - | - | 337 | - | 337 |
I | - | - | - | - | - | - | - | - | 621 | 621 |
Total | 11 490 | 9 891 | 43 378 | 17 956 | 2 035 | 318 | 1 024 | 337 | 621 | 87 050 |
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