Scientia Silvae Sinicae ›› 2022, Vol. 58 ›› Issue (9): 60-69.doi: 10.11707/j.1001-7488.20220906
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Wei Yue,Shiming Li*,Zengyuan Li,Qingwang Liu,Yong Pang,Lin Si
Received:
2021-08-20
Online:
2022-09-25
Published:
2023-01-18
Contact:
Shiming Li
CLC Number:
Wei Yue,Shiming Li,Zengyuan Li,Qingwang Liu,Yong Pang,Lin Si. Identification of Dominant Tree Species Based on Multi-Temporal Sentinel-2 Images and SNIC Segmentation Algorithm[J]. Scientia Silvae Sinicae, 2022, 58(9): 60-69.
Table 1
The time information of satellite images"
季节Season | 序号No. | 成像时间Acquisition date | 季节Season | 序号No. | 成像时间Acquisition date | |
春季Spring | 1 2 3 4 5 | 2019-04-15 2019-05-05 2019-05-10 2020-05-14 2019-05-25 | 秋季Autumn | 8 9 10 11 | 2019-09-22 2020-09-26 2019-10-07 2020-10-16 | |
夏季Summer | 6 7 | 2019-06-14 2020-08-02 | 冬季Winter | 12 | 2018-12-16 |
Table 2
Samples distribution by category"
类别Category | 训练样本集Training sample collection | 验证样本集Validation sample collection |
油松Pinus tabuliformis | 68 | 68 |
落叶松Larix gmelinii | 61 | 56 |
其他针叶Other coniferous | 15 | 17 |
白桦和山杨Betula platyphylla & Populus davidiana | 52 | 47 |
其他阔叶Other hardwood | 34 | 40 |
灌木和草地Shrubs and grass | 70 | 70 |
其他地类Other land-cover | 61 | 63 |
总数Total | 361 | 361 |
Table 3
Summary of features used for classification"
特征集合 Feature collection | 波段Band | 中心波长 Central wavelength (S2A/S2B)/nm | 带宽Band width (S2A/S2B)/nm |
波段反射率 Reflectance of each band | B2(Blue) | 497/492 | 98/98 |
B3(Green) | 560/559 | 45/46 | |
B4(Red) | 665/665 | 38/39 | |
B5(Rededge1) | 704/704 | 19/20 | |
B6(Rededge2) | 740/739 | 18/18 | |
B7(Rededge3) | 783/780 | 28/28 | |
B8(NIR) | 835/833 | 145/133 | |
B8A(NIRnarrow) | 865/864 | 33/32 | |
B11(SWIR1) | 1 614/1 610 | 143/141 | |
B12(SWIR2) | 2 202/2 186 | 242/238 | |
光谱指数 Spectral indices | 光谱指数Spectral index | 计算公式Formula | 参考文献Reference |
NDVI | ( | ||
NDTI | ( | ||
NDWI | ( | ||
NDVIre | ( | ||
NHI | ( | ||
SR_Bre1 | ( |
Table 4
Comparison of classification accuracy"
类别 Category | 春季时间序列 Time series of spring | 秋季时间序列 Time series of autumn | 多季节组合 Multi-season combination | |||||
生产者精度 Producer accuracy(%) | 用户精度 User accuracy(%) | 生产者精度 Producer accuracy(%) | 用户精度 User accuracy(%) | 生产者精度 Producer accuracy(%) | 用户精度 User accuracy(%) | |||
油松Pinus tabuliformis | 98.5 | 95.7 | 98.5 | 98.5 | 98.5 | 98.5 | ||
落叶松Larix gmelinii | 94.6 | 94.6 | 94.6 | 91.4 | 96.4 | 94.7 | ||
其他针叶Other coniferous | 82.4 | 100.0 | 94.1 | 100.0 | 100.0 | 100.0 | ||
白桦和山杨Betula platyphylla & Populus davidiana | 100.0 | 83.9 | 100.0 | 87.0 | 97.9 | 90.2 | ||
其他阔叶Other hardwood | 72.5 | 100.0 | 77.5 | 96.9 | 82.5 | 97.1 | ||
总体精度Overall Accuracy(%) | 94.5 | 95.0 | 95.8 | |||||
Kappa系数Kappa coefficient | 0.934 | 0.941 | 0.951 |
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