云南香格里拉地区森林优势树种决策融合分类

方攀飞,王雷光,徐伟恒,欧光龙,代沁伶,李若楠

Decision Fusion Classification of Forest Dominant Tree Species in Shangri-La Area of Yunnan Province

Panfei Fang,Leiguang Wang,Weiheng Xu,Guanglong Ou,Qinling Dai,Ruonan Li

表3 用于优势树种分类的特征

Table 3 Features used for dominant tree species classification

	特征	描述
光谱特征	Bands	Blue, Green, Red, Red_Edge1, Red_Edge2, Red_Edge3, NIR, Red_Edge4, SWIR_1, SWIR_2
	TVI	$0.5 \times (120 \times (ρ_{R e d E d g e - 1} - ρ_{G r e e n}) - (200 \times (ρ_{R e d} - ρ_{G r e e n})))$
	MTCI	$(ρ_{R e d E d g e - 2} - ρ_{R e d E d g e - 1}) / (ρ_{R e d E d g e - 1} - ρ_{N I R})$
	NBR	$(ρ_{N I R} - ρ_{S W I R - 2}) / (ρ_{N I R} + ρ_{S W I R - 2})$
	IRECI	$(ρ_{R e d E d g e - 3} - ρ_{R e d}) / (ρ_{R e d E d g e - 1} / ρ_{R e d E d g e - 2})$
	MCARI2	$((ρ_{R e d E d g e - 2} - ρ_{R e d E d g e - 1}) - 0.2 \times (ρ_{R e d E d g e - 2} - ρ_{G r e e n})) \times (ρ_{R e d E d g e - 2} / ρ_{R e d E d g e - 1})$
	LSWI	$(ρ_{N I R} - ρ_{S W I R - 1}) / (ρ_{N I R} + ρ_{S W I R - 1})$
	NDRE	$(ρ_{N I R} - ρ_{R e d E d g e - 1}) / (ρ_{N I R} + ρ_{R e d E d g e - 1})$
	Chl NDI	$(ρ_{R e d E d g e - 2} - ρ_{R e d E d g e - 1}) / (ρ_{R e d E d g e - 2} + ρ_{R e d E d g e - 1})$
	REP	$705 + 35 \times (0.5 \times (ρ_{R e d} + ρ_{R e d E d g e - 3}) - ρ_{R e d E d g e - 1}) / (ρ_{R e d E d g e - 2} - ρ_{R e d E d g e - 1})$
	NDVI	$(ρ_{N I R} - ρ_{R E D}) / (ρ_{N I R} + ρ_{R E D})$
	EVI	$2.5 \times (ρ_{N I R} - ρ_{R e d}) / (ρ_{N I R} + 6 \times ρ_{R e d} - 7.5 \times ρ_{B l u e} + 1)$
	MSR	$(ρ_{N I R} / ρ_{R e d E d g e - 1} - 1) / \sqrt[]{(\frac{ρ_{N I R}}{ρ_{R e d E d g e - 1}}) + 1}$
	RRI2	$ρ_{R e d E d g e - 1} / ρ_{R e d}$
	DIFTVI	$T V I_{S P R} - T V I_{A U T}$ 春季的TVI减去秋季的TVI
	DIFNDRE	$N D R E_{S P R} - N D R E_{A U T}$ 春季的NDRE减去秋季的NDRE
	DIFNDVI	$N D V I_{S P R} - N D V I_{A U T}$ 春季的NDVI减去秋季的NDVI
	TCGRE	Tasseled Cap Greenness
	TCWET	Tasseled Cap Wetness
纹理特征	SAVG	$S u m a v e r a g e = \frac{1}{2} \sum_{i = 1}^{m} \sum_{j = 1}^{n} (i \times G L C M (i, j) + j \times G L C M (i, j))$
	DIS	$D i s s m i l a r i t y = \sum_{i = 1}^{m} \sum_{j = 1}^{n} \|i - j\| \times G L C M (i, j)$
	VAR	$V a r i a n c e = \sum_{i = 1}^{m} \sum_{j = 1}^{n} {(j - μ_{j})}^{2} \times G L C M (i, j)$
	CON	$C o n t r a s t = \sum_{i = 1}^{m} \sum_{j = 1}^{n} {(i - j)}^{2} \times G L C M (i, j)$
	CORR	$C o r r e l a t i o n = \sum_{i = 1}^{m} \sum_{i = 1}^{n} \frac{\{i \times j\} G L C M (i, j) - \{μ_{x} \times μ_{y}\}}{σ_{x} \times σ_{y}}$
地形特征	Elevation
	Slope
	Aspect