基于 <strong><i>RSEI</i></strong> 的黄河上游流域生态环境质量变化分析

基于 RSEI 的黄河上游流域生态环境质量变化分析

崔亚婷, 李嬛, 郑龙啸, 吴孟泉

Study of ecological environmental quality changes in the upper Yellow River basin based on remote sensing ecological index

Yating Cui, Huan Li, Longxiao Zheng, Mengquan Wu

表1 指标计算方法

Table 1 Calculation methods of indicators

指标	计算方法
NDVI	$N D V I = (B_{n i r} - B_{r e d}) / (B_{n i r} + B_{r e d})$
WET	$W E T_{T M} = 0.0315 B_{b l u e} + 0.2021 B_{g r e e n} + 0.3102 B_{r e d} + 0.1594 B_{n i r} - 0.6806 B_{s w i r 1} - 0.6109 B_{s w i r 2}$
WET	$W E T_{O L I} = 0.1511 B_{b l u e} + 0.1973 B_{g r e e n} + 0.3283 B_{r e d} + 0.3407 B_{n i r} - 0.7117 B_{s w i r 1} - 0.4559 B_{s w i r 2}$
NDBSI	$I B I = \frac{\frac{2 B_{s w i r 1}}{B_{s w i r 1} + B_{n i r}} - (\frac{B_{n i r}}{B_{n i r} + B_{r e d}} + \frac{B_{g r e e n}}{B_{g r e e n} + B_{s w i r 1}})}{\frac{2 B_{s w i r 1}}{B_{s w i r 1} + B_{n i r}} + (\frac{B_{n i r}}{B_{n i r} + B_{r e d}} + \frac{B_{g r e e n}}{B_{g r e e n} + B_{s w i r 1}})}$
	$S I = \frac{(B_{s w i r 1} + B_{r e d}) - (B_{n i r} + B_{b l u e})}{(B_{s w i r 1} + B_{r e d}) + (B_{n i r} + B_{b l u e})}$
	$N D B S I = (S I + I B I) / 2$
LST	$L S T = γ \times [\frac{1}{ε} \times (ψ_{1} \times L_{s e n} + ψ_{2}) + ψ_{3}] + δ$