遥感如何发现热带森林的“隐蔽毁林”？
How does remote sensing reveal 'hidden' tropical deforestation?
除肉眼可见的皆伐外，高分辨率与时间序列影像能识别零星采伐、林冠退化与道路侵入等缓慢变化，结合雷达可穿透云层，捕捉传统统计遗漏的小规模破坏。
Beyond clear-cuts, high-resolution time-series and radar see through clouds to catch sporadic logging, canopy degradation and road incursion—slow changes missed by conventional statistics.
难度 专业 · 适合 小学高段(9-12)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Global Forest Watch
Global Forest Watch
#遥感 #隐蔽毁林 #雷达
卫星“日光诱导叶绿素荧光（SIF）”能告诉我们什么？
What does satellite solar-induced chlorophyll fluorescence (SIF) tell us?
SIF 是植物光合过程中逸出的微弱红光，直接反映真实光合作用强度，比叶面积指数更早指示干旱、物候与碳吸收的变化。
SIF is faint red light leaking from photosynthesis, directly tracking actual photosynthetic activity—earlier than leaf-area indexes at signaling drought, phenology and carbon uptake changes.
难度 专业 · 适合 小学高段(9-12)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#叶绿素荧光 #光合 #碳吸收
合成孔径雷达（SAR）为何能“全天候”监测地表形变（如地面沉降）？
Why can SAR monitor surface deformation (e.g., subsidence) all-weather?
SAR主动发射微波、接收回波，不受云雨黑夜影响；用干涉（InSAR）比对两时相相位差，可毫米级测出地面升降，广泛用于沉降、滑坡、冰川流速监测。
SAR actively emits microwaves and receives echoes, unaffected by clouds, rain or night; interferometry (InSAR) compares phase between dates to measure uplift/subsidence at millimeter scale—used for subsidence, landslides and glacier velocity.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Massonnet 与 Feigl 1998 年发表于 Reviews of Geophysics 的综述:雷达干涉测量及其在地表变化探测中的应用
Massonnet, D. & Feigl, K.L., Reviews of Geophysics, 1998: Radar interferometry and its application to changes in the Earth's surface
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1029/97rg03139：Radar interferometry and i
#遥感 #SAR #形变
卫星如何用“大气柱 CO2 浓度”来追踪排放源？
How do satellites track emission sources via 'column CO2 concentration'?
如 OCO-2、GOSAT 等用光谱反演大气柱平均 CO2，叠加风场可定位羽流并估算电厂、城市等点源的排放量，弥补地面监测的空白。
Satellites like OCO-2 and GOSAT retrieve column-average CO2 from spectra; with wind data they pinpoint plumes and estimate emissions from power plants or cities, filling ground-monitoring gaps.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#卫星遥感 #CO2柱 #排放源
卫星遥感如何监测全球森林变化？
How does satellite remote sensing monitor global forest change?
光学与雷达卫星定期成像，通过植被指数（如NDVI）、雷达穿透云层，结合AI比对前后影像，识别砍伐、恢复与火灾范围，实现近实时全球覆盖。
Optical and radar satellites image regularly; vegetation indices (e.g., NDVI) and cloud-penetrating radar, combined with AI change detection, identify deforestation, regrowth and fires at near-real-time global coverage.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Global Forest Watch
Global Forest Watch
#遥感 #森林 #监测
卫星怎么“看到”森林被砍？
How can satellites 'see' forests being cut?
卫星拍下大地的颜色，森林是深绿；被砍后变成土黄，电脑一比前后照片就知道哪里变了。
Satellites photograph Earth's colors; forest is deep green, and after cutting it turns earthy yellow—computers compare before/after photos to spot changes.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Global Forest Watch
Global Forest Watch
#遥感 #森林 #科普