据四川观察7月15日报道，近日，网络流传“九寨沟湖水依靠颜料染色才呈现蓝色”的不实视频，误导不少游客，损害景区形象。
The Jiuzhaigou Scenic Area has dismissed a viral video claiming that its famous turquoise lakes are artificially colored, calling the video a fabrication. In a statement released on Wednesday, the scenic area said the video misleads the public and harms its reputation.
为此，九寨沟管理局就此发布严正辟谣声明，澄清视频拍摄地点并非九寨沟，网传染色说法纯属虚假谣言。
作为世界自然遗产、世界生物圈保护区，九寨沟五彩湖水是天然地质光学奇观，有完整科学依据支撑，全程不存在任何人工颜料干预。
As a UNESCO World Natural Heritage site and World Biosphere Reserve, the park's iconic blue-green waters are the result of natural geological and optical processes, rather than any artificial coloring or human intervention.
中国科学院成都生物研究所研究员孙庚对此作出专业科普，九寨沟湖水独有的蓝绿色，由物理、化学、生物三重因素共同造就。
To explain the science behind the phenomenon, Sun Geng, a researcher at the Chengdu Institute of Biology under the Chinese Academy of Sciences, said the lakes' striking colors are produced by a combination of physical, chemical and biological factors.
从物理层面看，九寨沟高山湖泊水质洁净，水中悬浮物、浮游生物含量极低，水体透明度极高。太阳光包含红、橙、黄、绿、蓝、靛等光线。红、橙、黄等长波长光易被水体吸收，蓝、紫等短波长光线更容易被散射，湖水因此呈现出鲜明蓝调。
From a physical perspective, the lakes are fed by exceptionally pure water from high-altitude sources, containing very few suspended particles or plankton. The water's remarkable clarity allows sunlight, which contains the full spectrum of visible light, to penetrate deeply. Longer wavelengths such as red and orange are absorbed, while shorter wavelengths such as blue and violet are scattered, making the water appear blue.
九寨沟 资料图 图源：中国日报网
从化学层面看，流域水体富含钙、镁、碳酸氢根等离子，相互结合形成0.1至0.45微米的钙华微小颗粒，这类颗粒能够高效散射蓝绿光，进一步强化湖水艳丽色彩。
同时，湖内藻类等水生生物会对光线进行二次反射，丰富水体色彩层次。
Chemically, the water is rich in calcium, magnesium, and bicarbonate ions, which form microscopic travertine particles that further scatter blue-green light and enhance the lakes' vivid colors.
Biological factors also contribute. Algae and other aquatic organisms reflect light in different ways, adding depth and subtle variation to the water's appearance.
除此之外，湖泊水深、四季更迭、阴晴天气、观赏视角不同，都会让湖水呈现出深浅不一的渐变色彩，造就九寨沟变幻灵动的水景特色。
Water depth, seasonal changes, weather conditions, and even the viewing angle all influence how the colors are perceived, creating the lakes' ever-changing shades of blue and green.
九寨沟管理局提醒广大网友，不要随意编造、转发虚假谣言，恶意诋毁世界自然遗产声誉，面对网络短视频信息注意辨别真伪，不信谣、不传谣，共同守护九寨沟自然遗产口碑与网络清朗环境。如需了解景区自然景观相关知识，可关注景区官方发布的权威科普内容。
来源：九寨沟管理局 四川观察 澎湃新闻
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