Recently, a river in Inner Mongolia that typically remains unfrozen year-round has frozen over due to reduced water flow caused by an upstream water diversion project, drawing public concern. Located in Hexigten Banner, Chifeng City, this stretch of the Xilamulun River tributary usually stays liquid through winter thanks to geothermal heat or underground hot spring inputs, earning it the nickname ‘non-freezing river.’ However, this winter, residents observed extensive ice cover—unlike any previous years.Initial investigations suggest the freezing may be linked to a newly constructed upstream water diversion structure, which significantly decreased downstream flow and reduced water mobility, thereby diminishing its natural thermal retention capacity and allowing rapid freezing under low temperatures. Following media reports, local authorities swiftly intervened, dispatching teams from water resources and environmental protection departments for on-site inspections. The related project has been temporarily halted pending ecological impact assessments. Officials stated they will scientifically evaluate the long-term hydrological effects and adjust engineering plans if necessary to safeguard the river’s ecological integrity.Experts emphasize that non-freezing rivers are not only natural wonders but also vital components of regional ecosystems. Human interventions in water systems must undergo rigorous evaluation to avoid irreversible damage to local microclimates, wildlife habitats, and scenic resources. Authorities are now enhancing monitoring efforts and plan to commission third-party environmental impact reviews.
近日，内蒙古一条常年不冻的河流因上游截流工程导致水流减少，出现罕见结冰现象，引发公众关注。该河段位于赤峰市克什克腾旗，属于西拉木伦河支流，因地热或地下温泉补给，冬季通常保持流动状态，被称为‘不冻河’。然而，今年入冬以来，当地居民发现河面大面积结冰，与往年景象大相径庭。据初步调查，问题可能源于上游新建的水利截流设施，导致下游水量锐减，水体流动性下降，失去原有保温能力，从而在低温下迅速冻结。事件曝光后，当地政府迅速介入，组织水利、环保等部门开展实地核查，并暂停相关工程运行以评估生态影响。官方表示将科学研判截流对水文环境的长期影响，必要时调整工程方案，确保河流生态功能不受破坏。专家指出，不冻河不仅是自然奇观，也是区域生态系统的重要组成部分。人为干预水系需谨慎评估，避免对局部气候、生物栖息地及景观资源造成不可逆损害。目前，相关部门正加强监测，并计划引入第三方机构进行环境影响后评估。
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