密云水库虽位于北京，但水库的汇水面积有三分之二在河北。从来水看，密云水库由潮河、白河两大流域汇流而 成，其中白河起源于河北省张家口市沽源县，再经赤城县、延庆区、怀柔区，流入密云水库；潮河发源于河北省 承德市丰宁满族自治县，再经滦平县、密云区，流入密云水库。 密云水库流域图。受访者供图 协同护水，不能再单打独斗。近年来，密云水库流域京冀"三区五县"上下联动，协同施策，护好"大水缸"。2025 年12月1日起，密云水库水源保护迎来重要时刻，《密云水库水源保护条例》正式施行，为护水、保水立下"硬规 矩"。 中国工程院原副院长、沈国舫院士指出，国家制定专门的行政法规以进一步提高密云水库水源保护工作规 范化、制度化水平，这将为保障首都水安全提供有力支撑。他认为，《密云水库水源保护条例》以国家行政法规 形式立法，覆盖北京、河北两地，"体现了严肃性，对北京、河北地方政府的要求更加严格，力度更大。" 马年春节已过，大地微暖，发源于河北的潮河、白河如两条碧绿丝带蜿蜒辗转，缓缓注入密云水库这个首都的"大 水缸"。由此再往西百余公里，官厅水库水面铺展辽阔，成群水鸟嬉戏栖息，鸟鸣不时划破长空。北京城往东看， 运河畔天蓝水清，市民亲水 ...

Group 1 - The implementation of the "Miyun Reservoir Water Source Protection Regulations" and the "National Park Law" marks significant progress in ecological civilization construction in China, providing a legal framework for environmental protection [1] - The "Miyun Reservoir Water Source Protection Regulations" is the first of its kind in the country, aimed at safeguarding the water source for Beijing, while the National Park Law represents the first specialized legislation for national parks, indicating a shift towards legal and standardized management [1] - The establishment of these laws enhances the legal support for ecological civilization, clarifying the boundaries of what can and cannot be done, thus providing a structured approach to environmental governance [1] Group 2 - The necessity for improved legal frameworks is highlighted by the challenges in ecological protection, which often stem from inadequate systems and enforcement, leading to a cycle of governance issues [2] - The regulations for the Miyun Reservoir emphasize collaborative responsibilities between Beijing and Hebei, addressing discrepancies in environmental policies and reducing regulatory gaps through mandatory cross-province cooperation [2] - Collaborative legislation in various regions, such as Jiangxi and Hunan, demonstrates the effectiveness of joint efforts in tackling pollution and environmental management, transforming fragmented governance into unified management [2] Group 3 - The role of legal systems extends to guiding sustainable development, where prioritizing ecological considerations does not preclude growth but rather fosters a higher quality of development [3] - The Long River Protection Law exemplifies this by facilitating the exit of polluting industries and promoting the establishment of green industrial parks, thus addressing pollution at its source [3] - Emphasizing preventive measures over punitive actions in ecological governance is crucial, as it encourages a shift from reactive to proactive environmental management [3]