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水能资源是客观存在。一定范围内的水能资源数量在客观上是基本不变的。但因人们对水能资源的全貌有一个认识过程,在这个过程中人们所掌握的水能资源数量是不断变化的。这种变化只反映人们的认识程度,而不是水能资源本身。四川省面积宽广,河流众多,径流丰沛,落差巨大,水能资源极其丰富,勘查工作量大,特别是西部地区勘查工作难度很大。对于四川水能资源,从本世纪30年代到80年代,人们经历了由零星到局部、再由局部到比较全面地认识过程,所获得的资源数量在不断地变化。今后,随着人们技术手段的提高和认识程度的加深,这种变化还会继续出现。
Hydropower resources is an objective reality. The amount of hydropower resources within a certain range is objectively basically unchanged. However, people have an understanding of the whole picture of hydropower resources, and the amount of hydropower resources that people have in the process is constantly changing. This change reflects only people’s awareness, not hydropower resources themselves. Sichuan Province has a large area, numerous rivers, abundant runoff, huge drops, extremely rich water resources, and a large amount of exploration work. In particular, the exploration work in the western region is very difficult. For Sichuan hydropower resources, from the 1930s to the 1980s, people went through a process of sporadicity to partiality, and then from local to more comprehensive understanding of the process, and the amount of resources they obtained was constantly changing. In the future, as people improve their technical means and awareness, such changes will continue to occur.