[Explanation] The Jinsha River, which runs through the three provinces of Sichuan, Tibet, and Yunnan, is the upper reaches of the Yangtze River.

According to the "14th Five-Year Plan", the clean energy base on the upper reaches of the Jinsha River is one of the nine clean energy bases that China will focus on in the next five years.

It is located in a snow-covered plateau, and most areas are over 4000 meters above sea level. It is also an important ecological safety barrier.

Recently, the reporter visited the construction sites of the cascade power stations in the upper reaches of the Jinsha River in the Sichuan-Tibet section of Yebatan, Rawa, Batang, and Suwalong and learned that ecological environmental protection has become the top priority in local construction.

　　The Batang Hydropower Station with an installed capacity of 750,000 kilowatts is located at the confluence of the Jinsha River and the Bachu River. It will be closed in 2020. The mighty Jinsha River spouts from the diversion tunnel, which is very spectacular.

A sandbar located at the mouth of the Bachu River not far downstream has always been a spawning ground for fish in the upper reaches of the Jinsha River.

The relevant person in charge told the reporter that in order to protect the fish spawning grounds at the Bachu River estuary, the entire project adjusted the location of the diversion tunnel and the outlet of the spillway tunnel, abandoned the natural sand and gravel yard, modified the design plan, and increased the project investment by about 200 million yuan.

　　[Concurrent] Tian Yinghui, Deputy Chief Engineer of Batang (Lawa) Branch of Huadian Jinshang

　　In order to ensure fish migration, we used a one-kilometer section of a tributary of the Jinsha River and built a tunnel next to the power station to build a fishway to allow the fish to migrate back to the reservoir area upstream of the Batang power station.

(In the future) A tunnel is built in the mountain and a fish lifter is installed to collect the fish and transport the fish to the upper reaches.

　　[Explanation] In addition to the construction of fish passing facilities, during the construction of the Sichuan-Tibet section of the cascade power station in the upper reaches of the Jinsha River, a fish breeding station was also built to expand the fish population of the Jinsha River through release.

Technicians are feeding the fish fry at the Yebatan Hydropower Station's fish breeding station in Gaiyu Township, Baiyu County, Ganzi Prefecture.

These densely packed fry, only 2 cm long, will eventually be released into the Jinsha River after cultivation and wild domestication.

　　[Concurrent] Du Guangyuan, Director of Safety and Environmental Protection Department of Huadian Jinshangye Batan Branch

　　The first is the domestication of the broodstock. After survival, spawning and hatching will start. The next step is the cultivation and domestication of the fry at the fry stage. After reaching the release stage, it must go through the adaptation process in the early stage of wild domestication. Start to release work.

　　[Explanation] The reporter learned that as of August this year, the cascade power stations in the Sichuan-Tibet section of the upper Jinsha River had accumulatively proliferated and released 2.1 million fish.

In the context of the comprehensive ban on fishing in the Yangtze River, these proliferation and release of fry will become an important force in the ecological restoration of the Yangtze River.

　　The upper left bank of the dam site of Suwalong Hydropower Station is close to Sichuan Zhubalong Nature Reserve. Therefore, they set up a wildlife monitoring station with the local government to understand the impact of project construction on wildlife, and provide scientific basis for protection measures, completion acceptance, etc. .

　　[Concurrent] Lu Bo, Deputy Director of Safety and Environmental Protection Department of Huadian Jinshang Suwalong Branch

　　Together with the local government, a wildlife observation point has been set up, and salt licking and drinking points have been set up for the small-clawed otters and the dwarf rock sheep to monitor the impact on these two wild animals during the construction process at any time.

　　[Explanation] During the construction of the cascade power station in the Sichuan-Tibet section of the upper reaches of the Jinsha River, the builders adapted measures to local conditions and took materials from the site. By efficiently utilizing side slope remnants and excavation waste, the opening of new stock yards and new slag yards were greatly reduced. Investment.

　　[Concurrent] Luo Wenjun, Director of Engineering Department of Huadian Jinshang Batang (Rawa) Branch

　　In the construction process, the actual method adopted is to use the excavated materials from the slope in situ, and then use it for dam materials, aggregates, and wool materials. Benefits of environmental protection.

　　Reporting by reporter Lv Yang from Ganzi, Sichuan

Editor in charge: [Wang Kai]