The amount of water quantity scheduling of the river Jidai is effective to ensure that the water supply and ecological safety of Taihu Lake Basin are effectively guaranteed

Since the flood in this year, due to the influence of "Kongmei" and continuous high temperature and rain, the water level in Taihu Lake continued to decline, which seriously threatened the water resources, water ecology, and water environment of Taihu Lake Basin. On July 16, the water level in Taihu fell to 3.16 meters, which was 0.40 meters lower than the same period of the year, the lowest in the same period in the past two decades. According to the 5 -August of the Taihu Lake Basin, the precipitation will still have a small meteorological forecast, and the Taihu Basin Administration (hereinafter referred to as Taihu Bureau) of the Ministry of Water Resources and forecast forecasts at the end of August may be about 3.00 to 3.05 meters. Taihu Lake Land Algae Water Huahua's occurrence period, the risks of the emotion of Taihu Lake increased. In order to ensure water supply and ecological safety in the Taihu Lake Basin, at the request of the Jiangsu Provincial People's Government, the Ministry of Water Resources launched the Summer Yitai water volume scheduling in the summer.

In accordance with Li Guoying's deployment requirements of the Deputy Commander of the National Defense and Minister of Water Resources, Taihu Bureau went all out to do a good job of scheduling water dispatching. The first is to strengthen the deployment of business research and judgment. Pay close attention to all aspects of the scheduling chain, roll up the meeting daily to investigate and judge, conduct special investigations and hold symposiums, listen to the needs and suggestions of relevant parties extensively, and send 11 working groups to guide relevant units to ensure flood prevention safety. Do a good job of water adjustment. The second is to effectively strengthen the "four pre -pre -pre -" measures. Crypting Taihu Lake Candal Candida is short -term prediction and forecasting, with a total of 97 periods of the prediction results; 89 groups and 472 people in the emergency monitoring of water quality and water quality; rolling previewing the changes in the movement of the Yangtze River along the Wangyu River, as well as different rainfall forecasting, tide position and scheduling. The water level of the river network; dynamically adjust the scheduling schedule of the water volume of the river, and revise and improve the emergency plan. The third is scientifically dispatching water conservancy projects. Before entering the lake, the relevant projects along the line of water and the water to speed up the water of the Yangtze River to look at Yuhe water; after the water quality meets the requirements of Taihu Lake, the water conservancy hub and the Changshu water conservancy hub of Wangting Water Conservancy will be accurately controlled. Control operation supervision to ensure that the water quality of Wangyu River enters Taihu Lake reaches Class II to III. At present, this time the amount of water in the river Ji Tai has accumulated a total of 608 million cubic meters of water into the Taihu Lake Basin through the Changshu Water Conservancy Hub, of which 319 million cubic meters of Taihu Lake was used to divert water through the Wangting Water Conservancy Hub to stabilize Taihu Waterfall and promote the flow of water in Taihu Lake; Water supply to the cross -strait water network by 289 million through Wangyu River to improve the regional water environment. In addition, 226 million cubic meters of water were supplying water through the Tai Pu River downstream Zhejiang, Shanghai and other places, and 689 million cubic meters of water supply to the surrounding area through other ports around Taihu. At 8 o'clock on August 31, Taihu's water position was 3.12 meters, and it raised 0.07 to 0.12 meters without water.

Through the implementation of the scheduling of the water volume of Jiangji, the supply of water resources in the basin was effectively increased, the rapid decline in the water level of Taihu Lake, and the meetings of living, production, shipping, water ecology and other places on both sides of the Wangyu River, around Taihu River, and the lower reaches of Tai Pu River. Essence The average concentration of the total phosphorus in Taihu Lake is only half of the average concentration of the total phosphorus of the lake and rivers in the Lake Canal, Chengdong Port, Yincun Port, etc. in the west of the lake. In the phenomenon of large -scale algae water, the main sections along the Tai Pu River's dry stream of the main section of the main water quality index index, ammonia nitrogen, and total phosphorus all reached Class I to III. positive effects.

According to predictions, Typhoon Xuanlan Nuo No. 11 this year may bring a certain impact on the heavy rainfall on the Taihu Lake. In September, the rainfall of the Taihu Basin was close to the year. In 3.08 to 3.18 meters, it is still significantly lower than the same period (3.38 meters) in the same year, and the situation in the later period of water supply and water ecological safety is still severe. The Ministry of Water Conservancy will continue to make the following work in overall planning flood prevention, water supply, water ecology, and water environment. The first is to make every effort to ensure the safety of flood prevention in the basin. Continue to pay attention to the development of the typhoon "Xuan Lannuo", judge the path of typhoon in advance, the scope of influence, and make good preparations for preventing typhoon storms. If there is a heavy rainfall process, it will immediately suspend Jiang Jita, and then switch to drainage to ensure the safety of the watershed. The second is to continue to grasp the scheduling of water volume. In response to the unfavorable situation of Taihu's water level, it may continue to organize the scheduling of water resources, water ecology, and water environment safety of the river in the river to promote the amount of water in the river.

Source ｜ Department of Water Resources Disaster Disaster Defense Department

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