Recently, the Ministry of Ecology and Environment announced the second batch of excellent cases of beautiful rivers and lakes, and Ziya River (Hongqiao section) in our city was selected.
Beautiful rivers and lakes are the concentrated embodiment and important carrier of Beautiful China in the field of water ecology and environment. In recent years, our city has continued to fight the battle of defending clear water, and rivers, bays, and wetlands have painted a picture of ecological water beauty. Beautiful rivers and lakes have dressed up the lives of citizens.
Along the Ziya River.
The picture shows a corner of the riverside park. Courtesy of Hongqiao District Ecology and Environment Bureau.
Ziya River (Hongqiao section).
The water ecological environment changes, and flowers, birds, fish, and insects come naturally
A few days ago, the reporter walked into the riverside park in Hongqiao District. In the square, there are people dancing, people playing musical instruments, and some children playing roller skating ......The park is built along the Ziya River, and on the other side of the river is Tianjin West Railway Station. Citizens sit on wooden boats of different shapes on the shore, enjoying the scenery on both sides of the river, leisurely and comfortable.
The Ziya River (Hongqiao section) has a total length of 625 kilometers, it joins the North Canal downstream of the Dahong Bridge and eventually flows into the Haihe River. The reporter walked all the way down the riverbank, there were several large reeds growing in the gurgling clear water, and the Tianjin West Railway Station on the other side of the river with round arches and radial louvers as the shape was hidden among the trees, forming a reflection in the water.
It is hard to imagine that this place turned out to be a major crux affecting the ecological environment of the Ziya River - the "fishing village" of the century-old Guojia vegetable garden. Uncle Liu is a native of the old Hongqiao District and a resident of the original "fishing village". He told reporters that this was originally a shantytown, the environment was dirty and messy, domestic sewage was directly discharged into the river, domestic garbage floated on the river, and there was a big red bridge riverside road market, "Then the environment can't be said, and people around here have a headache when they mention 'fishing villages'." ”
In order to improve the living conditions of the masses and the ecological environment of the Ziya River, Hongqiao District has implemented the overall relocation and ecological transformation project of the "fishing village", which has solved the problem of non-point source pollution such as direct sewage discharge from the riverbank.
According to the staff of the Hongqiao District Ecological Environment Bureau, after the relocation and transformation of the "fishing village", the district will build a green and ecological riverside park on the basis of the original site, and the design will fully integrate the concept of sponge city construction to ensure that there is no overflow of sewage and no initial rainwater into the river. A 100,000-square-meter ecological area has been built along the Ziya River with the wetland landscape as the core, and nearly 30,000 square meters of waterlogging-tolerant plants and more than 1,000 drought-tolerant plants have been planted. The district also implements comprehensive water environment management, organizes and carries out surveys of river outlets, investigates 89 estuary gates, and promotes the blocking of 41 gatesInvest about 24 million yuan to renovate 408 rain and sewage mixing points upstream of 25 rain and sewage gatesComprehensively investigate and rectify the problems of road occupation and indiscriminate dumping within the Ziya River, strengthen the control of the river shoreline, and reduce pollution sources. "We also give full play to the synergy of the Bishui Office and the River Chief's Office to carry out law enforcement inspections, water quality monitoring, ecological water replenishment, and river cleaning, regularly conduct water quality assessment and ranking of each subordinate street, strengthen upstream and downstream linkage, and jointly control the Ziya River with neighboring districts, and make efforts to improve the quality of the water environment. The staff member said.
Ziya River (Hongqiao Section) was selected into the second batch of excellent cases of beautiful rivers and lakes, thanks to the increasing quality of the water environment. Through the dual water sources of Luan and Yangtze River, normalized ecological water replenishment is implemented to Ziya River, with an average annual ecological water supply of 0500 million cubic meters, further promoting the water circulation. The water quality of the Dahongqiao National Examination Section of Ziya River and the Tianheqiao City Examination Section has been stable in the past three years and has reached or exceeded the class level [according to the "Surface Water Environmental Quality Standard" (GB3838-2002) stipulates: Class water quality is good water quality;Class water quality is slightly polluted;The water quality is suitable for the second-level protection zone of the centralized drinking water source, the general fish protection area and the swimming area;The water quality is suitable for general industrial protection areas and recreational water areas that are not in direct contact with the human body;The water quality is suitable for agricultural water areas and general landscape requirements]. The staff of the Hongqiao District Ecological Environment Bureau said that the improvement of the water environment has brought about a great improvement in the living conditions of citizens and an overall change in the water ecological environment.
At present, the coverage rate of various aquatic plants in the Ziya River has reached more than 80%, and the underwater forest system constructed by upright plants and submerged plants provides a good living environment for the reproduction of various aquatic animals. Today's Ziya River (Hongqiao section), there are fish in the water, grass on the shore, ducks on the water, and birds in the air, like an ecological ribbon through the entire Hongqiao District.
The picture shows the scenery of the Haihe River (Hebei section).
Haihe River (Hebei section).
Constantly take care of the mother river There are many beautiful scenery on both sides of the Haihe River
Speaking of beautiful rivers and lakes, there is another one in Tianjin. In 2021, when the Ministry of Ecology and Environment (MEE) launched the first collection of excellent cases of beautiful rivers and lakes, Haihe River (Hebei section) was selected.
Haihe River is the mother river of Tianjin and the symbol of the city, Hebei District is the birthplace of Tianjin and one of the central urban areas, as early as the Westernization Movement, the district gathered a large number of modern industrial enterprises, densely populated, developed commerce. However, the Haihe River, which flows through this area, was once full of garbage and debris, and the sewage from the stalls operating on both sides of the river was directly discharged into the river, coupled with the large-scale water intake operations in the middle and upper reaches of the Haihe River and the discharge of urban sewage in the basin, resulting in a shortage of water resources and deterioration of water quality in the main stream of the Haihe River, and it is very easy to break out of cyanobacteria in summer. In particular, in 2012 and 2013, the algae density in some sections of the Haihe River exceeded 1.8 billion liters, and the dissolved oxygen in the water was less than 0 in extreme cases2mg l (milligrams per liter), fish and other aquatic organisms die due to lack of oxygen, and the problem of water quality deterioration is highlighted.
In 2020, the water quality of the Haihe River was improved from inferior to classified during the 12th Five-Year Plan period. Recently, the reporter saw on the bank of the Haihe River (Hebei section) that red-headed gulls and silver gulls flew over the winter, and many photography enthusiasts used their lenses to freeze the beautiful scenery here. On both sides of the Haihe River, there are many citizens walking and running, feeling the beauty of the Haihe River.
The water quality has improved dramatically, how is this done?Only by fundamentally cutting off the source of river pollution can we improve the quality of the ecological environment of the Haihe River. The reporter learned from Hebei District that the district is to pay close attention to the adjustment of the industrial structure, implement the policy of moving out of the textile, pharmaceutical, chemical and heavy metal industries in batches, and vigorously develop green industries such as trade and tourism, intelligent technology and financial services, and the total amount of pollutant emissions has dropped significantly, and the industrial chemical oxygen demand emissions in the region in 2020 will drop by more than 90% compared with 2015. The second is to pay close attention to pollution control, vigorously carry out sewage treatment quality and efficiency improvement projects, and invest 2300 million yuan to transform nearly 1,100 staggered and mixed points in old residential areas and confluence communitiesImplement the initial rainwater treatment project, with an investment of 36.8 billion yuan to build 450,000 cubic meters of storage tank, the initial rainwater will be discharged into the sewage treatment plant to reduce non-point source pollution;Implement the "zero" project of sewage outlets, and invest 09.6 billion yuan to carry out greening and improve the water ecological environment. The third is to pay close attention to capacity expansion, strengthen the utilization of reclaimed water sources, the effluent of the eastern suburbs sewage treatment plant can meet the water quality standards, and 600,000 tons of effluent per day can be supplemented to the regional surface water to achieve recycling. At the same time, Hebei District has strengthened the dispatch of water resources and implemented the water system connection project, so as to realize that the Haihe River (Hebei section) and all rivers in the region have "rivers and water" throughout the year. Fourth, pay close attention to management, the district has successively compiled and completed the Haihe River "one river, one policy" comprehensive improvement plan, water body standard plan, river patrol system and other policy documents, the implementation of weekly secret visits, monthly assessment, annual evaluation mechanism for river chiefs at all levels, and at the same time select and hire "civil river chiefs" for supervision.
And those beautiful scenery around you
Beautiful Coastal Gull Park ......The water is clear, the shore is green, the beach is clean, and the bay is beautiful
In recent years, the city has carried out special actions such as clear water rivers and clear water defense battles, which have promoted fundamental changes in the quality of the water ecological environment, and the scenes of "clear water, green banks, clean beaches, and beautiful bays" around the people have increased significantly.
The coastal section of the Sino-Singapore Tianjin Eco-City in Binhai New Area has accelerated the construction of beautiful bays, high-standard land-sea coordinated pollution control, and high-level marine ecological protection and restoration, retained enough urban coastal ecological space, and built an urban background color of blue and green, river and sea, and water-city integration, which has important reference significance for the ecological environment governance of similar coastal areas. "This is the reason why the Ministry of Ecology and Environment recommended the coastal section of the Sino-Singapore Eco-City in Binhai New Area to be selected as the second batch of 12 excellent cases of beautiful bays in 2023.
The picture shows the South Bay Park of the Sino-Singapore Eco-City.
With the arrival of winter, the Sino-Singapore Eco-City's Relict Gull Park has become a paradise for birds. Located on one of the nine bird migration routes in the world, Bagua Beach is a necessary stop for migratory birds. The Sino-Singapore Eco-City has taken the initiative to adjust its territorial and spatial planning, restore the natural shoreline and wetland functions of Baguatan, build a relict gull park, and demarcate a 540-hectare relict gull ecological conservation area. Today, a population of 10,000 relict gulls live here every year, the number of recorded bird species has increased from 106 at the beginning of the Eco-City's construction to 179 now, and endangered migratory birds such as white spoonbills, white-bellied harriers, white-tailed harriers and kestrels also inhabit and forage here.
The Eco-City has also comprehensively implemented the treatment and restoration of sewage sediment and the surrounding environment, and thoroughly treated the industrial sewage reservoir with an area of nearly 3 square kilometers that has accumulated for more than 40 years, so as to eliminate the risk of pollutants entering the seaThe protection of natural wetlands has been incorporated into the index system and overall planning, and the original wetlands such as the Ji Canal and the Old Road have been completely retained, and ecological restoration has been implemented, and a number of unique artificial wetlands such as Jinghu Lake and Huifeng River have been carefully createdRestore the waterfront coastline and create a sea-friendly leisure space.
Chaobai New River is the largest river in Baodi District and one of the rivers of the Haihe River system. In order to protect the clear water of the river, Baodi District has successively implemented projects such as dredging and comprehensive treatment of Chaobai New River, implemented the river and lake chief system, launched the battle to defend clear water, built a national wetland park, and effectively improved the water quality of Chaobai New River and restored the ecology on both sides of the river through a series of measures such as returning farmland to wetland, water system connectivity, afforestation and greening, and the water quality of the national examination section of Chaobai New River has been improved from inferior in 2016 to 2022, and the water purification function has been purified from the category when the river water enters the river to the category when it leaves the country. In 2023, the Chaobai New River Basin in Baodi District won the title of the seventh batch of national practice and innovation bases of "lucid waters and lush mountains are invaluable assets".
The returning clams
The razor clams are a kind of marine benthic shellfish that prefer to live in low-salinity water bodies, commonly known as razor clams, and most of them breed on the tidal flats of estuaries entering the sea. More than 30 years ago, it existed in large numbers in the natural sea area of the Bohai Sea in Tianjin. However, with the deterioration of the water quality in the Bohai Sea, it has been difficult to find clams since the first decade of the last century. In 2022, not only did the razor clams return, but their populations also existed in large numbers in estuaries such as Ziya New River and Duliujian River, which is a gratifying discovery.
Since 2010, Li Yongren, an associate professor of marine fishery resources at the College of Fisheries of Tianjin Agricultural University, has been conducting annual surveys of tidal flats in the estuary area. During an investigation in 2018, he accidentally found a razor clam, which had been missing for decades. In the following four years, in addition to the increase in numbers, the population of razor clams tended to extend from the estuary to the inland river. "Clams are a typical environmental representative marine benthic shellfish, which is particularly afraid of pollution, and its appearance shows that the pollutants in the rivers entering the sea have been effectively controlled. Li Yongren said.
Liu Jie, member of the party group and deputy director of the Municipal Bureau of Ecology and Environment, said that Tianjin has coordinated water resources security, water environment governance, and water ecological restoration, adhered to the four measures of "source control, pollution control, capacity expansion, and strict management" to control water, and governed the sea in accordance with the "three measures" of land and sea overall pollution control, ecological protection and restoration, and environmental risk prevention, and the quality of the water ecological environment has achieved a historic improvement. Tianjin will continue to consolidate and improve the level of water ecological and environmental protection, strengthen water environment supervision and upstream and downstream collaborative governance, and continue to fight the battle of clear water.
Experts talk
Good water, good scenery, good leisure
The improvement of the water environment can bring tangible benefits to the citizens, and the most important thing for everyone to have a high quality of life is to protect our own living environment. Liu Xianbin, a professor at the School of Ocean and Environment at Tianjin University of Science and Technology, believes that these benefits include: First, it provides citizens with a high-quality source of drinking water. A good water environment can ensure the quality of drinking water safety, so that everyone can receive clean and hygienic drinking water from the tap water pipeline, and prevent diseases caused by various water pollution. Second, water resources and biodiversity have been protected. Organisms need water to survive, and the quality of the water ecological environment determines the balance of the ecosystem. Third, it has promoted the development of tourism. A good water ecological environment can attract tourists, drive the development of tourism in our city, and improve the economic income of citizens. Fourth, it has a positive impact on aquaculture. A good aquatic ecological environment can provide a reliable guarantee for aquaculture, and ultimately bring safe and healthy aquatic products.
Li Haiming, a professor at the School of Ocean and Environment at Tianjin University of Science and Technology, said that the improvement of the water environment has also provided citizens with a variety of water activities and leisure and entertainment options. One can swim in the river, fish at the lake, or enjoy the picturesque water scenery in the park pond. These changes not only allow citizens to live in a better environment, but also further enhance the overall image and attractiveness of the city. The improvement of the water environment has brought a positive impact on the economic development of the city. Water is an important resource for production, agriculture and urban development, and a good water environment is the foundation for sustainable development. By controlling pollution and promoting the ecological restoration of water bodies, Tianjin has provided reliable water resources support for all walks of life, and has effectively promoted sustainable economic development. (Reporter Han Aiqing Photography Wu Di).