Nanchong City, Sichuan Province, located in the middle reaches of the Jialing River, is the most populous county in northeast Sichuan. The relationship between Nanfang County and Jialing River can be described by two sets of data: "class, class, class" and "100%, 60%, 95."2%", what do these two sets of data mean?What's the story behind the data?
In 2018, the water environment quality of the Jialing River (southern section) decreased from class to class, the natural shoreline rate decreased from 100% to 60%, the water ecological environment was damaged, the number of fish such as cochineal in the main stream was significantly reduced, and biodiversity was affected.
Behind these changes is the contradiction between the rapid development of the economy and the protection of the ecological environment. On the one hand, more than 60 sand and gravel farms are distributed along the Jialing River, and the sand and gravel mining and processing areas encroach on the river and crowd out the living space of organisms. On the other hand, with the rapid development of farmhouses and catering ships along the Jialing River, most of the catering wastewater and domestic sewage are directly discharged into the river, and the water environmental quality of the Jialing River continues to decline. In addition, pesticides, fertilizers, and livestock and poultry manure flow into the Jialing River with rainwater into the surface runoff, resulting in eutrophication of the water environment and the decline of water ecological functions.
At that time, it could be said that garbage was everywhere and sewage flowed sideways, and there were big problems in the protection of the entire coastline. Ren Yong, director of the Southern County Bureau of Ecology and Environment, told reporters. After being pointed out by the first ecological and environmental protection inspector, the southern county learned from the pain and made up its mind to carry out rectification.
We have carried out two major actions, built three major projects, and taken four major measures to improve the water quality of the Jialing River and improve the quality of the surrounding environment. Zhang Jingyi, a staff member of the Southern County Ecological Environment Bureau, said.
The two major actions refer to the treatment action and the shoreline clearance action, that is, the implementation of the two-year action of urban sewage, the new (re)construction of 491 kilometers of urban rain and sewage pipe network, and the completion of the Jialing River (southern section) 188 river outlets remediation tasks;In accordance with the law, 65 sand and gravel yards were dismantled, 5 illegal wharves were dismantled, 552 sand and gravel ships were reduced, and 396 "three-no" ships were banned.
The three projects refer to the river endogenous remediation project, the river and lake ecological water use project, and the biodiversity conservation project, that is, the investment 20600 million yuan to implement the Haokou River Ecological Restoration Project, the comprehensive treatment of the water environment in Manfu New Area and the embankment project on both sides of the Jialing RiverThe area of the sponge city is 824 square kilometers, clean up and rectify 15 small hydropower companies in the Yangtze River Economic Belt;The Yangtze River has been banned from fishing for 10 years, and more than 1.7 million cochineal and other fish have been released.
The four major measures refer to the restoration and improvement of the shoreline, the implementation of river basin greening, the deep excavation of water cultural resources, and the consolidation of value transformation, that is, the cleaning of river 342 km, 40 square coastline1 km, more than 2,700 acres of reclamation and greenery, and complete comprehensive soil erosion control 2296 km²;Afforestation 750,000 acres, 1,000 acres of green rivers, and 106 voluntary tree planting10,000 trees, the county's forest coverage rate of 4985%, the implementation of watershed greening, etc.
Nowadays, walking on the Jialing River, you can see the clear water and trees with some greenery. Up to now, the water quality of the Maliubao in the upper reaches of the Jialing River (southern section) and the Xinzheng Power Station and Jinxi Power Station in the downstream state-controlled section have been stable for a long time, and the protection rate of the natural coastline has increased from 60% to 952%。
class, class, class" and "100%, 60%, 95The two sets of data actually represent the changes in the water quality and natural shoreline rate of the Jialing River (southern section), and also the transformation of southern counties from "pollution first, treatment later" to "development and protection coordination".
We have a famous scenic spot called Yu Trace Mountain, Yu Trace Mountain is famous for leaving footprints in Yu to control the water. Ren Yong said, "We will integrate the spirit of Dayu into pollution prevention and control and the construction of beautiful rivers and lakes, and protect the beautiful Jialing River with heart." ”
*: China Environment News.