"Underwater Forest" scene shows the good water ecology of Beijing

The water is green and the fish is shallow. In 2021, the length of the water quality rivers in Beijing Ⅰ -Ⅲ accounted for 75.2%of the total monitoring length, an increase of 11.4 percentage points year -on -year, and there were no inferior rivers. Most rivers and lakes in the city have gradually realized "clear bottom." The Beijing Ecological and Environment Bureau stated that on the basis of the "Thirteenth Five -Year Plan" Bi Shui Defense Battle to surrender the excellent "transcript", during the "Fourteenth Five -Year Plan" period, the city's benchmarking water ecological environmental protection work and adhering to the use of ecological measures to solve the ecology of ecology. The problem is to promote the water ecological restoration of the river basin represented by Xinfeng River, and strive to achieve the goal of "there are rivers and water, fish and grass, and harmonious people."

Underwater beautiful scenery scrolls open slowly

In the midsummer season, the Tanghe River in Huairou District meandered, the trees on the shore were lush, and the bushes and grass grew staggered. In the clear water, a group of vitality, the reeds, mugs, grass and other aquatic plants grow lush growth. Under the large and small stones at the bottom of the river, there are primer living creatures such as marsh shrimp, sturgeon, stone moth, dragonfly larvae, and bright colors. Fish such as wide -fin, rod flowers, wheat ears and other fish are free, forming a pleasing "underwater forest" scenery.

The emergence of "underwater forests" is a manifestation of good water ecology. Feng Kai, an investigator of the Water Ecological Environment Department of the Beijing Ecological Environment Bureau, introduced that the aquatic ecology includes aquatic biological communities and the corresponding living environment. The biological type covers floating plants (such as cyanobacteria, green algae, diatoms, etc.) Wheels, water ravioli, etc.), aquatic plants (such as reeds, grass, goldfish algae, etc.), benthic animals (such as aquatic insects, snails, shells, shrimp, etc.), and fish.

"Water ecological conditions are good or not, not only depends on whether the water body is clean, but also the richness and richness in the water in the water, and whether there is environmental conditions suitable for biological survival." Feng Kai said that in the water ecological conditions, rivers, lakes and reservoirs in the water ecology are good It will form a relatively stable and complete aquatic biological community, like a "underwater forest", which exerts the role of maintaining the cleaning of water and self -purification, improving the water body landscape and ecological value.

Touch the water underwater world "home bottom"

In order to find out the "family bottom", Beijing has built a water ecological survey and monitoring network. On the basis of the water environmental quality monitoring network, the water ecological survey monitoring point is set up, covering the five major water systems in the city with water rivers, lakes and reservoirs. The monitoring content includes aquatic biological indicators, water quality indicators, and habitat indicators.

From 2020 to 2021, a total of 134 species of floating plants, 231 floating animals, 284 species of float animals, and 41 fish were surveyed. Essence

Taking the most common fish as an example, fish is an important member of the water ecosystem. The diversity of fish reflects the integrity of rivers and lakes and the integrity of the food chain. Through the investigation, 41 kinds of fish were found. Among them, wheat ears and high bodies are widely existed in the city's rivers, and fish such as wide -fin, ponym, and black finbarium are distributed in the clean river in the mountains. In recent years, the number of these indigenous fish has increased significantly, and the distribution range has become more and more wide. The trails of black -fin and pony fish can also be found in some cities, which confirms that the city's water ecological environment is getting better.

Governance evaluation to ecological indicators transition

"Previously evaluating water governance, mainly through a series of water environmental physical and chemical indicators to evaluate, and the current evaluation is more biased towards ecological indicators and more comprehensive." Feng Kai introduced that he referred to at home and abroad. Based on the requirements of the evaluation technical requirements, based on the characteristics of the water system in the city, the city focuses on the integrity of the water ecosystem, and initially builds a comprehensive evaluation method containing elements such as aquatic creatures, water quality and habitats to more comprehensively reflects the water ecological environment of the watershed water. situation.

The Chaobai River Basin is mainly mountainous and rivers, clean water quality, and rich water and grass. There are 23 species for indicating the cleaning status of water bodies) and 35 fish. The richness of biomedia species in the five watersheds is relatively best. Among them, the comprehensive evaluation of the ecological status of Huaijiu River in Huairou District, Yanqing District reached the "excellent" level, and also collected the second -level protective fish of China in Huaijiuhe to some extent that the water quality of the area was cleaned and ecological in the area. For the better.

Ecological repair allows water to live

"The upstream is naturally recovered and the downstream is moderate manually." This city focuses on the river channels of the regenerative water supply of the plain area. In the Xinfeng River and Fenghe, Fengtai District Hexi area such as the Daxing District, the pilot pilot of rivers and water ecological restoration is explored by local conditions.

Today's Xinfeng River, both sides of the river bank are ecological buffer bands built by local local plants to restore the natural shoreline of the river; you can also see "fish troughs" built with natural materials such as round wood along the river. Aquatic animals and amphibians provide inhabitation, reproduction and refuge.

"Based on the experience of ecological restoration of Xinfenghe, we penetrate the concept of" ecological measures to solve ecological problems' "throughout the entire Fenghe ecological restoration project, and actively explore the path of replenishment of river replenishment in the northern region." The relevant person in charge of the bureau introduced, "In addition to being seen on the shore, we have also built the city's first set of water video observation systems in the city, which can be more convenient and in real time. Wait for activities. "

- END -