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Yanqi River in Shentang Valley, Beijing, China

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China, Beijing, Huairou District, Shentang Valley

Yanqi River Basin located in Shentang valley has beautiful natural environment, rich in biological resources. In the slow flow area of the river, there are a large number of Vallisneria natans, Hydrilla verticillata, Nymphaea tetragona and Phragmites australis. Pungitius sinensis lives in this area together with other fish. Pungitius sinensis prefers the shallow areas with dense water plants growth. It likes low water temperature and swims gracefully. It is a special fish species in Northern China.

Submitted by
Jiaying Hou
GPS
40.4163017, 116.6378708
Geographical region
Eastern Asia
Drainage Basin
Hai River
River catchment
Yongding River
Water body type
River
Water body name
Yanqi
Water body part
Open water
Water body course
Lower course
Water body: tributary of
River
Tributary name
Huaihe

Videos above and below water

Water Chemistry

Water information

Water type
Fresh water
Water color
Clear water
Water transparency
High
Concentration of sediments
Medium
Water temperature
22 °C
Water flow/curent
Slow

Chemical parameters

pH
7.2
Conductivity
GH
5.0 mg/l
KH
Dissolved Oxygen

Substrate in nature

Sand
Grey
Pebble/Gravel
Mixed
Stone
Brown
Stone form
Irregular
Silt/Mud
Brown
Leaves
Few
Driftwood
Few
Submerged terrestrial vegetation
No

Aquatic Biotope

Date of collecting
July 6, 2022
Collecting area
River bank
Water depth
0,5m
Air temperature
Sunlight
Full sun

Environment

Environment
Human settlements
Human settlements
Compacted
Surrounding area

Yanqi River is located in Shentang Valley in Beijing which is about 70 kilometers from the Beijing urban area. The Scenic area has a green vegetation coverage rate of more than 75% with lush trees, fresh air, clean water quality and little pollution. The climate is pleasant, with a high day and night temperature difference. The average annual temperature in the area is between 7-19 degrees Celsius, with the rainy season from June to September and the dry season from October to January.

Underwater landscape

Yanqi River located in Shentang Valley is about 5-10 meters wide and 20cm-1m deep. The river is filled with varying sizes of pebbles covered with algae. The river substrate is sandy in most areas, and the water in the center is fast and clear. The water in the shallow stream area is covered by a thick layer of mud, which provides good growing environment for plants such as Vallisneria natans, Hydrilla verticillata, Nymphaea tetragona and Phragmites australis.

Fishes:

  • Zacco platypus
  • Opsariichthys bidens
  • Rhynchocypris lagowskii
  • Rhodeus ocellatus
  • Pungitius sinensis
  • Abbottina rivularis
  • Cobitis sp.

Aquatic plants:

  • Batrachium pekinense
  • Potamogeton crispus
  • Vallisneria natans
  • Hydrilla verticillata
  • Nymphaea tetragona
  • Phragmites australis

 

Threats to ecology

Riparian zone

Trees near the aquatic habitat
Few -