Location

Flux observation site of Pinus sylvestris var. mongolica plantation in western Liaoning is affiliated with Institute of Forestry, Chinese Academy of Forestry. The station locates at Heishui Town, Jianping County, Chaoyang City, Liaoning Province ( 41°58′33″N，119°25′32″E，asl 550m ). The vegetation type of the underlying surface of the flux tower is Middle temperate artificial evergreen coniferous forest.

Climatic

Continental monsoon climate.

mean annual temperature：5.76 ℃; mean annual precipitation: 440mm; mean annual evaporation: 1914mm; mean annual sunshine duration: 2922h; precipitation is uneven and droughts occur frequently.

Vegetation and soil

The area surrounding the Flux Tower is a forest of Pinus sylvestris var. mongolica plantation. The canopy height is about 15m. The main vegetation on the forest floor is Cleistogenes squarrosa (Trin.) Keng

The soil type on the forest floor is grey-brown soil.

Observation system

Infrared H2O/CO2 gas analyzer: installed at a height of 14.7m, model LI-7500

Sonic anemometer: installed at a height of 14.7m, model CSAT-3B

Net radiation sensor: installed at a height of 15.5m, model CNR-4

PAR sensor: installed at a height of 14.7m, model LI190SB

Air temperature/humidity probe: installed at a height of 14.7 m, model HMP45C

Automatic rain gauge: installed at a height of 18m, model TE525

Soil heat flux: installed at a depth of 0.05m, model HFP01SC

Soil temperature/humidity probe: installed at a depth of 0.1/0.2/0.3m, model CS650

The data sampling frequency: 10Hz, the average flux time: 30min

Principal Investigator

Hui Huang

E-mail: h_hui@126.com