Location
Dayekou Guantan Forest Station is a forest flux observe station, affiliated to Heihe Remote Sensing Experimental Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences(CAREERI,CAS). This station located in Dayekou River Basin, belong to Horseshoe Tibetan country, Sunan Yugur Autonomous County, Zhangye City, Gansu Province. The site coordinate: 100°15′00.8″E, 38°32′01.3″N, 2835m. The underlying surface is cool-temperate coniferous, the typical Picea crassifolia Kom in the Qilian mountains.
Climatic
Dayekou Guantan Forest Station is locate in Dayekou River Basin, characterized by semi humid forest steppe climate with the following multiyear (1994-2011) annual means: air temperature, 1.62℃; precipitation, 374.06 mm. Minimum of month means, -11.91℃; maximum of month means, 14.38℃.
Vegetation and soil
Dayekou Guantan Forest Station is locate in shady slope forest，which constructive species is Picea crassifolia Kom, mostly in middle age and near mature forest, canopy closure is about 0.6, tree height 15-20m, the ground covered with about 10cm thick growth of moss.
Observation system
The Dayekou Guantan Forest Station have set up a weather station, close-path eddy-covariance flux measurement system. The eddy-covariance flux system is composed of three dimensional sonic anemometer(CSAT3, Campbell, USA）and open path CO2/H2O gas analyzer( Li7500, Li-cor, USA). The instrument mount-height was 20.02m, the ultrasound direction was at an azimuth angle of 74°, the distance between Li7500 and CSAT3 was 30cm and sampling frequency was 10HZ. Output Flux data are 30-minutes cycle.
Obervation start from Dec. 27, 2007 to Mar. 31, 2012 Observation items of weather were the multilayer (2m and 10m) wind speed and direction, the air temperature and moisture, rain and snow gauges, snow depth, photosynthetically active radiation, four components of radiation from two layers (1.68m and 19.75 m), stem sap flow, the surface temperature, the multi-layer soil temperature (5cm, 10cm, 20cm, 40cm, 80cm and 120cm),soil moisture (5cm, 10cm, 20cm, 40cm, 80cm and 120cm) and soil heat flux (5cm & 15cm).
Principal Investigator
Weizhen Wang
E-mail: weizhen@lzb.ac.cn
[1] Liu Qiang, Ma Mingguo, Wang Weizhen, Huang Guanghui, Zhang Zhihui, Tan Junlei. WATER: Dataset of eddy covariance observations at the Yingke oasis station. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. 2008. 10.3972/water973.0278.db
[2] Ma Mingguo, Wang Weizhen, Huang Guanghui, Zhang Zhihui,Tan Junlei. WATER: Dataset of automatic meteorological observations at the Yingke oasis station. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. 2008. 10.3972/water973.0284.db
[3] Zhangzhihui, Wang Weizhen, Ma Mingguo, Xu Ziwei, Wu Yueru, Huang Guanghui, Tan Junlei, Data processing and product analysis of Eddy Covariance flux data for WATER. Remote Sensing Technology and Application, 2010, 25(6): 788-796. View | Download
[4] Huang Guanghui, Ma Mingguo, Tan Junlei, Zhangzhihui. Data quality control and products of Automatic weather stations for Watershed Allied Telemetry Experimental Research. Remote Sensing Technology and Application, 2010, 25(6): 814-820.View | Download
[5] Ma Mingguo, Liu Qiang, Yan Guangjian, Chen Erxue, Xiao Qing, Supeixi, Hu Zeyong, Lixin, Niu Zheng, Wang Weizhen, Qian Jinbo, Song Yi, Ding Songshuang, Xin Xiaozhou, Ren Huazhong, Huang Chunlin, Jin Rui, Che Tao, Chu Rongzhong. Simultaneous remote sensing and ground-based experiment in the Heihe River Basin: Experiment of Forest Hydrology and Arid Region Hydrology in the Middle Reaches. Advances in Earth Science, 2009, 24(7): 681-695.View | Download
[6] Li Xin, Ma Mingguo, Wang J ian, Liu Qiang, Che Tao, Hu Zeyong, Xiao Qing, Liu Qinghuo, Su Peixi, Chu Rongzhong, Jin Rui, Wang Weizhen, Ran Youhua. Simultaneous remote sensing and ground based experiment in the Heihe river basin: Scientific objectives and experiment design[ J ]. Advances in Earth Science, 2008, 23 ( 9) : 897-914. View | Download
[7] Li X, Li XW, Li ZY, Ma MG, Wang J, Xiao Q, Liu Q, Che T, Chen EX, Yan GJ, Hu ZY, Zhang LX, Chu RZ, Su PX, Liu QH, Liu SM, Wang JD, Niu Z, Chen Y, Jin R, Wang WZ, Ran YH, Xin XZ, Ren HZ. Watershed Allied Telemetry Experimental Research. Journal of Geophysical Research, 2009, 114(D22103), doi:10.1029/2008JD011590.View | Download
[8] Wang Weizhen, Xu Ziwei, Liu Shaomin, Li xin, Mamingguo, Wang Jiemin.The characteristics of heat and water vapor fluxes over different surfaces in the Heihe River basin. Advances in Earth Science, 2009, 24(7): 714-723.View|Download
[9] Liu SM, Xu ZW, Wang WZ, Bai J, Jia Z, Zhu M, Wang JM. A comparison of eddy-covariance and large aperture scintillometer measurements with respect to the energy balance closure problem. Hydrology and Earth System Sciences, 2011, 15(4): 1291-1306. doi:10.5194/hess-15-1291-2011.