This data is the restoration of the distribution of the main ancient irrigation canals in the middle and upper reaches of the Heihe River Basin from the Ming Dynasty to the Republic of China. It is based on the basic data of reprinting ganzhenzhi, reconstructing the new records of Suzhou and ganzhoufu, and combined with the topographic map and image of the 1960s. It is provided in the form of ArcGIS software ShapeFile, GCS krasovsky 1940 coordinate system, and trans Mercator projection grid. The data type is linear vector, and its attributes include name, source, length, irrigation area, etc.
0 2020-03-09
1. Overview of data Based on the Google earth image data in 2012, the land use types of wetland parks were vectorized by visual interpretation method, which provided the data basis for wetland ecosystem service assessment. 2. Data content Land use types include wetland, farmland (corn, vegetables, wheat), water area, forest land, construction land, bare land, etc. Scale: 1: 50,000; Coordinate system: WGS84; Data type: vector polygon; Storage format: Dbf/Shp/Jpeg 3. Space-time range Coverage: Zhangye National Wetland Park; Total area: 46.02 square kilometers.
0 2020-07-30
Our project entrust the L band radiosonde sounding encrypt observations to Zhangye National Climate Observatory, and collect regular observation twice a day. The dataset contains three times one day at 8:00, 14:00, 20:00, which can support the remote sensing image atmospheric correction and atmospheric science research. Observation Site: Zhangye National Climate Observatory located in Shajing Town, west of ZhangYe. The coordinates of this site: 39°5′15.68" N, 100°16′39.11" E。 Observation Instrument: China Meteorological Administration Operational L Band radiosonde system. Observation Time: The observation date last from 1 May, 2012 to 31 September, 2012, among which: Three times observations at 7:00-8:00, 13:00-14:00 and 19:00-20:00 during 1 June, 2012 to 31 August, 2012; twice at 7:00-8:00 and 19:00-20:00 during 2012-5-1 to 5-31 and 2012-9-1 to 9-31. Accessory data： Pressure, temperature, relative humidity, wind speed and wind direction profiles data.
0 2019-09-15
This data set includes the continuous observation data set of soil texture, roughness and surface temperature measured by vehicle borne microwave radiometer from November 18 to 19, 2013 in Wuxing village farmland, Ganzhou District, Zhangye City, Gansu Province. The surface temperature and humidity include four layers of temperature sensor at the soil depth of 1cm, 5cm, 10cm, 20cm, and the observation of soil temperature and soil moisture data at the soil depth of 0-5cm. The time frequency of routine observation of soil temperature and humidity is 5 minutes. Data details: 1. Time: November 18-19, 2013 2. data: Brightness temperature: observed by vehicle mounted multi frequency passive microwave radiometer, including 6.925, 18.7 and 36.5ghz V polarization and H polarization data (10.65ghz band damage) Soil temperature: use sensor installed on dt80 to measure 1cm, 5cm, 10cm, 20cm soil temperature Soil moisture: use h-probe sensor to measure 0-5cm soil moisture, the probe can measure 0-5cm soil temperature at the same time Soil texture: soil samples measured in Beijing Normal University Soil roughness: measured by roughness meter provided by northeast geography 3. Data size: 3.5m 4. Data format:. Xls
0 2020-03-13
On 25 July 2012, a Leica ALS70 airborne laser scanner boarded on the Y-12 aircraft was used to obtain the point cloud data. Leica ALS70 airborne laser scanner has unlimited numbers of returns intensities measurements including the first, second, third return intensities. The wavelength of laser light is 1064 nm. The absolute flight altitude is 5500 m with the point cloud density 1 points per square meter. Aerial LiDAR- DSM was obtained through parameter calibration, automatic classification of point cloud density and manual editing.
0 2019-05-23
This data is the simulation data of land use changes using Dyna-CLUE model under multiple scenarios in Heihe River Basin. The time period is 1986-2030, 1986 is the actual reference data, and 1987-2030 is the simulation data. Scenarios include historical trend scenarios, ecological protection scenarios, strict ecological protection scenarios, economic development scenarios and rapid economic development scenarios. Dyna-CLUE model is used to simulate different scenarios. Data format is Arc ASCII format.
0 2019-09-13
1. Data overview: The sampling time of this data is from May 9, 2013 to March 29, 2014.The sampling frequency is once a week. The sampling point of the river is located at the outlet weir of the small haugou watershed in the upper reaches of the heihe river, with the latitude and longitude of 99 ° 52 '47.7 "E and 38 ° 16' 11" N. The sampling location of soil water is 300m above the no. 2 meteorological station, and the lower soil profile is 99°53 '31.333 "E,38°13' 50.637" N in longitude and latitude. 2. Data content: This data set contains the anion and anion values of the river at the outlet of the basin and the soil water at 300m above the no. 2 weather station. Data acquisition means - anion values were determined by Swiss wantong model 761/813 ion chromatograph.Cation is to use the model to the United States thermoelectric IRIS Intrepid Ⅱ XSPICP - AES determination.
0 2020-03-05
This data set contains meteorological element observation data of huazhaizi desert station in the middle reaches of heihe hydrological meteorological observation network from January 18, 2015 to December 31, 2015.The station is located in huazhaizi, zhangye city, gansu province.Huazhaizi station is equipped with observation instruments from Beijing normal university (longitude and latitude is 100.3201E, 38.7659N) and Cold and Arid Regions Environmental and Engineering Research Institute (longitude and latitude is 100.3186E, 38.7652N), with an altitude of 1,731m.The observation instrument of Beijing normal university has been installed since June 11, 2015. Specifically, the air temperature and relative humidity sensors are installed at 5m and 10m, facing due north.Install the barometer inside the waterproof box;The tilting bucket rain gauge is installed at 10m;The wind speed and direction sensor is set at 5m and 10m, facing due north;The four-component radiometer is installed at 6m, facing due south;Two infrared thermometers are installed at 6m, facing due south, and the probe facing vertically downward;The soil temperature probe is buried at 0cm of the surface and 2cm, 4cm, 10cm, 20cm, 40cm, 60cm and 100cm underground, 2m to the south of the meteorological tower.The soil water sensor is buried 2cm, 4cm, 10cm, 20cm, 40cm, 60cm and 100cm underground, 2m to the south of the meteorological tower.The soil hot plates (3 pieces) are buried 6cm underground.The observation instruments set up by Cold and Arid Regions Environmental and Engineering Research Institute are as follows: the wind speed sensor is set up at a height of 0.48m, 0.98m and 2.99m, with a total of three layers, facing north;The wind direction sensor is mounted at a height of 4m;Air temperature and relative humidity sensors are located at 1m and 2.99m respectively, with a total of 2 layers, facing north by east.The installation height of the four-component radiometer is 2.5m, facing due south;The air pressure sensor is placed in the waterproof box;The installation height of the tilting bucket rain gauge is 0.7m;The soil temperature probe is buried at depths of 4cm, 10cm, 18cm, 26cm, 34cm, 42cm and 50cm underground.The soil moisture sensors were buried underground 2cm, 10cm, 18cm, 26cm, 34cm, 42cm, 50cm and 58cm, respectively, with 3 repetitions buried in 2cm.Specific observation items are as follows: (1) observation items of Beijing normal university : air temperature and humidity (Ta_5m RH_5m Ta_10m, RH_10m) (unit: c, percentage), pressure (Press) (unit: hundred mpa), precipitation (Rain) (unit: mm), wind speed (WS_5m, WS_10m) (unit: m/s), wind (WD_10m) (unit: degrees), the radiation of four component (DR, UR, DLR_Cor, ULR_Cor, Rn) (unit:Watts/m2), surface radiant temperature (IRT_1, IRT_2) (unit: Celsius), soil heat flux (Gs_1, Gs_2, Gs_3) (unit: watts/m2), soil moisture (Ms_2cm, Ms_4cm, Ms_10cm, Ms_20cm, Ms_40cm, Ms_60cm, Ms_100cm) (unit:Volume moisture content, percentage) and soil temperature (Ts_0cm, Ts_2cm, Ts_4cm, Ts_10cm, Ts_20cm, Ts_40cm, Ts_60cm, Ts_100cm) (unit: Celsius). (2) observation items of Cold and Arid Regions Environmental and Engineering Research Institute : wind speed (WS_0. 48 m, WS_0. 98 m, WS_2. 99 m) (unit: m/s), wind (WD_4m) (unit: degrees), the radiation of four component (DR, UR, DLR_Cor, ULR_Cor) (unit: watts per square meter), air temperature and humidity (Ta_1m, Ta_2. 99 m, RH_1m, RH_2 99 m) (unit: c, percentage), pressure (Press) (unit: hundred mpa), precipitation (Rain) (unit:Mm), soil temperature (Ts_4cm, Ts_10cm, Ts_18cm, Ts_26cm, Ts_34cm, Ts_42cm, Ts_50cm) (unit: Celsius), soil moisture (Ms_2cm_1, Ms_2cm_2, Ms_2cm_3, Ms_10cm, Ms_18cm, Ms_26cm, Ms_34cm, Ms_42cm, Ms_50cm, Ms_58cm) (unit: volumetric water content, percentage). The observed elements of Beijing normal university were the mean value of 10min, and those of Cold and Arid Regions Environmental and Engineering Research Institute were the mean value of 30min. Processing and quality control of observation data :(1) ensure 144 observation data elements of Beijing normal university every day (every 10min); Ensure the observed elements of Cold and Arid Regions Environmental and Engineering Research Institute are 48 data per day (every 30min). If the data is missing, it will be marked by -6999.Due to the problem of the wind speed sensor, the 10m wind speed observed by Beijing normal university was missing between June 21-7.09, 2015 and December 16-12.25.Due to the problem of data storage, the precipitation observed by Cold and Arid Regions Environmental and Engineering Research Institute is missing between 1.18 and 1.22.(2) excluding the time with duplicate records;(3) data that obviously exceeds the physical significance or the range of the instrument is deleted;(4) the part marked with red letter in the data is the data in question;(5) date and time have the same format, and date and time are in the same column.For example, the time is: June 10, 2015, 10:30;(6) the naming rule is: AWS+ site name. For information of hydrometeorological network or station, please refer to Li et al. (2013), and for observation data processing, please refer to Liu et al. (2011).
0 2020-03-04
Railway distribution map is the basic data in the mapping process. In order to facilitate the use of users, we compiled the railway data set of Heihe River basin according to the railway data set distributed by the National Basic Geographic Information Center, the atlas of Gansu Province compiled by the Gansu Provincial map Geographic Information Center, the sky map and Guge map published by the China Surveying and Mapping Bureau. This data basically reflects the distribution of Railways around the Heihe River basin around 2010. The national standard of data classification and coding of national basic geographic information system - Classification and code of basic land information data (GB / T 13923-92) is adopted for railway coding, and the code is five digit code (National Basic Geographic Information Center 2010).
0 2020-10-12
The No. 6 hydrological section is located at Ban Heihe River Bridge (39°15′32.41″ N，100°16′33.95″ E, 1398 m a.s.l.) in the middle reaches of the Heihe River Basin, Zhangye, Gansu Province. The dataset contains observations from the No.6 hydrological section from 19 June, 2012, to 10 August, 2012. The width of this section is 270 meters. The water level was measured using HOBO pressure range and the discharge was measured using cross-section reconnaissance by the StreamPro ADCP. The dataset includes the following sections: Water level (recorded every 30 minutes) and Discharge. The data processing and quality control steps were as follows: 1) The water level data which collected from the hydrological station were averaged over intervals of 10 min for a total of 144 records per day. The missing data were denoted by -6999. 2) Data out the normal range records were rejected. 3) Unphysical data were rejected. For more information, please refer to Liu et al. (2016) (for multi-scale observation experiment or sites information), He et al. (2016) (for data processing) in the Citation section.
0 2019-09-13
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