Meteorological, albedo and evapotranspiration data set of hulugou shrub experimental area in the upper reaches of Heihe River (2012-2014)

The data set is the meteorological and observational data of hulugou shrub experimental area in the upper reaches of Heihe River, including meteorological data, albedo data and evapotranspiration data under shrubs.1. Meteorological data: Qilian station longitude: 99 ° 52 ′ E; latitude: 38 ° 15 ′ n; altitude: 3232.3m, scale meteorological data from January 1, 2012 to December 31, 2013. Observation items include: temperature, humidity, vapor pressure, net radiation, four component radiation, etc. The data are daily scale data, and the calculation period is 0:00-24:002. Albedo: daily surface albedo data from January 1, 2012 to July 3, 2014, including snow and non snow periods. The measuring instrument is the radiation instrument on the 10m gradient tower in hulugou watershed. Among them, the data from August 4 to October 2, 2012 was missing due to instrument circuit problems, and the rest data quality was good3. Evapotranspiration: surface evapotranspiration data of Four Typical Shrub Communities in hulugou watershed. The observation period is from July 18 to August 5, 2014, which is the daily scale data. The data include precipitation data, evaporation and infiltration data observed by lysimeter. The data set can be used to analyze the evapotranspiration data of alpine shrubs and forests.The evapotranspiration of grassland under canopy was measured by a small lysimeter with a diameter of 25 cm and a depth of 30 cm. Two lysimeters were set up in each shrub plot, and one lysimeter was set for each shrub in transplanting experiment. The undisturbed undisturbed soil column with the same height as the barrel is placed in the inner bucket, and the outer bucket is buried in the soil. During the embedding, the outer bucket shall be 0.5-1.0 cm higher than the ground, and the outer edge of the inner barrel shall be designed with a rainproof board about 2.0 cm wide to prevent surface runoff from entering the lysimeter. Lysimeter was set up in the nearby meteorological stations to measure grassland evapotranspiration, and a small lysimeter with an inner diameter of 25 cm and a depth of 30 cm was also set up in the sample plot of Picea crassifolia forest to measure the evaporation under the forest. All lysimeters are weighed at 20:00 every day (the electronic balance has a sensing capacity of 1.0 g, which is equivalent to 0.013 mm evaporation). Wind proof treatment should be taken to ensure the accuracy of measurement.Data processing method: evapotranspiration is mainly calculated by mass conservation in lysimeter method. According to the design principle of lysimeter lysimeter, evapotranspiration is mainly determined by the quality difference in two consecutive days. Since it is weighed every day, it is calculated by water balance.

本数据集收录了黑河上游胡鲁沟灌木实验区的气象观测数据，涵盖气象数据、反照率数据和灌木层下的蒸散量数据。其中，气象数据包括温度、湿度、蒸汽压、净辐射、四分量辐射等要素，自2012年1月1日至2013年12月31日，以日尺度进行观测，观测站点为祁连站，经度为99°52′E，纬度为38°15′N，海拔高度为3232.3米。反照率数据为2012年1月1日至2014年7月3日的日尺度地表反照率数据，包括雪期和非雪期数据，使用胡鲁沟流域10米梯度塔上的辐射仪器进行测量。2012年8月4日至10月2日因仪器电路故障数据缺失，其余数据质量优良。蒸散量数据为胡鲁沟流域四个典型灌木群落地表蒸散量数据，观测时段为2014年7月18日至8月5日，数据包括降水数据、蒸发和入渗数据，由蒸渗仪进行观测。数据集可用于分析高山灌木和森林的蒸散量数据。灌木层下的草地蒸散量通过直径25厘米、深度30厘米的小型蒸渗仪进行测量，每个灌木群落设置两个蒸渗仪，移植实验中的每株灌木设一个蒸渗仪。未受干扰的土壤柱与桶同高，置于内桶中，外桶埋入土壤，埋设时外桶应高出地面0.5-1.0厘米，内桶外缘设计约2.0厘米宽的防水板，以防止地表径流进入蒸渗仪。邻近气象站设置蒸渗仪测量草地蒸散量，在云杉林样地中也设置直径25厘米、深度30厘米的小型蒸渗仪以测量林下的蒸发。所有蒸渗仪每日20:00进行称重（电子天平感量为1.0克，相当于0.013毫米的蒸发量），并采取防风措施以确保测量精度。数据处理方法主要依据蒸渗仪质量守恒原理计算蒸散量，根据蒸渗仪的设计原理，蒸散量主要通过连续两日质量差值确定。由于每日进行称重，因此通过水分平衡法进行计算。