该数据集包含了2015年1月1日至12月31日期间水文气象观测网中热扩散液流计数据，研究区位于黑河下游内蒙古自治区阿拉善盟额济纳旗胡杨林。根据胡杨林的不同高度及胸径，选取样树安装热扩散液流计 (Thermal Dissipation sap flow velocity Probe, TDP)，采用国产TDP插针式热扩散植物液流计，型号为TDP30。在混合林站及胡杨站附近分别设置样地TDP1点和TDP2点。样树高度从高到低依次为TDP2（16.4米、18.3米、16.9米）、TDP1（12.5，米、13米、14米），胸径从大到小依次为TDP1（48厘米、41.6厘米、46.6厘米）、TDP2（33.8厘米、38.5厘米、42.3厘米），密度分别为TDP1（0.0158棵/平方米）、TDP2（0.0116棵/平方米），以此代表整个区域进行胡杨蒸腾量的测量。每棵样树安装两组探针，高度为1.3米，方位分别为样树正东和正西方向。
\nTDP的原始观测数据为探针之间的温度差，采集频率为10s采集一次，平均为10分钟输出。发布的数据为经过计算和处理之后的树干液流数据，包括每10分钟的液流速率V（cm/h）、液流通量Fs（cm3/h）和每天的蒸腾量Q（mm/d）。首先根据探针之间的温度差计算液流速率和液流通量，然后根据观测点的胡杨林面积和树木间距，计算得到林带单位面积的蒸腾量Q。同时对计算之后的速率和通量值进行后处理：（1）剔除明显超出物理意义或超出仪器量程的数据；（2）缺失的数据用-6999标记；（3）因探针故障等原因引起的可疑数据用红色字体标识，并剔除确认有问题的数据。
\n水文气象网或站点信息请参考Li et al. (2013)，观测数据处理请参考Qiao et al. (2015)。。
", "ds_source": "", "ds_process_way": "", "ds_quality": "", "ds_acq_start_time": "2015-01-08 00:00:00", "ds_acq_end_time": "2016-01-07 00:00:00", "ds_acq_place": "下游天然绿洲试验区, 黑河流域", "ds_acq_lon_east": 101.13333333333334, "ds_acq_lat_south": 41.99, "ds_acq_lon_west": 101.13333333333334, "ds_acq_lat_north": 41.99, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 9380778, "ds_files_count": 1, "ds_format": "*.xlsx", "ds_space_res": "", "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "2c91c7c9-7c0d-4b27-994b-aeea98992a27.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": "", "organization_id": "7314e349-6d56-45d3-93c1-5068a74cdfde", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 0, "publish_time": "2026-04-29 11:39:38", "last_updated": "2026-04-29 11:39:38", "protected": false, "protected_to": null, "lang": "zh", "cstr": "", "i18n": { "en": { "title": "HiWATER: Dataset of hydrometeorological observation network (thermal dissipation sap flow velocity probe, 2015)", "ds_format": "*.xlsx", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "This dataset contains data from thermal diffusive flow meters in the hydro meteorological observation network from January 1 to December 31, 2015. The study area is located in the Populus euphratica forest in Ejina Banner, Alxa League, Inner Mongolia Autonomous Region, downstream of the Heihe River. According to the different heights and breast height diameters of Populus euphratica forests, sample trees were selected to install Thermal Dissection SAP Flow Velocity Probes (TDP), using domestically produced TDP pin type TDP plant flow meters with the model TDP30. Set up TDP1 and TDP2 sampling points near the mixed forest station and Populus euphratica station, respectively. The height of the sample trees from high to low is TDP2 (16.4 meters, 18.3 meters, 16.9 meters), TDP1 (12.5 meters, 13 meters, 14 meters), and the diameter at breast height from large to small is TDP1 (48 centimeters, 41.6 centimeters, 46.6 centimeters), TDP2 (33.8 centimeters, 38.5 centimeters, 42.3 centimeters), with densities of TDP1 (0.0158 trees/square meter) and TDP2 (0.0116 trees/square meter), respectively, to represent the measurement of Populus euphratica transpiration in the entire area. Two sets of probes are installed on each sample tree, with a height of 1.3 meters and orientations towards the east and west of the sample tree.
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