{"id":"7c9f3e74-02d1-431f-85c2-50f54d25bb8b","title":"黑河生态水文遥感试验：水文气象观测网数据集（热扩散液流计-2015）","title_en":"HiWATER: Dataset of hydrometeorological observation network (thermal dissipation sap flow velocity probe, 2015)","serial":"HiWATER","user_limit":"本数据由“黑河生态水文遥感试验（HiWATER）”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。","instructions":"","description":"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)。","doi":"10.3972/hiwater.331.2016.db","projection":"4326","language":"zh","share_type":"offline","east":101.1346,"west":101.1346,"south":41.99,"north":41.99,"scale":null,"crs":null,"filesize":15.26,"share_policy":"c","ts_created":"2016-07-22T00:43:39+08:00","doi_type":"","ts_updated":"2021-04-19T10:36:43.831790+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":"EXCEL","project":[10,11,15],"specials":["ee3dfdf5-2e9f-4b61-a301-4fb49e30e3c2","d935d7e7-731f-47b6-8ad1-b29e2c33c1de","d3df05b2-568a-4f28-91b7-42332acfdd44","65db91e8-6ed0-4ecc-9b4b-ecea96f1d7f7","bc9b5997-afeb-4872-8645-8e5dda9870d8","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":null,"spatial_resolution":null,"license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[192],"subtopics":{"metadata":"7c9f3e74-02d1-431f-85c2-50f54d25bb8b","three_pole":null,"third_pole":null},"username":"胡晓利","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":8694}