本数据集为黑河流域水文气象观测网的碳通量原始观测数据。为便于数据使用者便捷、高效地应用该数据，结合碳通量数据的专题应用需求，对该观测网的碳通量观测数据及其密切相关的气象环境因子进行了进一步后处理：对缺失的气象要素和碳通量数据进行插补，对碳通量数据进行拆分，最终获得时间连续的总初级生产力（GPP）、生态系统呼吸（Reco）、生态系统交换量（NEE），以及相关气象环境因子（包括向下短波辐射Rg、空气温度Ta、表层土壤温度Ts、空气相对湿度RH、饱和水汽压差VPD、表层土壤水分SWC、降水P、大气压PA、摩擦风速uStar）。
该数据集包含了 34 个站点，其中 18 个站点有连续多年观测，16 个站点只在 2012 年生长季进行了观测。站点涵盖了多种植被类型，包括高寒草甸、高寒沼泽草甸、亚高山森林、干旱区河岸林、农田和湿地、戈壁/沙漠等。详细的站点信息和数据格式介绍请参见数据文件中的“Fair_Data_Use_Policy_and_Readme_Heihe_carbon_flux.docx”。\"", "ds_source": "
（1）仪器布设：涡动相关仪的架高4.5m，采样频率10Hz，超声朝向是正北向，超声风速温度仪（CSAT3）与CO2/H2O分析仪（Li7500RS）之间的距离是15cm。空气温度、相对湿度传感器架设在5m处，朝向正北；气压计安装在地面上的防撬箱内；翻斗式雨量计安装在10m处；四分量辐射仪安装在6m处，朝向正南；两个红外温度计安装在6m处，朝向正南，探头朝向是垂直向下；土壤温度探头埋设在地下10cm处，在距离气象塔2m的正南方；土壤水分探头埋设在地下10cm处，在距离气象塔2m的正南方。
（2）观测项目：空气温湿度（Ta_5m、RH_5m）（单位：摄氏度、百分比）、气压（Press）（单位：百帕）、降水量（Rain）（单位：毫米）、风速（WS_10m）（单位：米/秒）、风向（WD_10m）（单位：度）、辐射（RG）（单位：瓦/平方米）、土壤温度（Ts）（单位：摄氏度）、土壤水分（Ms）（单位：体积含水量，百分比）。", "ds_process_way": "
对缺失的气象要素和碳通量使用随机森林进行插补。", "ds_quality": "
质量标识分为两级（质量标识 0 表示数据质量好， 1 表示插补数据）。", "ds_acq_start_time": "2012-06-01 00:00:00", "ds_acq_end_time": "2024-12-31 00:00:00", "ds_acq_place": "黑河流域", "ds_acq_lon_east": 101.13611111111112, "ds_acq_lat_south": 37.83833333333334, "ds_acq_lon_west": 98.94055555555556, "ds_acq_lat_north": 42.11361111111111, "ds_acq_alt_low": 873.0, "ds_acq_alt_high": 4148.0, "ds_share_type": "login-access", "ds_total_size": 355495804, "ds_files_count": 3, "ds_format": "CSV", "ds_space_res": "", "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "a1d7dc76-2515-4ae5-8cb4-5863202f07b8.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.1599" ], "quality_level": 3, "publish_time": "2026-03-19 18:26:04", "last_updated": "2026-03-19 18:26:04", "protected": false, "protected_to": null, "lang": "zh", "cstr": "18406.11.Terre.tpdc.301321", "i18n": { "en": { "title": "A post-processed carbon flux dataset for 34 eddy covariance flux sites across the Heihe River Basin, China", "ds_format": "CSV", "ds_source": "
(1) Instrument layout: The vortex correlation instrument is mounted at a height of 4.5m, with a sampling frequency of 10Hz. The ultrasonic direction is due north, and the distance between the ultrasonic wind speed temperature meter (CSAT3) and the CO2/H2O analyzer (Li7500RS) is 15cm. The air temperature and relative humidity sensors are mounted at a distance of 5m, facing due north; The barometer is installed in an anti pry box on the ground; The tipping bucket rain gauge is installed at a distance of 10m; The four component radiometer is installed at a distance of 6m, facing due south; Two infrared thermometers are installed at a distance of 6m, facing due south, with the probes facing vertically downwards; The soil temperature probe is buried 10cm underground, just south of the meteorological tower 2m away; The soil moisture probe is buried 10cm underground, just south of the meteorological tower 2m away.
(2) Observation items: Air temperature and humidity (Ta_5m, RH_5m) (unit: Celsius, percentage), air pressure (Press) (unit: hectopascal), precipitation (Rain) (unit: millimeter), wind speed (WS_10m) (unit: meter/second), wind direction (WD_10m) (unit: degree), radiation (RG) (unit: watt/square meter), soil temperature (Ts) (unit: Celsius), soil moisture (Ms) (unit: volumetric moisture content, percentage).", "ds_quality": "
Quality identification is divided into two levels (quality identification 0 indicates good data quality, and 1 indicates interpolated data).", "ds_ref_way": "", "ds_abstract": "
This dataset is the raw observation data of carbon flux from the hydrological and meteorological observation network in the Heihe River Basin. In order to facilitate the convenient and efficient application of this data by data users, combined with the special application requirements of carbon flux data, further post-processing was carried out on the carbon flux observation data and its closely related meteorological environmental factors of the observation network: missing meteorological elements and carbon flux data were interpolated, and the carbon flux data was split to obtain time continuous total primary productivity (GPP), ecosystem respiration (Reco), ecosystem exchange capacity (NEE), as well as related meteorological environmental factors (including downward shortwave radiation Rg, air temperature Ta, surface soil temperature Ts, relative air humidity RH, saturated vapor pressure difference VPD, surface soil moisture SWC, precipitation P, atmospheric pressure PA, friction wind speed uStar).
This dataset contains 34 sites, of which 18 sites have been observed continuously for many years, and 16 sites only observed during the 2012 growing season. The site covers multiple vegetation types, including alpine meadows, alpine swamp meadows, subalpine forests, riparian forests in arid areas, farmland and wetlands, Gobi/desert, etc. For detailed site information and data format introduction, please refer to the \"Fair_data-Use-Policy_and_Seadme-Heihe_carbon_flux. docx\" in the data file. \"", "ds_time_res": "", "ds_acq_place": "Heihe River Basin", "ds_space_res": "", "ds_projection": "", "ds_process_way": "
Use random forests to interpolate missing meteorological elements and carbon fluxes.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_outside", "cstr_reg_from": "reg_outside", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "碳通量", "黑河流域", "涡动通量站" ], "ds_subject_tags": [ "大气科学其他学科" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域" ], "ds_time_tags": [ 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 ], "ds_contributors": [ { "true_name": "王旭峰", "email": "wangxufeng@lzb.ac.cn", "work_for": " 中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "车涛", "email": "chetao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "肖劲峰", "email": "j.xiao@unh.edu", "work_for": "新罕布什尔大学", "country": "中国" }, { "true_name": "王同红", "email": "wangtonghong@nieer.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "谭俊磊", "email": "tanjunlei@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "张阳", "email": "zhangyang@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "任志国", "email": "rzgehu@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "耿丽英", "email": "gengly02@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "王海波", "email": "wanghaibokm@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "徐自为", "email": "xuzw@bnu.edu.cn", "work_for": "北京师范大学地理学与遥感科学学院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "王旭峰", "email": "wangxufeng@lzb.ac.cn", "work_for": " 中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "车涛", "email": "chetao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "肖劲峰", "email": "j.xiao@unh.edu", "work_for": "新罕布什尔大学", "country": "中国" }, { "true_name": "王同红", "email": "wangtonghong@nieer.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "谭俊磊", "email": "tanjunlei@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "张阳", "email": "zhangyang@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "任志国", "email": "rzgehu@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "耿丽英", "email": "gengly02@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "王海波", "email": "wanghaibokm@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "徐自为", "email": "xuzw@bnu.edu.cn", "work_for": "北京师范大学地理学与遥感科学学院", "country": "中国" } ], "ds_managers": [ { "true_name": "王旭峰", "email": "wangxufeng@lzb.ac.cn", "work_for": " 中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "王同红", "email": "wangtonghong@nieer.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "生态" }