该数据集包含了2025年5月26至2025年11月28日的黑河水文气象观测网下游四道桥超级站叶面积指数观测数据。站点位于内蒙古额济纳旗四道桥，海拔870 m，下垫面是柽柳。观测在四道桥超级站（101.1374E, 42.0012N）旁开展，样方1个，大小约30m×30m，每个样方内布设4个冠层下节点和1个冠层上节点。
\n本数据集由叶面积指数无线传感网（LAINet）获取，该仪器原始观测数据为仪器自动获取的每个节点逐日逐小时的光照数据（Level0），利用LAINet软件对原始观测数据进行处理，逐节点计算每天LAI（Level1），进一步对无效值识别与填充，并7天滑动平均消除天气变化对LAI计算的影响（Level2），对有多个LAINet节点的观测子区，节点的均值为该子区的最终观测值（Level3）。
\n本次发布的数据集为处理后的Level3产品，数据以*.xls格式存储。
\n黑河流域地表过程综合观测网或站点信息请参考Liu et al. (2018)和Liu et al. (2023)。
", "ds_source": "黑河流域地表过程综合观测网下游四道桥
", "ds_process_way": "", "ds_quality": "", "ds_acq_start_time": "2025-05-26 00:00:00", "ds_acq_end_time": "2025-11-28 00:00:00", "ds_acq_place": "黑河流域地表过程综合观测网下游四道桥超级站", "ds_acq_lon_east": 101.13722222222223, "ds_acq_lat_south": 42.01111111111111, "ds_acq_lon_west": 101.13722222222223, "ds_acq_lat_north": 42.01111111111111, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 12069, "ds_files_count": 0, "ds_format": "*xlsx", "ds_space_res": "--", "ds_time_res": "日", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "a3dd8e0b-fa24-4808-b5f5-7ccd57d6331d.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": "", "ds_serv_phone": "", "ds_serv_mail": "", "doi_value": "", "subject_codes": [ "170.15", "170.45", "170.55" ], "quality_level": 0, "publish_time": "2026-07-07 18:44:24", "last_updated": "2026-07-07 18:56:20", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.heihe.db7601.2026", "i18n": { "en": { "title": "Dataset of Heihe integrated observatory network: Leaf area index of Sidaoqiao superstation, 2025", "ds_format": "*xlsx", "ds_source": "Sidaoqiao in the downstream of the Heihe integrated observatory network", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "This dataset contains the LAI measurements from the Sidaoqiao in the downstream of the Heihe integrated observatory network from May 26 to November 28 in 2025. The site was located in Ejina Banner in Inner Mongolia Autonomous Region. The elevation is 870 m. There are 1 observation samples, around Sidaoqiao superstation (101.1374E, 42.0012N), which is about 30m×30m in size. Five sub-canopy nodes and one above-canopy node are arranged in each sample.\r\nThe data is obtained from LAINet measurements; the four-steps are performed to obtain LAI: the raw data is light quantum (level 0); the daily LAI can be obtained using the software LAInet (level 1); further the invalid and null values are screened and using the 7 days moving averaged method to obtain the processed LAI (level 2); for the multi LAINet nodes observation, the averaged LAI of the nodes area is the final LAI (level 3).\r\nThe released data are the post processed LAI products and stored using *.xls format.\r\nFor more information, please refer to Liu et al. (2018) and Liu et al. (2023).", "ds_time_res": "", "ds_acq_place": "Sidaoqiao Super Station Downstream of the Comprehensive Observation Network for Surface Processes in the Heihe River Basin", "ds_space_res": "", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/by/4.0/", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "belong_to_nieer": false, "ds_topic_tags": [ "黑河流域地表过程综合观测网", "四道桥超级站", "叶面积指数" ], "ds_subject_tags": [ "大气科学", "地理学", "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "下游天然绿洲试验区", "四道桥超级站" ], "ds_time_tags": [ 2025 ], "ds_contributors": [ { "true_name": "刘绍民", "email": "smliu@bnu.edu.cn", "work_for": "北京师范大学", "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": "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" }, { "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": "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" } ], "ds_meta_authors": [ { "true_name": "刘绍民", "email": "smliu@bnu.edu.cn", "work_for": "北京师范大学", "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": "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" }, { "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": "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" } ], "ds_managers": [ { "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" } ], "category": "生态" }