该数据集包含了2025年5月26日至2025年11月30日的黑河水文气象观测网下游混合林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，下垫面是胡杨与柽柳混合。观测在混合林站（101.1335E, 41.9903N）旁开展，样方大小约30m×30m，样方内布设5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混合林站
", "ds_process_way": "", "ds_quality": "", "ds_acq_start_time": "2025-05-26 00:00:00", "ds_acq_end_time": "2025-11-30 00:00:00", "ds_acq_place": "", "ds_acq_lon_east": 101.13333333333334, "ds_acq_lat_south": 41.99027777777778, "ds_acq_lon_west": 101.13333333333334, "ds_acq_lat_north": 41.99027777777778, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 12393, "ds_files_count": 0, "ds_format": "*xlsx", "ds_space_res": "--", "ds_time_res": "日", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "8cbbfbab-765e-4913-9f7f-d0a6a11e76c7.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 18:42:07", "last_updated": "2026-07-07 18:55:27", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.heihe.db7603.2026", "i18n": { "en": { "title": "Dataset of Heihe integrated observatory network: Leaf area index of Mixed forest station, 2025", "ds_format": "*xlsx", "ds_source": "Mixed forest station in the downstream of the Heihe integrated observatory network", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "This dataset contains the LAI measurements from the Mixed forest in the downstream of the Heihe integrated observatory network from May 26 to November 30 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 Mixed forest station (101.1335E, 41.9903N), which is about 30 m×30 m 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).\r\n缩略图", "ds_time_res": "", "ds_acq_place": "", "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", "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" ], "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": "屈永华", "email": "qyh@bnu.edu.cn", "work_for": "北京师范大学", "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": "屈永华", "email": "qyh@bnu.edu.cn", "work_for": "北京师范大学", "country": "中国" } ], "ds_managers": [ { "true_name": "屈永华", "email": "qyh@bnu.edu.cn", "work_for": "北京师范大学", "country": "中国" } ], "category": "生态" }