本数据集为2000-2012年黑河流域范围1公里的LAI产品。数据详细信息如下：\n图像格式：tif\n图像大小：每景1M左右\n时间范围：2000-2012年\n时间分辨率：8天\n空间分辨率：1km\n叶面指数LAI(Leaf Area Index)是指一定土地面积上植物叶面面积总和与土地面积之比，是描述植被冠层结构的最基本的参量之一。LAI控制植被的各种生物、物理过程，如光合作用、呼吸作用、植被蒸腾、碳循环和降雨截留，是陆面过程中一个重要的结构参数。表征绿色植被时空变化的LAI可以通过卫星遥感资料进行反演。
", "ds_source": "算法首先采用冠层BRDF模型，将冠层反射率表示为LAI/FAPAR、波长、土壤和叶片反射率、聚集指数、入射和观测角度等一系列参数的函数。针对几个关键参数建立了参数表作为反演的输入。几个关键参数建立了参数表作为反演的输入。然后输入经过预处理的地表反射率数据和土地覆盖数据，用查找表（LUT）法反演得到LAI产品。详细算法参见参考文献。
", "ds_process_way": "几个关键参数建立了参数表作为反演的输入。然后输入经过预处理的地表反射率数据和土地覆盖数据，用查找表（LUT）法反演得到LAI产品。详细算法参见参考文献。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2012-01-01 00:00:00", "ds_acq_place": "黑河流域", "ds_acq_lon_east": 102.9213888888889, "ds_acq_lat_south": 37.74, "ds_acq_lon_west": 97.36527777777778, "ds_acq_lat_north": 42.689166666666665, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 28378063, "ds_files_count": 2, "ds_format": "TIF", "ds_space_res": null, "ds_time_res": "分、日、次", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "666ddcce-f5ec-4d1f-8184-67fb6a894f27.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "None", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596 ", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2021-01-21 11:02:08", "last_updated": "2023-08-23 17:03:29", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1700", "i18n": { "en": { "title": "1 km Lai products in Heihe River Basin, 2000-2012", "ds_format": "", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "This data set is the Lai product of 1 km in Heihe River Basin from 2000 to 2012. Data details are as follows:\nImage format: TIF\nImage size: about 1m per scene\nTime range: 2000-2012\nTime resolution: 8 days\nSpatial resolution: 1km\nLeaf area index (LAI) refers to the ratio of the total leaf area of plants to the land area in a certain land area. It is one of the most basic parameters to describe the canopy structure of vegetation. Lai controls various biological and physical processes of vegetation, such as photosynthesis, respiration, transpiration, carbon cycle and rainfall interception. It is an important structural parameter in land surface processes. Lai can be retrieved from satellite remote sensing data.
", "ds_time_res": "分、日、次", "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": [ "冠层BRDF模型", "土壤和叶片反射率", "LAI", "BRDF", "叶面积指数" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "上中下游", "黑河流域", "全流域" ], "ds_time_tags": [ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 ], "ds_contributors": [ { "true_name": "范闻捷", "email": "fanwj@pku.edu.cn", "work_for": "北京大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "范闻捷", "email": "fanwj@pku.edu.cn", "work_for": "北京大学", "country": "中国" } ], "ds_managers": [ { "true_name": "黑河计划数据管理中心", "email": "westdc@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" }, { "true_name": "范闻捷", "email": "fanwj@pku.edu.cn", "work_for": "北京大学", "country": "中国" } ], "category": "生态" }