本数据集包含研究区1992、2001、2010和2020年土地利用/土地覆被（LU/LC）分类数据。采用随机森林方法对经过预处理的遥感影像进行分类，将土地利用类型划分为建设用地、植被、水体和裸地4类。每个类别随机选取200个地面验证点，并结合Google Earth同期或邻近时期影像开展精度验证，采用总体精度、用户精度和生产者精度评价分类结果，四期分类结果综合总体精度达到92%，表明分类结果具有较高可靠性。", "ds_source": "", "ds_process_way": "", "ds_quality": "", "ds_acq_start_time": "1992-01-01 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "雅库茨克", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 286974, "ds_files_count": 0, "ds_format": "*.tif", "ds_space_res": "30 m", "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "38968332-51bc-4c1f-b724-f1936e7ab45b.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "None", "ds_from_station": null, "organization_id": "4b0eedbd-dbac-4d31-8225-4b9120866ee1", "ds_serv_man": null, "ds_serv_phone": null, "ds_serv_mail": null, "doi_value": "", "subject_codes": [ "170", "420" ], "quality_level": 0, "publish_time": "2026-09-10 10:07:13", "last_updated": "2026-09-10 10:15:26", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.db7786.2026", "i18n": { "en": { "title": "Land Use Data for Yakutsk in 1992, 2001, 2010, and 2020", "ds_format": "*.tif", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "
This dataset contains land use/land cover (LU/LC) classification data for the study area in 1992, 2001, 2010 and 2020. The random forest method was used to classify the preprocessed remote sensing images, and the land use types were divided into four categories: construction land, vegetation, water body and bare land. 200 ground verification points were randomly selected for each category and combined with Google Earth images in the same period or adjacent periods for accuracy verification. The classification results were evaluated using overall accuracy, user accuracy and producer accuracy. The overall accuracy of the four-phase classification results reached 92%, indicating that the classification results are highly reliable.", "ds_time_res": "years", "ds_acq_place": "Yakutsk", "ds_space_res": "30 m", "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, "allow_update_data": false, "ds_topic_tags": [ "多年冻土", "土地利用", "雅库茨克", "城市化" ], "ds_subject_tags": [ "地球科学", "测绘科学技术" ], "ds_class_tags": [], "ds_locus_tags": [ "西伯利亚", "雅库茨克" ], "ds_time_tags": [ 1992, 2001, 2010, 2020 ], "ds_contributors": [ { "true_name": "李向龙", "email": "alex@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" }, { "true_name": "张泽", "email": "zez@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" }, { "true_name": "闫庆凯", "email": "yanqingkai@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" }, { "true_name": "张圣嵘", "email": "zhangshengrong@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "李向龙", "email": "alex@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" }, { "true_name": "张泽", "email": "zez@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" }, { "true_name": "闫庆凯", "email": "yanqingkai@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" }, { "true_name": "张圣嵘", "email": "zhangshengrong@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" } ], "ds_managers": [ { "true_name": "李向龙", "email": "alex@nefu.edu.cn", "work_for": "东北林业大学", "country": "中国" } ], "category": "冻土" }