该数据集为中国西北地区青海省2005年的1:70万土地覆被数据。数据采用一个分层的土地覆被分类系统，分类系统的一级类与IPCC系统保持一致共6类（林地、草地、湿地、耕地、人工表面、其他），二级类采用了由FAO的LCCS生成的具有全球统一代码的38个类型。
", "ds_source": "主要数据源有：1．2005年代土地利用数据 2．与土地利用数据同期陆地卫星精纠正分县假彩色合成影像 3．辅助数据包括1:50万草地资源图（矢量）、1:100万土壤类型图（矢量）、1:100万植被类型图（扫描）等。
", "ds_process_way": "基于eCognition软件平台，采用面向对象分类方法
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2005-01-01 00:00:00", "ds_acq_end_time": "2005-12-31 00:00:00", "ds_acq_place": "青海省", "ds_acq_lon_east": 103.19972222222222, "ds_acq_lat_south": 31.116666666666667, "ds_acq_lon_west": 89.5, "ds_acq_lat_north": 39.2, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 61674630, "ds_files_count": 3, "ds_format": "SHP", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "cc2f63b7-6cc6-436d-b8ba-784b2d224965.jpg", "ds_thumb_from": 2, "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": [ "170.4510" ], "quality_level": 3, "publish_time": "2021-01-12 09:51:19", "last_updated": "2023-06-19 15:37:54", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.nieer.2020.1488", "i18n": { "en": { "title": "1:700000 land cover data set of Qinghai Province in 2005", "ds_format": "SHP", "ds_source": "The main data sources are as follows: 1. Land use data in 2005; 2. False color synthetic images of counties accurately corrected by Landsat in the same period of land use data; 3. Auxiliary data include 1:500000 grassland resource map (vector), 1:1000000 soil type map (vector), 1:1000000 vegetation type map (scan), etc
", "ds_quality": "The data quality is good
", "ds_ref_way": "", "ds_abstract": "The data set is 1:700000 land cover data of Qinghai Province in Northwest China in 2005. A hierarchical land cover classification system is used for the data. The first level of the classification system is consistent with the IPCC system, including 6 categories (woodland, grassland, wetland, cultivated land, artificial surface and others). The second level of the classification system adopts 38 types with global uniform code generated by FAO's LCCs.
", "ds_time_res": "年", "ds_acq_place": "Qinghai Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Based on ecognition software platform, object-oriented classification method is adopted
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC 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, "ds_topic_tags": [ "土地利用", "土地覆被", "基础地理" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "青海省", "西北地区" ], "ds_time_tags": [ 2005 ], "ds_contributors": [ { "true_name": "颜长珍", "email": "yancz@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": "谢家丽", "email": "xiejl@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": "谢家丽", "email": "xiejl@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": "颜长珍", "email": "yancz@lzb.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" }