{
    "created": "2025-03-12 16:45:27",
    "updated": "2026-05-09 13:21:38",
    "id": "7aecd827-69d8-472b-b0a6-aedd61037d5f",
    "version": 0,
    "ds_topic": null,
    "title_cn": "2000-2020年咸海流域300米土地利用数据集",
    "title_en": "",
    "ds_abstract": "<p>该数据集包含了咸海流域2000-2020年11年的土地利用栅格数据。该数据集是在欧洲航天局的气候变化倡议土地覆盖地图基础上，经过叠加咸海流域边界矢量数据进行掩膜处理、类别合并，最终得到自然植被、人工植被、水体、裸地、湿地、冰雪、城市与建筑区域7个土地利用类型的一级类数据，WGS-1984坐标系，空间分辨率300米，整体准确率达到80%。</p>",
    "ds_source": "<p>该数据集来源于欧洲航天局的气候变化倡议土地覆盖地图（http://maps.elie.ucl.ac.be/CCI）。</p>",
    "ds_process_way": "<p>在土地覆盖地图的基础上用咸海流域的边界数据进行掩膜处理，提取出咸海流域的土地利用，同时，根据一定的规则进行合并，将原始的二级类数据合并为包含7个土地利用类型的一级类数据，坐标系为：WGS-1984，空间分辨率300米。</p>",
    "ds_quality": "<p>该数据集的整体准确率达到80%。</p>",
    "ds_acq_start_time": null,
    "ds_acq_end_time": null,
    "ds_acq_place": "",
    "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": "离线申请",
    "ds_total_size": 42087483,
    "ds_files_count": 1,
    "ds_format": "栅格数据",
    "ds_space_res": "300",
    "ds_time_res": "年",
    "ds_coordinate": "WGS84",
    "ds_projection": "UTM",
    "ds_thumbnail": "7aecd827-69d8-472b-b0a6-aedd61037d5f.png",
    "ds_thumb_from": 0,
    "ds_ref_way": "",
    "paper_ref_way": "",
    "ds_ref_instruction": "",
    "ds_from_station": null,
    "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6",
    "doi_value": "",
    "subject_codes": [
        "170.45"
    ],
    "quality_level": 1,
    "publish_time": "2025-03-25 20:57:54",
    "first_publish_time": null,
    "last_updated": "2025-04-01 15:47:01",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": "33110.11.ariddc.00315",
    "license": null,
    "extra": null,
    "files_shape": [
        {
            "name": "2000-2020年咸海流域300米土地利用数据.rar",
            "size": 42087483,
            "is_dir": false
        }
    ],
    "features": null,
    "data_level": 0,
    "ds_topic_tags": [
        "土地利用",
        "土地覆被"
    ],
    "ds_subject_tags": [
        "地理学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [],
    "ds_time_tags": [
        2000,
        2001,
        2002,
        2003,
        2004,
        2005,
        2006,
        2007,
        2008,
        2009,
        2010,
        2011,
        2012,
        2013,
        2014,
        2015,
        2016,
        2017,
        2018,
        2019,
        2020
    ],
    "ds_contributors": [
        "刘铁",
        "钱静"
    ],
    "ds_meta_authors": [
        "钱静",
        "刘铁"
    ],
    "ds_managers": [
        "刘铁"
    ],
    "category": "遥感再分析数据"
}