{
    "created": "2025-04-22 16:49:51",
    "updated": "2026-05-09 12:46:01",
    "id": "7eb8498a-a2fa-4059-ae5c-f2fafd6b0385",
    "version": 2,
    "ds_topic": null,
    "title_cn": "2018年咸海流域0.45米耕地数据",
    "title_en": "",
    "ds_abstract": "<p>本数据包含阿姆河流域Kashka darya, Zarafshan, Amu Bukhara, Amu Surkhan darya, 锡尔河流域Naryn, Qyzylorda, Kazalinskiy, Zhanakorganskiy, South Kazakhstan耕地矢量数据。空间分辨率为0.45m×0.45m，WGS-1984坐标系。</p>",
    "ds_source": "<p>谷歌卫星影像数据.</p>",
    "ds_process_way": "<p>原始卫星影像来源于美国谷歌地球，使用Bigmap商业软件下载获得，为了获得高分辨率下的无云影像，谷歌地球采用拼接方法将不同年份的数据整合到一起，因此下载的影像数据时间跨度为2016-2019年。使用机器识别方法预测出地块边界，将边界转为矢量数据，之后再将结果与谷歌影像叠加，由人工逐个检查修改错误信息，得到咸海流域耕地数据。最终结果采用WGS-1984坐标系。</p>",
    "ds_quality": "<p>空间分辨率为0.45m×0.45m，准确率达90.32%，投影坐标为GCS_WGS_1984。</p>",
    "ds_acq_start_time": "2018-01-01 00:00:00",
    "ds_acq_end_time": "2018-12-31 00:00:00",
    "ds_acq_place": "咸海流域",
    "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": 631983114,
    "ds_files_count": 2,
    "ds_format": "shp",
    "ds_space_res": "0.45",
    "ds_time_res": "无",
    "ds_coordinate": "WGS84",
    "ds_projection": "WGS84",
    "ds_thumbnail": "7eb8498a-a2fa-4059-ae5c-f2fafd6b0385.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": "2025-04-22 17:27:10",
    "first_publish_time": null,
    "last_updated": "2025-05-28 17:44:22",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": "33110.11.ariddc.00370",
    "license": null,
    "extra": null,
    "files_shape": [
        {
            "name": "Amu Darya.rar",
            "size": 532928038,
            "is_dir": false
        },
        {
            "name": "Syr Darya.rar",
            "size": 99055076,
            "is_dir": false
        }
    ],
    "features": null,
    "data_level": 0,
    "ds_topic_tags": [
        "耕地"
    ],
    "ds_subject_tags": [
        "地理学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "咸海"
    ],
    "ds_time_tags": [
        2018
    ],
    "ds_contributors": [
        "钱静",
        "刘铁",
        "陈朝亮"
    ],
    "ds_meta_authors": [
        "陈朝亮"
    ],
    "ds_managers": [
        "刘铁"
    ],
    "category": "土地利用/土地覆被"
}