{
    "created": "2025-06-12 18:28:35",
    "updated": "2026-05-09 18:45:19",
    "id": "e522fbcc-ba21-45bb-acb9-bb3be9bdecd5",
    "version": 2,
    "ds_topic": null,
    "title_cn": "阳关绿洲、水系和流域（山区）高程分类数据集",
    "title_en": "",
    "ds_abstract": "<p>阳关绿洲（Yangguan Oasis）位于甘肃省酒泉市敦煌市与阿克塞哈萨克族自治县。阳关绿洲的地理位置是39°34′00″N-40°07′32″N，93°58′47″E-94°21′45″E。阳关绿洲由15块绿洲组成，总面积为83.18 km²（Albers）。其中，最大的绿洲面积为40.80 km²。滋养阳关绿洲的河流主要有圈槽渠、沙沟与东沟，它们的干流长度分别为124.58 km、112.62 km与59.05 km。阳关流域山区部分的地理位置39°15′17″N-39°28′54″N，93°50′13″E-94°34′15″E。该流域山区部分面积为819.00 km²。该流域山区部分高程被划分为7类。该数据集内容包括：（1）绿洲边界数据；（2）滋养绿洲的水系数据；（3）流域山区部分的边界数据；（4）流域山区部分高程分类数据。数据集以.kmz、.shp与.tif数据格式存储，由49个数据文件组成，数据量为9.96 MB（压缩为4个文件，3.82 MB）。</p>",
    "ds_source": "<p>基于2020年Google earth影像、ASTER GDEM 30 m数据，结合实测数据。</p>",
    "ds_process_way": "",
    "ds_quality": "",
    "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": "在线下载",
    "ds_total_size": 0,
    "ds_files_count": 0,
    "ds_format": ".kmz、.shp与.tif数据格式",
    "ds_space_res": "无",
    "ds_time_res": "无",
    "ds_coordinate": "WGS84",
    "ds_projection": "WGS84",
    "ds_thumbnail": "e522fbcc-ba21-45bb-acb9-bb3be9bdecd5.jpg",
    "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": "2025-06-12 18:37:06",
    "first_publish_time": null,
    "last_updated": "2025-06-12 18:37:06",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": null,
    "license": null,
    "extra": null,
    "files_shape": [],
    "features": null,
    "data_level": 0,
    "ds_topic_tags": [
        "数据大百科",
        "流域",
        "水系",
        "高程",
        "DEM"
    ],
    "ds_subject_tags": [
        "地理学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "圈槽渠",
        "酒泉",
        "敦煌市",
        "甘肃省"
    ],
    "ds_time_tags": [
        2020
    ],
    "ds_contributors": [
        "桂东伟",
        "李伯騛"
    ],
    "ds_meta_authors": [
        "桂东伟"
    ],
    "ds_managers": [
        "李锦"
    ],
    "category": "水文"
}