{
    "created": "2025-06-12 16:11:11",
    "updated": "2026-05-09 14:31:10",
    "id": "7e6b8894-b1f4-4a52-a284-e09aca8be364",
    "version": 0,
    "ds_topic": null,
    "title_cn": "伊吾绿洲、水系、流域（山区）及高程分类数据集",
    "title_en": "",
    "ds_abstract": "<p>伊吾绿洲位于新疆维吾尔自治区哈密市伊吾县境内。它由13个分散的小片绿洲组成，地理位置是43°02′53″N-43°51′31″N, 94°05′46″E-95°20′56″E。绿洲总面积为499.00 km²（Albers投影），总周长为481.13 km（Lambert投影）。其中，最大绿洲的面积为283.11 km²，周长为183.93 km。滋养伊吾绿洲的河流主要有阿勒吞昆多河、伊吾河、吐尔干河，它们的干流长度分别为76.44 km、49.97 km、35.47 km。伊吾诸河流域山区部分的地理位置是42°58′35″N-43°39′58″N，93°46′05″E-94°53′50″E。它的面积为3203.69 km²，是伊吾绿洲总面积的6.4倍。伊吾诸河流域山区部分根据高程共划分为9类。该数据集基于2020年Google Earth米级分辨率影像，结合ASTER GDEM 30 m数据和实测数据研发得到。数据集内容包括：（1）伊吾绿洲边界数据；（2）滋养绿洲的水系数据；（3）伊吾诸河流域山区部分的边界数据；（4）伊吾诸河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62个数据文件组成，数据量为7.88 MB（压缩为5个文件，5.31 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": 5568740,
    "ds_files_count": 5,
    "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": "7e6b8894-b1f4-4a52-a284-e09aca8be364.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 18:37:26",
    "first_publish_time": null,
    "last_updated": "2025-06-12 18:37:26",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": null,
    "license": null,
    "extra": null,
    "files_shape": [
        {
            "name": "MontPartofYiwuRiverCatchment.kmz",
            "size": 360121,
            "is_dir": false
        },
        {
            "name": "TuolekuleLake.kmz",
            "size": 145895,
            "is_dir": false
        },
        {
            "name": "YiwuOasis.kmz",
            "size": 1128775,
            "is_dir": false
        },
        {
            "name": "YiwuOasisRiversCatchmentEVC.rar",
            "size": 3206323,
            "is_dir": false
        },
        {
            "name": "YiwuRiverSystem.kmz",
            "size": 727626,
            "is_dir": false
        }
    ],
    "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": [
        "新疆",
        "伊吾河",
        "阿勒吞昆多河",
        "吐尔干河"
    ],
    "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"
}