{
    "created": "2026-04-08 17:19:40",
    "updated": "2026-04-09 04:11:43",
    "id": "b934d132-d755-4398-86b5-9c4b980fda81",
    "version": 9,
    "ds_topic": null,
    "title_cn": "三江源、普尔河、育空河流域1960s锁眼卫星水体解译产品",
    "title_en": "Surface water products based on Keyhole satellite about 1960s in The Three River Headwater region, Pul and Yukon River Basins",
    "ds_abstract": "<p>&emsp;&emsp;基于20世纪60年代的锁眼卫星数据，采用面向对象的监督分类，结合人工目视解译修正，生产出水体数据产品。总解译面积64.5万km<sup>2</sup>，占研究区96.28%，其中三江源研究区影像缺失18844 km<sup>2</sup>，阿拉斯加育空流域研究区影像缺失4220 km<sup>2</sup>，西西伯利亚普尔河流域研究区影像缺失1954 km<sup>2</sup>。解译最小线状地物图上宽度大于8米，最小面状地物图上面积大于100平方米，描迹精度2个象元，一级类解译精度达到95%以上。获取的高空间分辨率水体数据产品，为上世纪70年代水体变化研究提供有效数据，也为冻土变化研究提供可靠依据。\n<p>&emsp;&emsp;本数据产品为矢量文件（.shp），可使用Arcgis 10.0以上版本打开。属性表中包含有分类类别（classID:11、12、13，依次对应ClassName：河流、湖泊、冰川。）命名格式为：流域缩写_1960s，三江源（SJY）、普尔河（Sib）、育空河（Yuk）流域，采用UTM-WGS84投影，依次对应N47、N43、N7分区。",
    "ds_source": "<p>&emsp;&emsp;该数据集构建了北半球三大典型冻土区（青藏高原三江源、西西伯利亚普尔河流域和北美育空河流域，总面积64.5万km<sup>2</sup>）相应时期的湖泊分布数据集。精度验证表明，本数据集湖泊面积总体精度达97%，仅漏提取1.9%的小湖塘。该数据集填补了1960年代高分辨率湖泊面积数据空白，可用于冻土–湖泊–气候相互作用及寒区湖泊生态系统评估等研究。",
    "ds_process_way": "<p>&emsp;&emsp;该数据集基于1961—1974年的CORONA-2锁眼卫星高分辨率全色影像（空间分辨率2.7 m），采用面向对象监督分类与人机交互质控相结合的流程，并建立数量—面积双层验证框架对数据质量进行评估，从而形成可复用、可对比的20世纪60年代至70年代初高分辨率湖泊基线数据产品，为冻土区湖泊演变研究与寒区生态水文评估提供可靠的数据支撑。",
    "ds_quality": "<p>&emsp;&emsp;通过“数量一致性—面积精度”两层验证框架进行质量评估：对象级总体解译精度为97.31%，样本湖泊数量一致性准确率为98.1%，面积拟合决定系数，表明其在湖泊识别与面积定量方面具有较高可靠性。",
    "ds_acq_start_time": "1961-01-01 00:00:00",
    "ds_acq_end_time": "1974-12-31 00:00:00",
    "ds_acq_place": "三江源流域,西西伯利亚普尔河流域,阿拉斯加育空河流域",
    "ds_acq_lon_east": 104.0,
    "ds_acq_lat_south": 31.0,
    "ds_acq_lon_west": 72.0,
    "ds_acq_lat_north": 69.0,
    "ds_acq_alt_low": null,
    "ds_acq_alt_high": null,
    "ds_share_type": "open-access",
    "ds_total_size": 212182398,
    "ds_files_count": 2,
    "ds_format": "*.shp",
    "ds_space_res": "",
    "ds_time_res": "",
    "ds_coordinate": "WGS84",
    "ds_projection": "UTM",
    "ds_thumbnail": "b934d132-d755-4398-86b5-9c4b980fda81.png",
    "ds_thumb_from": 2,
    "ds_ref_way": "",
    "paper_ref_way": "",
    "ds_ref_instruction": "",
    "ds_from_station": null,
    "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a",
    "ds_serv_man": "李红星",
    "ds_serv_phone": "0931-4967592",
    "ds_serv_mail": "ncdc@lzb.ac.cn",
    "doi_value": "",
    "subject_codes": [
        "170.45",
        "170.55"
    ],
    "quality_level": 3,
    "publish_time": "2026-04-09 09:34:33",
    "last_updated": "2026-04-09 10:40:33",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": "11738.11.NCDC.HYDRO.DB7298.2026",
    "license": null,
    "i18n": {
        "en": {
            "title_en": "",
            "ds_format_en": "",
            "ds_source_en": "",
            "ds_quality_en": "",
            "ds_ref_way_en": "",
            "ds_abstract_en": "",
            "ds_time_res_en": "",
            "ds_acq_place_en": "",
            "ds_space_res_en": "",
            "ds_projection_en": "",
            "ds_process_way_en": "",
            "ds_ref_instruction_en": ""
        }
    },
    "submit_center_id": "ncdc",
    "data_level": 0,
    "license_type": "CC BY 4.0",
    "ds_topic_tags": [
        "锁眼卫星",
        "水体解译",
        "监督分类",
        "地表水",
        "湖泊",
        "边界",
        "面积"
    ],
    "ds_subject_tags": [
        "地理学",
        "水文学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "三江源流域",
        "西西伯利亚普尔河流域",
        "阿拉斯加育空河流域"
    ],
    "ds_time_tags": [
        1961,
        1962,
        1963,
        1964,
        1965,
        1966,
        1967,
        1968,
        1969,
        1970,
        1971,
        1972,
        1973,
        1974
    ],
    "ds_contributors": [
        {
            "true_name": "徐子昆",
            "email": "xuzikun@nieer.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": "冉有华 ",
            "email": "ranyh@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": "冉有华 ",
            "email": "ranyh@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": "徐子昆",
            "email": "xuzikun@nieer.ac.cn",
            "work_for": "中国科学院西北生态环境资源研究院",
            "country": "中国"
        }
    ],
    "category": "水文"
}