{
    "created": "2025-04-22 18:11:09",
    "updated": "2026-05-09 12:45:12",
    "id": "a2835816-3440-4fbf-9c0c-602be458b032",
    "version": 3,
    "ds_topic": null,
    "title_cn": "2002年、2004年塔里木河干流上游流域1：10万土壤盐渍化数据",
    "title_en": "",
    "ds_abstract": "<p>本数据集包含2002年、2004年两期塔里木河干流上游流域(N 40.3°，E 81.5°;N 41.4°，E 84.0°)盐渍化矢量数据。数据以mdb数据库格式存储, 比例尺1：10万，投影方式采用GCS_Xian_1980。该数据反映塔里木河上流因常年灌溉、洪水漫溢等原因导致的土壤盐碱化分布情况。</p>",
    "ds_source": "<ol>2002年和2004年7月下旬TM遥感影像数据</ol>",
    "ds_process_way": "<p>按照土壤盐渍化类型编码对两期（2002,2004）TM遥感影像数据进行预处理和人工解译分类，并加以实地验证和高精度验证所得的结果。</p>",
    "ds_quality": "<p>所得到的解译结果，经过实地验证和高精度验证，误差经过多次修正，验证率高达90%。</p>",
    "ds_acq_start_time": "2013-01-01 00:00:00",
    "ds_acq_end_time": "2013-12-31 00:00:00",
    "ds_acq_place": "塔里木河干流",
    "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": 745240,
    "ds_files_count": 1,
    "ds_format": ".mdb",
    "ds_space_res": "1：10万",
    "ds_time_res": "无",
    "ds_coordinate": "WGS84",
    "ds_projection": "西安1980",
    "ds_thumbnail": "a2835816-3440-4fbf-9c0c-602be458b032.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": "2025-04-22 18:18:16",
    "first_publish_time": null,
    "last_updated": "2025-05-28 17:17:34",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": "33110.11.ariddc.00377",
    "license": null,
    "extra": null,
    "files_shape": [
        {
            "name": "2002年、2004年塔里木河干流上游流域盐渍化矢量数据_数据实体.rar",
            "size": 745240,
            "is_dir": false
        }
    ],
    "features": null,
    "data_level": 0,
    "ds_topic_tags": [
        "土壤盐渍化"
    ],
    "ds_subject_tags": [
        "地理学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "塔里木河干流上游"
    ],
    "ds_time_tags": [
        2002,
        2004
    ],
    "ds_contributors": [
        "方晖"
    ],
    "ds_meta_authors": [
        "方晖"
    ],
    "ds_managers": [
        "李锦",
        "方晖"
    ],
    "category": "土壤"
}