{
    "created": "2025-10-29 17:57:55",
    "updated": "2026-05-09 12:45:59",
    "id": "bf434d17-4313-42ea-9620-3291d081f09f",
    "version": 4,
    "ds_topic": null,
    "title_cn": "新疆10m叶面积指数数据集（2022年4-10月）",
    "title_en": "",
    "ds_abstract": "<p>本数据为利用sentinel2号反射率产品数据进行进一步加工，其中原始数据为全疆10米月度哨兵二号反射率镶嵌数据集，叶面积指数数据通过机器学习进行提取，质量控制主要采用全疆2020-2021年叶面积实测数据进行模型构建和验证。</p>",
    "ds_source": "<p>哨兵二号反射率数据主要来源为欧空局下载。其余辅助数据来源为实地测量数据，自主产生。</p>",
    "ds_process_way": "<p>用于本模型计算的叶面积指数通过lai2000测量仪器在样地内进行5点法平均采集。本数据集通过随机森林进行叶面积指数的反演的计算。数据分辨率为10m。其中随进森林算法的训练样本包括由吐鲁番哈密地区，艾比湖流域，南疆塔里木河流域北缘的实测数据集，数据采样仪器为LAI2000和Sunscan。</p>",
    "ds_quality": "<p> 质量控制主要采用全疆2020-2022年叶面积实测数据进行模型构建和验证。本数据集在农作物和草地等误差不超过20%。</p>",
    "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": 1443791205154,
    "ds_files_count": 32,
    "ds_format": "栅格",
    "ds_space_res": "10米",
    "ds_time_res": "月",
    "ds_coordinate": "WGS84",
    "ds_projection": "CGCS2000",
    "ds_thumbnail": "bf434d17-4313-42ea-9620-3291d081f09f.jpg",
    "ds_thumb_from": 0,
    "ds_ref_way": "",
    "paper_ref_way": "",
    "ds_ref_instruction": "数据来源引用：新疆10m叶面积指数数据集（2022年4-10月）来源于第三次新疆综合科学考察专项 \"空天地网一体化综合科考监测体系建设(2021xjkk1400)\"",
    "ds_from_station": null,
    "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6",
    "doi_value": "",
    "subject_codes": [
        "170.40"
    ],
    "quality_level": 1,
    "publish_time": "2025-12-04 18:58:27",
    "first_publish_time": null,
    "last_updated": "2026-01-14 11:22:50",
    "protected": false,
    "protected_to": "2025-10-31 00:00:00",
    "lang": "zh",
    "cstr": "33110.11.XIEG.xjsedata.2022.00000128",
    "license": null,
    "extra": null,
    "files_shape": [
        {
            "name": "2021xjkk1400-70-2023031070",
            "size": null,
            "is_dir": true
        }
    ],
    "features": null,
    "data_level": 0,
    "ds_topic_tags": [
        "叶面积指数"
    ],
    "ds_subject_tags": [
        "地图学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "新疆"
    ],
    "ds_time_tags": [
        2022
    ],
    "ds_contributors": [
        "刘铁",
        "马勇刚"
    ],
    "ds_meta_authors": [
        "马勇刚"
    ],
    "ds_managers": [
        "李锦"
    ],
    "category": "哨兵"
}