{ "created": "2025-01-20 16:04:26", "updated": "2026-04-29 01:11:52", "id": "098814d4-2b0b-46f9-9e27-1d6becf30868", "version": 9, "ds_topic": null, "title_cn": "中国灌溉耕地年度分布图（2000 - 2020 年）", "title_en": "CIrrMap250: Annual maps of China’s irrigated cropland from 2000 to 2020", "ds_abstract": "

  本数据集通过整合遥感数据（即植被指数、杂交耕地产品和水田图）、灌溉统计和调查以及灌溉适宜性地图，绘制了2000年至2020年中国灌溉耕地年度图。新开发的地图（CIrrMap250）的空间分辨率为 250 米，从 2000 年到 2020 年每年绘制一次。

", "ds_source": "

  1、遥感数据（即植被指数、杂交耕地产品和水田图）；

\n

  2、灌溉统计和调查以及灌溉适宜性地图。

", "ds_process_way": "

  通过整合遥感数据、统计数据和相关地图得到最后的数据。

", "ds_quality": "

  像素大小为 0.00225 × 0.00225 度（赤道上约为 250 米 × 250 米）。地图显示了每个 250 米像素中被灌溉耕地覆盖的百分比（即像素值 = 灌溉面积/像素面积 ×100）。

", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2021-12-31 00:00:00", "ds_acq_place": "中国", "ds_acq_lon_east": 135.01666666666668, "ds_acq_lat_south": 3.8666666666666667, "ds_acq_lon_west": 73.66666666666667, "ds_acq_lat_north": 53.5, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 2750276804, "ds_files_count": 22, "ds_format": "tiff", "ds_space_res": "250", "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "098814d4-2b0b-46f9-9e27-1d6becf30868.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "0a4269e1-65f4-45f1-aeba-88ea3068eebf", "ds_serv_man": "敏玉芳", "ds_serv_phone": "09314967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4599" ], "quality_level": 3, "publish_time": "2025-01-24 10:09:14", "last_updated": "2026-01-14 10:49:02", "protected": false, "protected_to": null, "lang": "zh", "cstr": null, "i18n": { "en": { "title": "CIrrMap250: Annual maps of China’s irrigated cropland from 2000 to 2020", "ds_format": "tiff", "ds_source": "

  1. Remote sensing data (i.e. vegetation indices, hybrid cultivated land products, and paddy field maps);

\n

  2. Irrigation statistics and surveys, as well as irrigation suitability maps.", "ds_quality": "

  The pixel size is 0.00225 × 0.00225 degrees (approximately 250 meters × 250 meters on the equator). The map displays the percentage of irrigated farmland coverage in each 250 meter pixel (i.e. pixel value=irrigated area/pixel area x 100).", "ds_ref_way": "", "ds_abstract": "

  This dataset integrates remote sensing data (i.e. vegetation indices, hybrid cultivated land products, and paddy field maps), irrigation statistics and surveys, and irrigation suitability maps to create annual maps of irrigated cultivated land in China from 2000 to 2020. The newly developed map (CIrrMap250) has a spatial resolution of 250 meters and was drawn annually from 2000 to 2020.

", "ds_time_res": "年", "ds_acq_place": "China", "ds_space_res": "250", "ds_projection": "", "ds_process_way": "

  Obtain the final data by integrating remote sensing data, statistical data, and relevant maps.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_outside", "cstr_reg_from": "reg_outside", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "灌溉" ], "ds_subject_tags": [ "地理学其他学科" ], "ds_class_tags": [], "ds_locus_tags": [ "中国" ], "ds_time_tags": [ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 ], "ds_contributors": [ { "true_name": "张凌", "email": "zhanglingky@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": "张凌", "email": "zhanglingky@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": "张凌", "email": "zhanglingky@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "其他" }