{"id":"7cbefbce-b57f-4713-a554-e9e9a325bb16","title":"土壤相对湿度干旱指数数据集（2014-2015年）","title_en":"Dataset of soil relative humidity and drought index in 2014-2015","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"ENVI标准格式(.dat)，可以采用ARCGIS、ENVI打开查看","description":"在全球变暖的背景下，干旱发生的频率和强度呈增加趋势，由于干旱灾害所引发的水资源匮乏、粮食危机、生态恶化（如荒漠化）等，直接威胁到国家的粮食安全和社会经济发展，干旱灾害风险评估及应急管理的技术水平亟待提高。“一带一路”沿线区域生态环境脆弱、农业耕地集中、干旱灾害频繁，利用遥感卫星监测大区域的干旱水平及其时空变化，对于科学掌握“一带一路”地区的干旱格局、区域分异特征，及其对农业耕地的影响具有重要的科学和现实意义。土壤相对湿度指数是表征土壤干旱的指标之一，是土壤相对湿度与田间持水量的比值，能直接反映作物可利用水分的状况。土壤湿度数据由SMAP遥感土壤水分数据产品通过降尺度方法得到，田间持水量数据来源于世界土壤数据库(HWSD)。详细计算公式与方法可参见：《农业干旱等级国家标准》标准号：GB/T 32136-2015。数据覆盖一带一路沿线34个关键节点区域。","doi":"","projection":"","language":"zh","share_type":"online","east":180.0,"west":12.0,"south":-11.0,"north":82.0,"scale":20000,"crs":null,"filesize":11000.0,"share_policy":"a","ts_created":"2020-01-29T12:58:16.768725+08:00","doi_type":"国际公开共享数据","ts_updated":"2021-04-19T10:17:13.259334+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":["f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":null,"review_status":5,"review_invite":[{"user_name":"冉有华","username":"ryh","email":"ranyh@lzb.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42023,"last_login":"2022-03-24T09:37:33.507049+08:00","username":"yanmh","email":"yanmh@itpcas.ac.cn","is_active":true,"is_staff":true,"user_name":"闫梦还"},"data_sources":null,"temporal_resolution":"Monthly","spatial_resolution":"100m - 1km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"7cbefbce-b57f-4713-a554-e9e9a325bb16","three_pole":null,"third_pole":"XDA20030302"},"username":"XDA20030302","review_time":"2020-01-29T13:11:28.339901+08:00","protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":1374}