{"id":"44c344e9-5c14-4afb-8bd1-6bdceffff2ca","title":"青藏高原300米分辨率土壤侵蚀强度数据集（1992、2005、2015）","title_en":"Dataset of soil  erosion intensity with 300m resoluton in Tibetan Plateau (1992, 2005, 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":"XDA200402022-QZGY1992A.tif：表示青藏高原地区1992年土壤侵蚀强度栅格数据，其中XDA20040202是子课题编号，2是子子课题编号，QZGY代表青藏高原地区, 1992代表年份A表示土壤侵蚀强度；Geotiff格式，可以采用ArcGIS打开查看和分析.","description":"1）数据内容包含青藏高原地区1992年、2005年、2015年三期土壤侵蚀强度栅格数据，空间分辨率300米。2）土壤侵蚀强度数据采用中国土壤侵蚀预报模型（CSLE）计算获取。土壤侵蚀预报模型公式中包含降雨侵蚀力因子、土壤可蚀性因子、坡长因子、坡度因子、植被覆盖与生物措施因子、工程措施因子、耕作措施因子。降雨侵蚀力因子由青藏高原各站点降雨数据插值获得；土壤可蚀性因子、工程措施因子、耕作措施因子采用第一次水利普查数据；坡长因子、坡度因子通过30m高程数据计算后重采样得到；植被覆盖与生物措施因子由植被覆盖度结合土地利用数据和降雨侵蚀力比例计算得出，其中植被覆盖度是由MODIS的植被指数产品通过像元二分法计算得到。3）通过三期土壤侵蚀强度数据的差异变化比较，符合实际变化规律，数据质量良好。4）土壤侵蚀强度数据对青藏高原土壤侵蚀研究和当地生态系统的可持续发展具有重要意义。","doi":"10.11888/Disas.tpdc.270224","projection":"Albers","language":"zh","share_type":"online","east":105.0,"west":77.0,"south":26.0,"north":44.0,"scale":null,"crs":null,"filesize":951.0,"share_policy":"a","ts_created":"2019-07-29T09:45:15.117474+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-11-02T15:31:09.561277+08:00","time_description":"1992年、2000年、2015年","datas_group":3,"time_description_en":"1992, 2000, 2015","data_format":null,"project":[11,12],"specials":["f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":null,"review_status":5,"review_invite":[{"user_name":"吴锋","username":"simlab3825","email":"wufeng@igsnrr.ac.cn","is_cancel_expert":false},{"user_name":"何思明","username":"何思明","email":"hsm@imde.ac.cn","is_cancel_expert":false}],"review_editor":{"id":21054,"last_login":"2022-04-10T10:49:12.540341+08:00","username":"tingting","email":"panxd@itpcas.ac.cn","is_active":true,"is_staff":true,"user_name":"潘小多"},"data_sources":"","temporal_resolution":"Yearly","spatial_resolution":"m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"44c344e9-5c14-4afb-8bd1-6bdceffff2ca","three_pole":null,"third_pole":"XDA20040202"},"username":"XDA20040202","review_time":"2019-07-29T11:17:12.150728+08:00","protected_duration":0,"protected_describe":null,"is_important":false,"hit_count":3881}