{"id":"b72ea9fe-ffb8-4ea6-a8de-e3442fa88054","title":"新疆维吾尔自治区22个小流域2.5米分辨率土壤水蚀模数数据集（2019）","title_en":"Dataset of soil water erosion modulus with 2.5 m resolution in 22 watersheds of the Xinjiang Uygur Autonomous Region（2019）","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":"文件命名：以tif栅格形式存储，XDA200402021-CSLE_Axinjiang01.tif：表示抽样单元土壤水蚀模数，其中XDA20040202是子课题编号，1是子子课题编号，CSLE是中国土壤流失方程，A表示土壤侵蚀模数，xinjiang01代表抽样单元编号。\n数据读取方式：可以采用ArcGIS、ENVI、erdas等软件打开。","description":"1)数据内容包括2019年新疆维吾尔自治区22个小流域2.5米分辨率土壤水蚀模数数据集（2019年），数据单位为t/(hm2·a)。2）采用中国土壤侵蚀模型CSLE (A=R•K•LS•B•E•T)方法，在面图层降雨侵蚀力R、土壤可蚀性K、坡度坡长因子LS、植被盖度FVC、轮作分区抽样调查单元的基础上，分别计算22个抽样单元土壤水蚀模数，评估土壤侵蚀状况。通过空间数据运算（包括图表链接及转换、矢栅转换、重采样等），将区域专题图降雨侵蚀力、土壤可蚀性、DEM转换为抽样单元的R、K、LS因子；通过半月FVC、NPV、半月降雨侵蚀力权重、其他地类B因子表分别计算抽样单元内各地类的B因子；通过遥感解译结果、工程措施因子表，计算抽样单元工程措施因子值；通过耕作分区图及耕作措施表获取抽样单元内耕作因子值，进而计算各抽样单元内土壤侵蚀模数。22个小流域的选取依据泛第三极地区抽样单元布设图。 3）通过和同年同区域已有土壤侵蚀强度数据对比，无明显差异，数据质量良好。4）土壤侵蚀模数数据对研究泛第三极土壤侵蚀现状，更好的贯彻“一带一路”发展政策具有重要的意义。","doi":"10.11888/Disas.tpdc.270450","projection":"WGS84","language":"zh","share_type":"offline","east":87.88328,"west":85.747743,"south":42.665961,"north":43.942443,"scale":null,"crs":null,"filesize":14.5,"share_policy":"b","ts_created":"2020-01-09T08:30:55.574737+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T16:47:48.653127+08:00","time_description":"2019年","datas_group":0,"time_description_en":"2019","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"何思明","username":"何思明","email":"hsm@imde.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"<= 1 m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"b72ea9fe-ffb8-4ea6-a8de-e3442fa88054","three_pole":null,"third_pole":"XDA20040202"},"username":"XDA20040202","review_time":"2020-01-25T02:39:58.491416+08:00","protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":2709}