{"id":"2b03b3be-a5ac-4c78-8616-8211da674ba8","title":"山王坪次生林观测场土壤理化指标数据集","title_en":"Soil Physical and Chemical Index Dataset of Shanwangping Secondary Forest Observation Site","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":"数据命名格式：\n命名规则为“YYYY.DDD.csv”，其中YYYY代表年份，DDD代表一年某一天。","description":"本数据集的观测生产过程严格遵循土壤样品采集与理化检测规范，由金佛山国家野外站工作人员全程负责实施，核心针对重庆市南川区山王坪次生林观测场，聚焦土壤样品采集、检测及数据整理全流程，确保数据精准、完整、可靠。生产前期，工作人员结合山王坪次生林的群落分布特点，在观测场内科学布设采样点位，采用标准化采样方法分层采集土壤样品，采集后及时封装、标记，严格避免样品污染、失水或理化性质发生改变。后续将采集的土壤样品送至专业实验室，按照规范检测流程，系统测定多项核心指标，包括碱解氮、速效钾、有效磷、全磷、全钾的含量，同时精准检测土壤粒度及碳、氮、硫元素含量。检测过程中严格把控操作标准，对每一组数据进行多次校验、剔除异常值，确保检测精度。","doi":"","projection":"WGS84","language":"zh","share_type":"offline","east":110.2,"west":97.3,"south":21.1,"north":34.4,"scale":null,"crs":null,"filesize":1.0,"share_policy":"c","ts_created":"2026-04-16T14:56:08.264455+08:00","doi_type":"拥有自主知识产权","ts_updated":"2026-04-16T15:23:51.471692+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[10],"specials":[],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"1km - 10km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"2b03b3be-a5ac-4c78-8616-8211da674ba8","three_pole":null,"third_pole":null},"username":"weber","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":20}