包括调查点位置信息、经纬度、作物类型、土壤类型、地膜厚度、地膜用量、覆膜年限、覆膜方式、残膜量数据。", "ds_source": "
采用野外样品采集及室内分析等方法获取了不同年龄、不同坡向人工林土壤容重数据。", "ds_process_way": "
残膜样品采集与处理样品采集于2019年6月上季作物收获后、整地前进行。采样地块地理位置信息通过GPS定位仪确定，同时记载该调查地块的归属县区村镇、作物种类、土壤类型、地膜厚度、覆膜年限、覆膜方式等基本信息。本次调查共采集105个样地样本，各县区样本量分别为民乐县20、甘州区20、山丹县25、高台县15、临泽县25。每个调查样地选取3个1 m×1m的样方，在周围铺上帆布，用铁锹将样方表层土（0-20 cm）放入筛子中，边筛土边人工捡拾残留地膜，残膜以肉眼可见为标准，小心清除附在残膜上的土，防止残膜破裂，然后将地膜放入自封袋中并编号，带回实验室后浸泡1 h左右，待残膜表面泥土等物质松散，先人工去除残膜表面的泥土，再用超声波清洗仪清洗残膜10 min，最后将清洗过的残膜在阴凉干燥处晾干并称质量。", "ds_quality": "
为确保量控制，采样前组织调查人员开展培训，统一采样方法，室内测试分析委托中国科学院内陆河流域重点实验室完成，对分析测试数据及时进行电子化处理，审核后入库。", "ds_acq_start_time": "2019-06-01 00:00:00", "ds_acq_end_time": "2019-06-30 00:00:00", "ds_acq_place": "张掖市", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 20808, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "b801506a-4c2e-4e42-9b58-e7cce6d72c64.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "15c097ee-6847-4f6f-8b59-c6a7d5150039", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [], "quality_level": 3, "publish_time": "2024-03-28 09:24:08", "last_updated": "2024-04-23 09:20:06", "protected": true, "protected_to": "2026-03-28 00:00:00", "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB6409.2024", "i18n": { "en": { "title": "Data of plastic film residue in Zhangye City(2019.6)", "ds_format": "", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "年", "ds_acq_place": "Zhangye City", "ds_space_res": "", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "经纬度", "作物类型", "土壤类型", "地膜厚度", "地膜用量", "覆膜年限", "覆膜方式", "残膜量" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "张掖" ], "ds_time_tags": [ 2019 ], "ds_contributors": [ { "true_name": "杨荣", "email": "yangrong@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": "杨荣", "email": "yangrong@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": "杨荣", "email": "yangrong@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" }