样品采集自４条内流河流域的表层沉积物以及地下30cm的沉积物。所有采样点均位于河流两岸一级阶地以内靠近河流的位置，距离河流1km以内。表层沉积物采样时去除表面1~2cm的表层土。石羊河流域共采集表土样品46×2个（每个采样点均采集表层土壤沉积物和地下30cm的沉积物共两套数据，所以实际采样数为采样点数量的两倍），疏勒河支流石油河共采集表土样品20×2个，黑河支流丰乐河共采集表土样品28×2个，布哈河流域共采集表土样品35×2个。", "ds_source": "
实验数据。", "ds_process_way": "
δ13Corg(‰)和δ18O(‰)值分别采用北京科荟测试技术有限公司的 Flash EA 和 GasBenchII-MAT253plus 质谱仪进行测量。TOC(%)和 TN(%)使用兰州大学化学化工学院分析测试中心的 Vario-III 元素分析仪测定。利用兰州大学西部环境教育部重点实验X'Pert Pro MPD测定了沉积物矿物成分。", "ds_quality": "
δ13Corg(‰)和δ18O(‰)值分析精度分别可达 0.1‰和 0.2‰。TOC(%)和 TN(%)分析误差<0.1%。X'Pert Pro MPD 衍射仪的X射线发生器最大输出功率3kw，最大管压60KV，最大管流60mA；测角仪半径为135-320mm；发散狭缝为固定狭缝。Mastersizer 2000 激光衍射粒度分析仪，测量范围0.02µm - 2000µm；光路为反傅立叶变换光学系统；光源为高稳定性红光主光源、高能量固体蓝光辅助光源；检测器为非均匀交叉排列主检测器，检测角度为0-135度。", "ds_acq_start_time": null, "ds_acq_end_time": null, "ds_acq_place": "祁连山内流河流域", "ds_acq_lon_east": 104.0, "ds_acq_lat_south": 35.0, "ds_acq_lon_west": 92.0, "ds_acq_lat_north": 41.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 85504, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "60608d3b-8b40-456c-9f4a-0b35a0aff841.png", "ds_thumb_from": 0, "ds_ref_way": "李育，祁连山四个内流河表土数据集（0 ka BP），国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2023，doi：10.12072/ncdc.nieer.db2727.2023", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "52109486-75ef-4764-a933-6380c6f42432", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.nieer.db2727.2023", "subject_codes": [ "170.99" ], "quality_level": 3, "publish_time": "2023-02-28 21:37:13", "last_updated": "2023-03-01 11:04:37", "protected": false, "protected_to": "2025-01-01 00:00:00", "lang": "zh", "cstr": "11738.11.ncdc.nieer.db2727.2023", "i18n": { "en": { "title": "Surface soil data sets of four rivers in Qilian Mountains (0 ka BP)", "ds_format": "", "ds_source": "
\n& emsp; Experimental data.", "ds_quality": "
\n& emsp; δ 13Corg (‰) and δ The analytical accuracy of 18O (‰) value can reach 0.1 ‰ and 0.2 ‰ respectively. The analysis error of TOC (%) and TN (%) is less than 0.1%. The maximum output power of X-ray generator of X'Pert Pro MPD diffractometer is 3kw, the maximum pipe pressure is 60KV, and the maximum pipe flow is 60mA; The radius of the goniometer is 135-320mm; The divergent slit is a fixed slit. Mastersizer 2000 laser diffraction particle size analyzer, measuring range 0.02 µ m - 2000 µ m; The optical path is an anti-Fourier transform optical system; The light source is a high stability red light main light source and a high energy solid blue light auxiliary light source; The detector is the main detector with non-uniform cross arrangement, and the detection angle is 0-135 degrees.", "ds_ref_way": "", "ds_abstract": "
& emsp; The samples were collected from the surface sediments of four river basins and the sediments of 30 cm underground. All sampling points are located near the river within the first terrace on both banks of the river, within 1km from the river. When sampling surface sediments, remove 1~2cm of topsoil on the surface. Totally 46 topsoil samples were collected in Shiyang River basin × 2 (two sets of data are collected from each sampling point, including surface soil sediment and sediment 30cm underground, so the actual number of samples is twice the number of sampling points), and 20 topsoil samples are collected from Shiyou River, a tributary of Shule River × 2, Fengle River, a tributary of Heihe River, collected 28 topsoil samples × 2, 35 topsoil samples were collected in the Buha River basin × 2.
", "ds_time_res": "", "ds_acq_place": "Qilian Mountain River Basin", "ds_space_res": "", "ds_projection": "", "ds_process_way": "\n& emsp; δ 13Corg (‰) and δ The 18O (‰) value was measured by the Flash EA and GasBenchII-MAT253plus mass spectrometers of Beijing Kehui Testing Technology Co., Ltd. TOC (%) and TN (%) were determined by the Vario-III element analyzer of the Analysis and Test Center of the School of Chemistry and Chemical Engineering, Lanzhou University. The mineral composition of sediments was determined by X'Pert Pro MPD, a key experiment of the Ministry of Environmental Education in the western part of Lanzhou University.", "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": [ "祁连山", "内流河", "表层沉积物" ], "ds_subject_tags": [ "地球科学其他学科" ], "ds_class_tags": [], "ds_locus_tags": [ "祁连山内流河流域" ], "ds_time_tags": [], "ds_contributors": [ { "true_name": "李育", "email": "liyu@lzu.edu.cn", "work_for": "兰州大学资源环境学院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "张占森", "email": "826872873@qq.com", "work_for": "兰州大学资源环境学院", "country": "中国" } ], "ds_managers": [ { "true_name": "李育", "email": "liyu@lzu.edu.cn", "work_for": "兰州大学资源环境学院", "country": "中国" } ], "category": "其他" }