本数据集包含了小麦地（6个样）、大麦地、青稞地、玉米地及小米地五种农田样地类型和云杉林（3个样）、高山草甸（2个样）及湿地三种自然样地及东灰山考古遗址（2个）的表层土样，以及小麦、大麦、青稞和冰草的花药。采用统一的前处理方法，测量禾本科花粉的最大直径，并按2.5um为固定间隔将粒径划分为43个粒径区间，并计算每个样品在各个粒径区间内的百分含量，从而确定不同类型禾本科花粉粒径的分布范围。
\n\n数据集包含包含2个表：（1）不同类型禾本科花粉粒径原始数据 （2）不同类型禾本科花粉粒径百分比数据
", "ds_source": "<数据采集地点西北干旱区黑河流域上游地区的小麦地、大麦地等多种类型农田和云杉林、高山草甸等自然植被带，以及农田中农作物花药和荒地杂草花药
", "ds_process_way": "本数据表是由专人根据记录本手工录入
\n\n算法和模型介绍: 不同禾本科花粉分布频率：不同样品/样点各个粒径区间统计到的禾本科花粉数量除以所有测量的禾本科花粉数量再乘以100%。
", "ds_quality": "(1)数据生产过程: 采用氢氟酸过筛法进行前处理，在Nikon显微镜下统计，经EXCEL计算得到百分比含量。根据不同种属的禾本科花粉粒径分布范围并结合其它指标可以揭示农业活动对环境变化的影响，也可以应用到考古遗址中反映农业栽培历史，在加工生成数据表时，剔除了一些明显误差数据。
", "ds_acq_start_time": "2011-01-01 00:00:00", "ds_acq_end_time": "2012-12-31 00:00:00", "ds_acq_place": "黑河流域", "ds_acq_lon_east": 101.43, "ds_acq_lat_south": 37.830000000000005, "ds_acq_lon_west": 99.5, "ds_acq_lat_north": 38.980000000000004, "ds_acq_alt_low": 1463.0, "ds_acq_alt_high": 3282.0, "ds_share_type": "apply-access", "ds_total_size": 65024, "ds_files_count": 3, "ds_format": "Excel表格", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "c81cd997-137f-46b3-b227-f845176d7f57.png", "ds_thumb_from": 0, "ds_ref_way": "黄小忠，黑河流域不同类型禾本科花粉粒径数据集（2011-2012），国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.973Desert.db0019.2020", "paper_ref_way": "", "ds_ref_instruction": "参考文献: 黄小忠, 赵艳等. 新疆博斯腾湖表层沉积物的孢粉分析[J]. 冰川冻土, 2004, 26 (5) : 602-609.", "ds_from_station": null, "organization_id": "eb2b3ac4-919d-433d-b987-bcee1ae83c9e", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2021-01-05 13:08:42", "last_updated": "2021-01-05 13:08:42", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.973Desert.2020.148", "i18n": { "en": { "title": "Pollen size data sets of different Gramineae in Heihe River Basin (2011-2012)", "ds_format": "", "ds_source": "< data collection location: wheat field, barley field and other types of farmland, spruce forest, alpine meadow and other natural vegetation zones, as well as crop anthers and weed anthers in wasteland in the upper reaches of Heihe River Basin, northwest arid region
", "ds_quality": "(1) Data production process: the hydrofluoric acid screening method was used for pretreatment, and the percentage content was calculated by Excel under Nikon microscope. According to the distribution range of grain size of Gramineae pollen of different species and genera, combined with other indicators, we can reveal the impact of agricultural activities on environmental changes, and can also be applied to archaeological sites to reflect the history of agricultural cultivation. Some obvious error data are eliminated when processing the data table.
", "ds_ref_way": "", "ds_abstract": "This data set includes five farmland sample plots of wheat field (6 samples), barley field, highland barley field, corn field and millet field, three natural sample plots of spruce forest (3 samples), alpine meadow (2 samples) and wetland, topsoil samples of donghuishan archaeological site (2 samples), and anthers of wheat, barley, highland barley and Agropyron. The maximum diameter of gramineous pollen was measured by a unified pretreatment method, and the grain size was divided into 43 grain size intervals according to the fixed interval of 2.5um, and the percentage content of each sample in each grain size interval was calculated, so as to determine the distribution range of grain size of different types of gramineous pollen.
\nThe data were collected from wheat field, barley field and other types of farmland, spruce forest, alpine meadow and other natural vegetation zones, as well as crop anthers and weed anthers in wasteland in the upper reaches of Heihe River Basin, northwest arid region
\nThe data set contains two tables: (1) the original data of pollen grain size of different types of Gramineae; (2) the percentage data of pollen grain size of different types of Gramineae
", "ds_time_res": "年", "ds_acq_place": "Heihe River Basin", "ds_space_res": "", "ds_projection": "", "ds_process_way": "This data sheet is manually entered by a specially assigned person according to the record book
\nAlgorithm and model introduction: distribution frequency of different Gramineae pollen: the number of Gramineae pollen counted in each particle size interval of different samples / sampling points divided by the number of all measured Gramineae pollen and multiplied by 100%.
", "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": [ "花粉粒径", "禾本科", "花粉粒径原始数据，" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "临泽湿地", "张掖湿地", "东辉山遗址" ], "ds_time_tags": [ 2011, 2012 ], "ds_contributors": [ { "true_name": "黄小忠", "email": "xzhuang@lzu.edu.cn", "work_for": "兰州大学西部环境与气候变化研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "黄小忠", "email": "xzhuang@lzu.edu.cn", "work_for": "兰州大学西部环境与气候变化研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "王涛", "email": "wangtao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "黄小忠", "email": "xzhuang@lzu.edu.cn", "work_for": "兰州大学西部环境与气候变化研究院", "country": "中国" } ], "category": "生态" }