下游航空遥感试验期间，开展了下游典型植被下垫面覆盖度观测，观测自2014年7月22日开始，8月1日结束。\n
\n1、 观测时间\n
\n2014年7月22日，27日，30日，31日，8月1日\n
\n2、 样方选择及观测方式\n
\n结合下游植被分布特征，选择大面积分布（大于100 m100 m）且均一的植被作为观测样地，共选取了40个观测样方，包括超级站和耕地站的2个样方；观测下垫面包括：哈密瓜、柽柳、芦苇、杂草、花花柴、苦豆子等。\n
\n每个样地内使用铁杆架起的数码相机进行垂直遥控拍照，以相等的间隔前移拍摄至少9张照片，后期进行剔除后，使用专门的软件处理计算得到样方的覆盖度值。\n
\n3、 观测仪器\n
\n中科院寒旱所数码相机\n
\n4、 数据存储\n
\nExcel存储观测记录数据，相片存储覆盖度原始数据。
", "ds_source": "下游航空遥感试验期间，开展了下游典型植被下垫面覆盖度观测，观测自2014年7月22日开始，8月1日结束。
", "ds_process_way": "结合下游植被分布特征，选择大面积分布（大于100 m100 m）且均一的植被作为观测样地，共选取了40个观测样方，包括超级站和耕地站的2个样方；观测下垫面包括：哈密瓜、柽柳、芦苇、杂草、花花柴、苦豆子等；\n
\n每个样地内使用铁杆架起的数码相机进行垂直遥控拍照，以相等的间隔前移拍摄至少9张照片，后期进行剔除后，使用专门的软件处理计算得到样方的覆盖度值。
", "ds_quality": "数据质量较好
", "ds_acq_start_time": "2014-07-22 00:00:00", "ds_acq_end_time": "2014-08-01 00:00:00", "ds_acq_place": "黑河流域,下游天然绿洲试验区", "ds_acq_lon_east": 101.59805555555555, "ds_acq_lat_south": 41.84305555555556, "ds_acq_lon_west": 100.83638888888889, "ds_acq_lat_north": 42.764722222222225, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 1760723639, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "90800faa-cbd6-4b2c-82fc-7452decdd9f6.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "本数据由“黑河生态水文遥感试验（HiWATER）”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "c94b3578-20da-4346-9de9-c702b6ca8983", "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": "2021-09-14 09:57:11", "last_updated": "2023-08-23 16:47:44", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB2863.2023", "i18n": { "en": { "title": "Heihe River Ecological hydrological remote sensing experiment: vegetation coverage data set observed by digital camera in the lower reaches of Heihe River (2014)", "ds_format": "", "ds_source": "During the downstream aerial remote sensing test, the coverage of the underlying surface of typical downstream vegetation was observed from July 22 to August 1, 2014
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "During the downstream aerial remote sensing test, the coverage of the underlying surface of typical downstream vegetation was observed from July 22 to August 1, 2014.\n
\n1. Observation time\n
\nJuly 22, 27, 30, 31 and August 1, 2014\n
\n2. Quadrat selection and observation method\n
\nCombined with the distribution characteristics of vegetation in the downstream, large-area (more than 100 m 100 m) and uniform vegetation is selected as the observation sample plot, and a total of 40 observation quadrats are selected, including 2 quadrats of super station and cultivated land station; The observation underlying surface includes Hami melon, Tamarix, reed, weeds, firewood, bitter beans, etc.\n
\nIn each sample plot, a digital camera erected by an iron bar is used for vertical remote control photography, and at least 9 photos are taken forward at equal intervals. After elimination in the later stage, special software is used to process and calculate the quadrat coverage value.\n
\n3. Observation instrument\n
\nDigital camera, Institute of cold and drought, Chinese Academy of Sciences\n
\n4. Data storage\n
\nExcel stores observation record data, and photos store original coverage data
", "ds_time_res": "", "ds_acq_place": "Heihe River Basin, downstream natural oasis, experimental area", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Combined with the distribution characteristics of vegetation in the downstream, large-area (more than 100 m 100 m) and uniform vegetation is selected as the observation sample plot, and a total of 40 observation quadrats are selected, including 2 quadrats of super station and cultivated land station; The observation underlying surface includes Hami melon, Tamarix, reed, weeds, firewood, bitter beans, etc;\n
\nIn each sample plot, a digital camera erected by an iron bar is used for vertical remote control photography, and at least 9 photos are taken forward at equal intervals. After elimination in the later stage, special software is used to process and calculate the quadrat coverage value", "ds_ref_instruction": " \nThis data is generated by \"Heihe eco hydrological remote sensing experiment (hiwater)\". When using the data, users should clearly state the source of the data in the text and quote the reference method provided by this metadata in the reference part." } }, "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": [ "植被", "植被盖度", "样方" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "下游天然绿洲试验区" ], "ds_time_tags": [ 2014 ], "ds_contributors": [ { "true_name": "王海波", "email": "wanghaibokm@163.com", "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": "王海波", "email": "wanghaibokm@163.com", "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": "王海波", "email": "wanghaibokm@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "遥感及产品" }