本数据为盈科绿洲农田观测的一个生长周期内的ASTER植被覆盖度数据集。数据观测从2012年5月30日开始到9月12日结束。
原始数据：
1、 ASTER的15m分辨率L1B反射率产品
2、中游人工绿洲生态水文试验区植被覆盖度数据集
数据处理：
1、对ASTER反射率产品进行预处理得到ASTER NDVI；
2、通过NDVI-FVC非线性转换形式，利用ASTER NDVI与地面实测FVC得到不同时相的ASTER尺度下NDVI到FVC的转换系数；
3、将此系数应用到ASTER影像上，得到15m分辨率的植被覆盖度；
4、将15m分辨率ASTER FVC聚合，得到1km ASTER FVC产品
", "ds_source": "本数据为盈科绿洲农田观测的一个生长周期内的ASTER植被覆盖度数据集。数据观测从2012年5月30日开始到9月12日结束。
", "ds_process_way": "1、对ASTER反射率产品进行预处理得到ASTER NDVI；
2、通过NDVI-FVC非线性转换形式，利用ASTER NDVI与地面实测FVC得到不同时相的ASTER尺度下NDVI到FVC的转换系数；
3、将此系数应用到ASTER影像上，得到15m分辨率的植被覆盖度；
4、将15m分辨率ASTER FVC聚合，得到1km ASTER FVC产品
", "ds_quality": "数据质量较好
", "ds_acq_start_time": "2012-05-30 00:00:00", "ds_acq_end_time": "2012-09-12 00:00:00", "ds_acq_place": "黑河流域,中游人工绿洲试验区,农田", "ds_acq_lon_east": 110.66666666666667, "ds_acq_lat_south": 38.86666666666667, "ds_acq_lon_west": 100.5, "ds_acq_lat_north": 38.81666666666667, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 64401454, "ds_files_count": 61, "ds_format": "dat", "ds_space_res": "/", "ds_time_res": "/", "ds_coordinate": "WGS84", "ds_projection": "/", "ds_thumbnail": "c3da1619-4657-4fbf-9a4d-233c7e7acc65.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": [ "170.4510" ], "quality_level": 3, "publish_time": "2021-09-14 09:56:31", "last_updated": "2025-06-30 16:34:43", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.39", "i18n": { "en": { "title": "Heihe River eco hydrological remote sensing experiment: aster vegetation coverage data set in the middle reaches of Heihe River Basin (may September 2012)", "ds_format": "dat", "ds_source": "This data is aster vegetation coverage data set in a growth cycle of farmland observation in Yingke oasis. The data observation began on May 30 and ended on September 12, 2012
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "This data is aster vegetation coverage data set in a growth cycle of farmland observation in Yingke oasis. The data observation began on May 30 and ended on September 12, 2012
Raw data:
1. Aster's 15m resolution L1B reflectivity product
2. Vegetation coverage data set of artificial oasis eco hydrological experimental area in the middle reaches
Data processing:
1. Aster NDVI is obtained by pretreatment of Aster reflectance products
2. Through the nonlinear transformation form of ndvi-fvc, the conversion coefficients from NDVI to FVC at different time scales are obtained by using aster NDVI and ground measured FVC
3. Applying this coefficient to ASTER image, the vegetation coverage with 15m resolution is obtained
4. The 15m resolution aster FVC was polymerized to obtain 1km aster FVC product
", "ds_time_res": "/", "ds_acq_place": "Heihe River Basin, artificial oasis experimental area in the middle reaches, farmland", "ds_space_res": "/", "ds_projection": "/", "ds_process_way": "1. Aster NDVI is obtained by pretreatment of Aster reflectance products
2. Through the nonlinear transformation form of ndvi-fvc, the conversion coefficients from NDVI to FVC at different time scales are obtained by using aster NDVI and ground measured FVC
3. Applying this coefficient to ASTER image, the vegetation coverage with 15m resolution is obtained
4. The 15m resolution aster FVC was polymerized to obtain 1km aster FVC product
", "ds_ref_instruction": "This 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": [ "航天遥感", "植被", "植被盖度", "卫星影像" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "中游人工绿洲试验区", "农田" ], "ds_time_tags": [ 2012 ], "ds_contributors": [ { "true_name": "马明国", "email": "mmg@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": "马明国", "email": "mmg@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": "马明国", "email": "mmg@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": "遥感及产品" }