本数据集是2019年和2020年咸海流域NDVI月均值数据。提取美国国家航空航天局中分辨率成像光谱仪MOD13A2产品第一波段作为归一化植被指数数据，乘以比例因子0.0001，叠加咸海流域边界数据，裁切后得到咸海流域范围内的NDVI月均值数据。每月一期，一年12期，2019-2020年共24张栅格图像。空间分辨率为1000m×1000m，时间分辨率为1个月，投影坐标为GCS_WGS_1984，每个像元的值为每个月的归一化植被指数的平均值。
", "ds_source": "来源于美国国家航空航天局中分辨率成像光谱仪MOD13A2产品第一波段。Modis影像数据：https://ladsweb.modaps.eosdis.nasa.gov/
", "ds_process_way": "提取MOD13A2产品第一波段作为叶面积指数数据，乘以比例因子0.0001。
", "ds_quality": "空间分辨率为1000m×1000m，时间分辨率为1个月，每个像元的值为每个月归一化植被指数的平均值，投影坐标为GCS_WGS_1984。
", "ds_acq_start_time": "2019-01-01 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "", "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": 99117827, "ds_files_count": 2, "ds_format": "tif", "ds_space_res": "1000", "ds_time_res": "月", "ds_coordinate": "WGS84", "ds_projection": "WGS84", "ds_thumbnail": "74ae0e2b-1c15-46a3-bd20-146e40ee55a9.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 1, "publish_time": "2025-03-17 19:45:36", "first_publish_time": null, "last_updated": "2025-03-22 19:01:06", "protected": false, "protected_to": null, "lang": "zh", "cstr": "33110.11.ariddc.00313", "license": null, "extra": null, "files_shape": [ { "name": "2019（月数据）.rar", "size": 49922601, "is_dir": false }, { "name": "2020（月数据）.rar", "size": 49195226, "is_dir": false } ], "features": null, "data_level": 0, "i18n": { "en": { "title": "Monthly average dataset of 1km normalized vegetation index in the Aral Sea Basin in 2019 and 2020", "ds_abstract": "This dataset is the monthly mean NDVI data of the Aral Sea Basin in 2019 and 2020. The first band of the MOD13A2 product of NASA's Moderate Resolution Imaging Spectrometer is extracted as normalized vegetation index data, multiplied by a scale factor of 0.0001, superimposed on the Aral Sea Basin boundary data, and trimmed to obtain NDVI monthly mean data within the Aral Sea Basin. There are one monthly and 12 issues a year. There are a total of 24 grid images from 2019 to 2020. The spatial resolution is 1000m×1000m, the temporal resolution is 1 month, the projection coordinates are GCS_WGS_1984, and the value of each pixel is the average value of the normalized vegetation index for each month.
", "ds_source": "It comes from the first band of the MOD13A2 product of NASA's Moderate Resolution Imaging Spectrometer. Modis image data: ladsweb.modaps.eosdis.nasa.gov/
", "ds_process_way": "Extract the first band of MOD13A2 product as leaf area index data and multiply it by a scale factor of 0.0001.
", "ds_quality": "The spatial resolution is 1000m×1000m, the temporal resolution is 1 month, the value of each pixel is the average value of the normalized vegetation index for each month, and the projection coordinates are GCS_WGS_1984.
", "ds_format": "tif", "ds_projection": "WGS84", "ds_space_res": "1000", "ds_time_res": "months" } }, "license_type": null, "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": [ "NDVI", "归一化植被指数" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "咸海" ], "ds_time_tags": [ 2019, 2020 ], "ds_contributors": [ "钱静", "刘铁" ], "ds_meta_authors": [ "钱静", "陈朝亮" ], "ds_managers": [ "刘铁" ], "category": "中分辨率成像光谱仪" }