TY - Data T1 - MODIS mod13a2 normalized vegetation index (NDVI) data set of Jinghe River Basin (2000-2021) A1 - Zhang yaonan DO - 10.12072/ncdc.JRiver.db1971.2022 PY - 2022 DA - 2022-04-08 PB - National Cryosphere Desert Data Center AB - Vegetation index is an index that mainly reflects the difference between the reflection of vegetation in visible light and near-infrared band and soil background. Each vegetation index can be used to quantitatively describe the growth status of vegetation under certain conditions. At present, normalized vegetation index (NDVI) is an important data source for detecting vegetation growth status, vegetation coverage and eliminating some radiation errors. NDVI can reflect the background influence of plant canopy, such as soil, wet ground, snow, dead leaves, roughness, etc., and is related to vegetation cover. It is one of the important parameters reflecting crop growth and nutritional information. According to this parameter, we can know the nitrogen demand of crops in different seasons, and it also plays an important guiding role in the rational application of nitrogen fertilizer. Based on modis-2000, modis-2000 and modis-2000 are used to convert the watershed data set, and the watershed data of Jinghe River is generated based on modis-2000. The spatial resolution of this data set is 1km and the temporal resolution is 16 days DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/55e2d873-80d8-4589-bd8b-699c285908f7 ER -