宁夏回族自治区彭阳县玉洼小流域NDVI数据集（2000年、2011年、2020年）
收藏国家地球系统科学数据中心2023-10-13 更新2024-03-04 收录
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https://www.geodata.cn/data/datadetails.html?dataguid=19289349198365&docId=4505
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资源简介：
数据集为宁夏回族自治区彭阳县玉洼小流域NDVI数据，空间分辨率1m，包含3期数据（2000年、2011年、2020年）。该数据集以高精度遥感数据作为基础数据，借助ENVI软件，根据各影像辐射定标参数进行辐射定标、地理配准、大气校正、拼接、裁剪等预处理之后，并使用ENVI的Band math工具计算获得相应年份的NDVI。该数据集反映了玉洼小流域植被覆盖变化情况，为研究该区域生态环境、植被恢复等提供数据支撑。
注：由于2000年遥感影像含云量为37%，故数据有一定偏差。
This dataset refers to the NDVI (Normalized Difference Vegetation Index) data of Yuwa Small Watershed in Pengyang County, Ningxia Hui Autonomous Region, with a spatial resolution of 1 m. It contains three phases of data from the years 2000, 2011, and 2020.
This dataset was constructed using high-precision remote sensing data as the original source. Preprocessing operations including radiometric calibration, geographic registration, atmospheric correction, mosaicking, and cropping were carried out on the images via ENVI software based on their respective radiometric calibration parameters. Afterwards, the NDVI values for each corresponding year were calculated using the Band Math tool integrated in ENVI.
This dataset documents the vegetation cover dynamics in Yuwa Small Watershed, providing solid data support for research on the regional ecological environment, vegetation restoration and related studies.
Note: The remote sensing image from the year 2000 has a cloud cover rate of 37%, resulting in certain deviations in the corresponding dataset.
提供机构：
西北农林科技大学水土保持研究所
创建时间：
2023-10-13
