A dataset of water bodies in the lower Yellow River region during 1990-2021
The lower reaches of the Yellow River are typical areas characterized by the interaction of rivers,urban areas,and agricultural ecosystems.This region fare confronted with ecological challenges,with complex relationships between humans,water,and land,putting ecosystem service functions at risk of degradation.In light of the ecological protection and high-quality development strategy for the Yellow River Basin,there is an urgent need for thematic data on water bodies in the lower reaches of the Yellow River,and the research is of great significance for analyzing the temporal and spatial dynamics of these water resources.This study gathered Landsat image data from the lower reaches of the Yellow River spanning from 1990 to 2021,and integrated the normalized differential water index(mNDWI),normalized Vegetation index(NDVI),and enhanced Vegetation index(EVI)to identify water body information in the region.On this basis,we calculated the water body frequency,and derived datasets for water body frequency,permanent water body and maximum water body with a 30 m resolution over 32 years in the lower reaches of the Yellow River.Accuracy evaluation results show that this data has good accuracy(the Kappa coefficient is 0.806,and the overall accuracy is 0.977).The results effectively illustrate the spatial distribution of water bodies and their long-term dynamic characteristics in the lower reaches of the Yellow River.It can provide basic data support for the protection of water ecological environment,water resource development,and related research in the region.
water indexwater body identificationwater body frequencyLandsatthe lower reaches of the Yellow River
万方数据
维普
