A dataset of 1 km grid drainage density in China(2019)
Drainage density is an outcome of the combined influence of watershed landform,climate,soil,and vegetation.As a comprehensive characterization index,the measurement and monitoring of drainage density is of great significance to environmental protection and water resources allocation in regional watersheds.This paper uses river water surface vector data from the third National Land Survey,extracting the river center line.Then,the kilometer grid network production software is employed to generate the dataset of 1 km grid drainage density in China.Rigorous quality control and quality inspection measures throughout all stages of data processing have been implemented,including river surface vector extraction,river skeleton line extraction,and kilometer grid density calculation,to ensure the correctness,integrity and consistency of the data.This dataset can be used for national and regional hydrogeological analysis,soil erosion estimation,planning and layout of basic monitoring station network,etc.
国家科技期刊平台
NSTL
万方数据
