出版社:Polish Society of Ecological Engineering (PTIE)
摘要:Small midfield ponds have important functions in the hydrology and ecology of hummocky areas of Poland.Because of their sensitivity to meteorological conditions, their number and hydroperiod are altered as a result of climate changes and agriculture pressure.Accurate estimation of the pond area and storage capacities requires up-to-date high-resolution elevation data.In this paper, we developed 0.2 m and 1.0 m bare-earth DEMs from LiDAR data and compared them with DEMs obtained from old bathymetric maps.Then, we calculated A-h and V-h relations and compared them with the relations derived from simplified models describing the pond shape.The analyses showed that LiDAR data are also useful for detecting changes in the ponds morphometry.