A study on quantification and spatial-temporal patterns of wetlands soil moisture

It is of great scientific theory applying value in scientifically understanding the suitable habitat humidity characteristics of different wetlands plants, wetland protection and restoration and containing wetlands ecological degradation to study the change of soil water environmental gradient characteristics with the geomorphic gradient in the wetlands in inland plain and the soil moisture spatial variation in different plant ecosystem types. According to the monitoring data of soil water, the spatial and temporal patterns characteristics of wetland soil moisture are analyzed in a typical small depression of dish shape in the section 135 of Honghe Reserve. The results show that the geomorphic gradient descends and there are significant differences in soil moisture from the island forest on the edge to the swamp in the center of the depression throughout the growing season. On the whole, the soil moisture descends with the geomorphic gradient although there are different trends at different depths in the soil. In addition, the wetness indices of the same area are calculated based on TOPMODEL and DEM. The numerical simulation method is used to characterize the spatiotemporal pattern of the regional soil moisture and the differences are further analyzed between the field monitoring data and the computer numerical simulation data. The study is of guiding significance in strengthening the quantitative research and numerical simulation technology of wetland science.