Karst topography covers more than 1/3 of the People's Republic of China in area. The porous, fissured, and soluble nature of the underlying karst bedrock (primarily dolomite and limestone) leads to the formation of underground drainage systems. Karst conduit networks dominate this system, and rainfall takes a crucial role on water cycle at China karst area. Nitrogen loss from the karst system i...

The authors propose a new climatic drought index: the standardized precipitation evapotranspiration index (SPEI). The SPEI is based on precipitation and temperature data, and it has the advantage of combining multiscalar character with the capacity to include the effects of temperature variability on drought assessment. The procedure to calculate the index is detailed and involves a climatic wa...

Based on the meteorological and hydrological data of Yalong River Basin from 1960 to 2019, droughts were analyzed using standardized precipitation evapotranspiration index (SPEI) runoff (SRI); then, spatio-temporal evolution propagation characteristics studied multiple time scales. The results showed that, firstly, annual scale, frequencies in basin 28.3% 34.0%, respectively, past 60 years. Fro...

The study aims to identify long-term trends in the changes of drought occurrences using Mann-Kendall (MK) test and Theil-Sen estimator. Trend research was carried out on example catchment area Upper Note? River, which covers an agricultural Poland with some lowest water reserves. meteorological droughts were identified based Standardized Precipitation Index (SPI), while hydrological determined ...

Overland flow connectivity and runoff and sediment trap effectiveness are currently the cutting edge topics in soil erosion research. The effect of agricultural terraces, irrigation channels and trails on runoff and soil erosion modelling at catchment scale is still a remaining research question. In this study we run the index of connectivity of Borselli et al. (2008) and a modified version of ...

Changes in the hydrological regime are widely investigated using a variety of approaches. In this study, we assess changes annual and seasonal flow characteristics based on probabilistic representation runoff at daily time scale. The pattern is constructed by determining quantiles from marginal distributions flows for each day within year. By applying Fourier transformation statistics partial s...

Meteorological to hydrological drought propagation has been widely studied reflect the relationship between these categories and better understand mechanisms. However, global warming may alter features, which are not fully understood. This study aims investigate changes in meteorological conditions, especially their features 1.5–3.0°C warmer climates for 8,655 watersheds globally. First, three-...