Karst hills, that is, jagged topography created by dissolution of limestone and other soluble rocks, are distributed extensively in tropical forest regions, including southern parts of China. They are characterized by a sharp mosaic of water and nutrient availability, from exposed hilltops with poor soil development to valleys with occasional flooding, to which trees show species-specific distr...

Karst landscapes are often perceived as highly vulnerable to agricultural phosphorus (P) loss, via solution-enlarged conduits that bypass P retention processes. Although attenuation of P concentrations has been widely reported within karst drainage, the extent to which this results from hydrological dilution, rather than P retention, is poorly understood. This is of strategic importance for und...

Abstract Speleothem oxygen isotopic (? 18 O) records are used to reconstruct past hydroclimate yet from the same cave do not always replicate. We use a global database of speleothem ? O quantify replicability show that disagreement is common worldwide, occurs across timescales and unrelated climate, depth or lithology. Our analysis demonstrates within-cave differences in mean values consistent ...

In 1993, a large radio telescope (LT, now referred as the SKA) was proposed by astronomers from 10 countries at the 24 General Assembly of URSI. The SKA would be a telescope array with a total effective collecting area of about one square kilometer. There are various concepts, worldwide, for realizing the SKA project. Extensive efforts have been made, e.g, by project teams in The Netherlands, A...

Density-driven dissolution of carbon dioxide in water is a well-known and much described mechanism geological sequestration this greenhouse gas. It remarkable that such enhanced does not receive attention karst hydrology speleology. Models hypotheses on development are complex consider many different processes. We focus here the influence CO2 partial gas pressures at interface between atmospher...

Much of the existing conceptualization of fluid flow in karst aquifers is based on work in extensively cemented and recrystallized Paleozoic and Mesozoic carbonates. Within these aquifers, flow is often primarily through conduits (White 1969, 1977; Smart and Hobbs 1986; Ford and Williams 1989), although diffuse flow may occur through secondary porosity, such as fractures and joints (Shuster and...

Dissolved CO2 in karst water is the key driving force of karstification. Replenishment concentrations occurs by meteoric that percolates through vadose zone, where produced from microbial activity dissolved. can thus be transported with percolating or gas phase due to ventilation systems. We measured seasonally fluctuating air a cave and their influence on aqueous different depths stagnant colu...

Soil and water loss in karst areas seriously restricts the sustainable development of ecosystems, economy society southwest China, which has been a concern of, studied by, many scholars China abroad. great influence on evolution rocky desertification, groundwater quality, drought flood disasters regions. This paper aimed to provide review studies slope hydrological processes soil loss. In this ...