The macro-and-micro-features of paleokarst and karst facies of the Ordovician in the north of Anhui, China;

Cores and log data from thirteen wells in the study area show that six karst facies can be identified in the weathered crust.

This paper deals with some distinguishing markers concerning the palaeokarst-related reservoirs and the genetic types of karst breccias in terms of their textures and compositions, and the karst facies, palaeokarst mor.

The vertical karst facies belts in different lan.

The division of karst facies should takes full account of the internal relation of the base-level karsts and the non-base-level karsts,the existence of deep-turbulent flow zones and the genetic type of karsts.

Palaeo-karst facies of corbonate rock has a high hydrocarbon bearing ability.

Important role of karstification in the Lower Permian reservoir in Sichuan Basin;

Geologic conditions in karst region are very complicated,for example,earth caves,karstification,tectonic,groundwater and underground river are very rich,all of which would influence on pile types,quality and safety seriously.

Vertical zonations for different type karstifications are discussed.

Current status and comprehensive countermeasures of soil erosion for Karst rocky desertification areas in the Southwestern China;

Fuzzy-based Evaluation of Karst Eco-environment Fragility at Houzhai Underground Basin in Puding County,Guizhou Province;

Ecological water use and its coordination assessment in Southwest China karst mountain——A case study on Houzhai subterranean stream basin,Puding county,Guizhou province;