Based on discovery of sedimento-successive sections of the Jurassic-Cretaceous transitional stra- ta,a boundary stratotype candidate has been preliminarily erected in the Luanping basin of northern Hebei.

Dinosaur footprint fossils in dark mudstones of the Xiguayuan Formation(Upper Jurassic-Lower Cretaceous) in Luanping Basin and their geological significance;

Peperite in the Jiufotang Formation of the Luanping Basin and Its Geological Implications;

Sequence characters of the fan delta outcrop of Xiguayuan Formation in Luanping Basin;

Evalution on Forestry Suitability of Resource in the Basin of Northwest Hebei Mountains on GIS;

Stratigraphic division and correlation of the Early-Middle Juras-sic in northern Hebei, China;

Numerous geochemical anomalies delineated by 150 000 drainage sediment survey in northern Hebei are weak and gentle anomalies or singleelement anomalies.

Studies on the forest communities in the transitional zone between Bashang plateau and Jibei mountainous region;