Based on the D8 algorithm,the catchments in Zhongdian area can be extracted in GIS,and the result is similar to that obtained from the drawn geographical map.

The Huadian basin situated in southern Jilin Province of NE China is a half-graben basin and lies to north of the Dunhua-Mishan faults.

CO_2-release rate of soil respiration and litter decomposition of meadow marshes in Sanjiang Plain;

Plants dominance and photosynthetic characteristics of dominant plants of montane meadow in Malong region of Yunnan;