Continuous field experiment was carried out on alpine meadow along different elevation gradient in Qilian Mountains during the growing season of 2004 using a soil respiration chamber(Li-6400-09) connected to a portable photosynthesis system(Li-6400).

),which is covered with alpine meadow,located in the middle reaches of the upper Heihe River,one of the long inland river in Northwest China.

The results showed that in 0-10 cm soil layer,the biomass,length density,surface area density,and volume density of living fine roots were all decreased in the order of evergreen broadleaf forest<dwarf forest<coniferous forest<alpine meadows,with significant differences(P<0.

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

Interspecific association and correlation of dominant species of Lishan Mountain meadow in Shanxi Province;

Monitoring and evaluation of productivity of mountain meadow in northern Xinjiang