The paper also proposes mathematical models for measuring Rosa roxburghii yield based on cluster number, cluster height, or crown width.

Characteristics of carbon dioxide exchange between atmosphere and alpine shrub on the Qinghai-Tibet Plateau;

Based on the continuous CO2 flux observation with eddy covariance method conducted in the alpine shrub on the Tibetan Plateau from 1 January to 31 December in 2003 and 2004,the relationship between CO2 flux and temperature is analyzed.

Eddy covariance with an open path system was adopted to measure carbon dioxide flux without interruption in 2003 and 2004 in order to study the characteristics and affecting factors of carbon dioxide flux of alpine shrubs in Qinghai-Tibet Plateau beyond the growing season.

Effects of elevation,slope and exposure on biomass and nutrient contents of alpine brushes were investigated at 12 sample stands.

To establish a high efficient shoot regeneration system of three promising southern highbush blueberry selections,a comparative research of six basic media on shoot proliferation was conducted.

Aroma components and their changes in highbush blueberry "Sierra"fruit from green stage,middle stage and ripe stage were analyzed by static headspace and gas chromatography-mass spectrometry(GC-MS).

The aroma components of highbush blueberry were analyzed using early,middle,later cultivars by static headspace and gas chromatography-mass spectrometry(GC/MS).