Change Rule of Carbon Flux and Shoots High Growth of Moso Bamboo (Phyllostachys edulis) during Its Fast Growth Stage
We measured moso bamboo ( Phyllostachys edulis) shoots growth and biomass in its rapid growth stage ( from March to June) and got the data of carbon flux in the above period from flux tower .Bamboo shoots high growth follows the “S” type, with its peak at around 18 d, at about 0.78 m/d.The average density of bamboo stand is 0.43strain /m2 .The monthly aver-age biomass above ground and underground are 2.11 and 2.59 kg/m2, respectively.Among the constituents of moso bamboo above ground , the biomass in stem is the biggest , the next is branches and the least is in leaf .CO2 flux data was negative from March to June, and the absolute mean in April was highest , the number is 0.072 72 mg· m-2· s-1.CO2 flux data in May was the lowest in these four months ,and the average daily CO 2 flux data forms a“ U” shape.The daily high growth of bamboo shoots has significantly negative correlation with carbon flux , significant positive correlation with air temperature and soil temperature, soil moisture content.However, it has little correlation with air humidity, net radiation and wind speed.
NETL
NSTL
万方数据
维普
