期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2009

35

5

466-469

湖南省科学技术厅重点项目（62020608001）；

本校为第一机构

对湖南衡阳盆地紫色土丘陵坡地植物群落进行研究,其生物量具有以下特点:1)衡阳盆地紫色土丘陵坡地植物群落平均总生物量为5 133.6 kg/hm~2,乔木层、灌木层、草本层和枯落物层平均生物量分别为1 936.7、1 624.7、1 400.8和171.4 kg/hm~2,分别占其坡地群落平均总生物量的20.9%、24.1%、50.6%和4.4%.2) 乔木层、灌木层和草本层地上部生物量、根系生物量分别占乔木总生物量、灌木总生物量和草本总生物量的80.2%和19.8%,52.4%和47.6%,43.6%和56.4%.3)乔木层、灌木层、草本层和枯落物层的生物量在不同立地条件其大小顺序依次为:乔木层只在下坡存在;中坡灌木层大于下坡;中坡草本层和枯落物层高,上坡低....

The plant communities in sloping-land with purple soils in Hengyang basin were studied. The results were as follows： （1） The total biomass of the plant communities on the purple soil slope in Hengyang basin was 5 133.6 kg/hm^2, The biomass of the tree layer, the shrub layer, the herbage layer and the deadwood and defoliation layer were 1 936.7, 1 624.7, 1 400.8 and 171.4 kg/hm^2 respectively. They each account for 20.9%, 24.1%, 50.6% and 4.4% of the total biomass of the plant commumities. （2） The percentage of the above-ground biomass and ...