作　　者： ;

机构地区： 中山大学环境科学与工程学院环境科学系

出　　处： 《生态学报》 2001年第3期440-445,共6页

摘　　要： 通过对香港草地、芒萁、灌木群落植物生物量和净生产量的研究 ,探讨这些植物群落的 C素动态。结果表明 :草地、芒萁、灌木群落植物的 C贮量分别为 377,871和 1 4 4 8g/m2 ;土壤的 C贮量大于植物。植物的年固碳量为 332 ,4 89和 4 69g/m2· a;碳同化净增量为 87,2 4 6,1 85g/m2· a。刈割实验也表明人类干扰活动会严重降低植被的 C固定量。 Carbon dynamics of the grass, fern and shrub communities in Hong Kong were studied based on the estimation of their biomass and net primary production (NPP). The results showed that carbon storage of plants in the grassland, fernland and shrubland were 377, 871 and 1448 g/m 2 respectively. The carbon storage of soil was larger than that of plants in the three communities. The carbon amounts assimilated for NPP and net accumulative biomass were 332, 489, 469 g/m 2· a and 87, 246, 185 g/m 2·a respectively. The results indicated that human disturbance, such as cutting, would decrease carbon amount assimilated by vegetation.

关 键 词： 草地 芒萁 灌木群落 素动态 香港

领　　域： [生物学] [生物学]