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作 者 ：管东生

期 刊 ：生态学报 2001年 21卷 3期 页码：440~445

关键词：草地；芒萁；灌木群落；C素动态；香港；

Keywords:carbon dynamics, grassland, fernland, shrubland, Hong Kong,

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。

Abstract: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....

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