围栏内海南坡鹿饲草相对可采食资源量测定

在海南大田国家级自然保护区围栏内用样方法测定海南坡鹿Cervus eldi Hainan经常采食的18种草本和18种灌木类饲草的相对可采食资源量.研究表明,坡鹿对植物部位有较强的选择性采食,对草本植物只采食植株上部约1/2段;对灌木只采食主枝条上部约2/5段上的青绿叶片和小枝梢上端约3 cm处.按干物质计算,草本类饲草的生物量为0.74 kg/m2,灌木类饲草的生物量为0.22 kg/m2.无论草本还是灌木类,饲草的相对可采食资源量相差很大,最小为1.16%,最大为16.68%.各种饲草相对可采食资源量的差异性与坡鹿在围栏内对饲草的选择性采食有关.

Determination of relative edible forage biomass by Hainan Eld's Deer in the enclosure

The relative edible forage biomass of 36 species (18 grass and 18 shrub) grazed by Hainan eld's deer (Cervus eldi Hainanus) were sampled in the enclosure of Hainan Datian National Nature Reserve. The results showed that the eld's deer had a strict food selection, they prefer the upper 1/2 of grass, and only the green leaves of the upper 2/5 of shrub and its branch tip of about 3.00 cm length. Calculated by dry matter, the forage biomass was 0.74 kg/m~2, and 0.22 kg/m~2 for shrubs. The relative edible forage biomasses of 36 species were significantly different, varying from 1.16% to (16.68%), and the differences were related to the selectivity of the eld's deer to the forage species in the enclosure.