箣竹和越南巨竹地上生物量分配格局

Above-ground Biomass Allocation Pattern of Bambusa blumeana and Dendrocalamus yunnanicus

生物量分配格局是竹子利用方向和适宜性评价的重要指标。以传统优良竹种毛竹为参照,研究了大型丛生竹种箣竹和越南巨竹地上部分的生物量分配格局。结果表明,箣竹和越南巨竹竹秆干生物量所占地上部分百分比分别为73.5%和81.6%,高于毛竹的相应比例,竹秆生物量随高度的变化较为平缓,作为材用竹种,潜在应用价值较高。

Biomass allocation pattern is an important index on utilization direction and suitability evaluation of bamboo resources. This study was focused on the distribution pattern of above-ground biomass for the big-sized sympodial bamboo of Bambusa blumeana and Dendrocalamus yunnanicus in comparison of Phyllostachys eduli which is traditional excellent bamboo. Results showed that the proportion of the above- ground dry culm biomass ofB. blumeana and D. yunnanicus was 73.5 % and 81.6 %, respectively, higher than that ofP. eduli, and the culm biomass presented a smooth change with the change of culm height. Therefore, B. blumeana and D. yunnanicus had the deeper potential application value as timber-used bamboo.