Evaluation of biodiversity and carbon flax of coppice woods managed by a short rotation

人们认为，通过短时间的轮伐期来生产燃料的矮林（所谓的里山）可以保持高度的生物多样性，并起到碳汇的作用，但迄今为止还没有支持这些观点的研究。研究了短轮伐期经营下矮林的生物多样性状况和碳循环。不同林龄小班间的植被异质性增强了较高的生物多样性，定量评价了矮林林碳通量随林龄增长的沿着变化，并根据生物量增长率确定了最佳采伐林龄。本研究结果可供非营利组织及行政机关参考，作为有效利用矮林材之参考。

Coppice woods (so-called satoyama) managed by a short rotation for fuel production have been thought to maintain a high biodiversity and to function as carbon sink, but no studies supporting these views have been available so far. Biodiversity status and carbon cycle in coppice woods under short rotation management were studied. Vegetation heterogeneity among small compartments of different ages enhanced a high biodiversity.Carbon flux along increasing age of coppice woods was quantitatively evaluated, and the best tree age to harvest was determined based on the rate of biomass increase. These results are to be transferred to NPO's and administrative organs as useful guidelines for effective use of coppice woods.