营造速生林是很多国家用来缓和木材供应紧张状况的一项重要措施。发达国家早期营造的速生林,主要是提供纸浆材,力求获得最大限度的生物量。对于这一要求,不少速生树种是能够满足的。当然,也有些造纸专家认为速生木材的年轮宽、密度小、纸浆得率低,加工费用高,但总的来说,速生木材作为造纸原料,其质量并没有引起太多的议论。 Creating fast-growing forests is an important measure used by many countries to ease the tight supply of timber. The fast-growing forests developed in the early days of developed countries mainly provide pulpwood and strive for the maximum biomass. For this requirement, many fast-growing species are able to meet. Of course, some paper-making experts also believe that fast-growing timber has an annual ring width, a small density, a low pulp yield, and a high processing cost. However, on the whole, fast-growing timber, as a raw material for papermaking, has not caused too much talk about quality.