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机构地区:[1]湖南省林业科学院,湖南长沙410004 [2]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083
出 处:《中南林业科技大学学报》2011年第1期18-26,共9页Journal of Central South University of Forestry & Technology
基 金:北京市教育委员会科学研究与科研基地建设项目(SYSBL2009);引进国际先进农业科学技术计划(948计划)项目(2005-4-02)
摘 要:侧柏Platycladus orientalis是北京山区主要的造林树种,其人工林面积约占全市森林总面积的25.96%,但是目前该地区侧柏人工林普遍存在密度过大、树木生长分化严重、树木生长过慢等一系列问题。为使北京地区侧柏人工林经营技术决策更加科学合理,通过将之前建立的模型应用于美国FVS软件,对侧柏典型林分自然生长和采取经营措施后(主要为疏伐)的生长动态进行了可视化预测和模拟,得到了合理的预测结果。结果表明,33年生3 200株/hm2的侧柏人工林适合采用30%~45%的中弱度机械疏伐。As one of the important afforesting tree species in Beijing mountain area,the area of Platycladus orientalis in this area was about 25.96% of total forest plantation in Beijing city.But the plantation of Platycladus orientalis had a series of ubiquitous problems,such as excessive density,serious differentiation of tree growth,and too slowly tree growing,and so on.In order to make more scientifical and reasonable technology decision-making management for plantations of Platycladus orientalis in Beijing area,the typical stand dynamics growth of natural growth and thinned Platycladus orientalis had been visually forecasted and simulated by applying pre-established models in Forest Vegetation Simulator(FVS) software.The reasonable forecast results indicat that low and median mechanical thinning of 30%~45% were appropriate for the stand which the ages of 33 years,and the density of 3 200 trees/hm2 of Platycladus orientalis plot.
分 类 号:S791.38[农业科学—林木遗传育种] S757.46[农业科学—林学]
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