摘要
本文在区域样地调查基础上,通过解析木分析,比较了不同经营措施对落叶松种群生物量和生长量的影响。结果表明,4种经营措施中,人工林透光抚育对落叶松林幼龄林时期的树高、胸径和材积的生长都有着较好的促进作用;疏伐抚育模式在落叶松林进入速生时期后,很好地调节主要树种之间的矛盾,达到促进保留木的生长、提高落叶松林分质量的作用;而在落叶松中龄林时期人工林生长抚育伐能够及时调整林分密度,保证林木有一定的营养空间,加速了林木的直径生长和材积生长;同时,透光抚育、生长抚育和疏伐方式都有助于落叶松林下生物物种的生长,可以增加林下物种的多样性和丰富度。
Thin article compares the effects of different management measures on biomass and growth of larch by analyzing the parse tree based on researching the sample. The results show that among four management measures, released thinning plays a significant role in promoting larch growth in its early age. In addition, thinning can regulate the inconsistency among main tree species and bring lots of benefits to larch when it enters fast growth period, such as promoting the growth of survivors and improving the quality of larch. Furthermore, in the middle age of larch, the plantation growing can regulate the density of forest in time, and then offer enough vegetation spaces and accelerate forest growth. In the same time, released thinning, growing and thinning can promote the growth of biologic species in larch plantations, and help to increase the diversity and luxuriance of woodland species.
出处
《农业科技与装备》
2007年第6期20-22,共3页
Agricultural Science & Technology and Equipment
