摘要
为实现毛竹林的可持续发展,提出"上阔下竹"的复合经营模式,为验证该模式的有效性,在永安市铁丁石村,选取同一山脊上经营措施基本相同的四个坡面。按混交比例的大小依次标记为类型Ⅰ(混交比例32%,)、类型Ⅱ(混交比例28%)、类型Ⅲ(混交比例为25%)、类型Ⅳ(混交比例0%),研究"上阔下竹"模式对毛竹林林地土壤及毛竹生长的影响。结果表明:4种类型中,毛竹(Phyllostachys pubescens)林土壤全氮、全磷、全钾含量无显著差异;各类型上位阔叶林土壤水解氮、有效磷、速效钾含量低于其下位毛竹林;各类型毛竹林相同坡位土壤水解氮、有效磷、速效钾含量无显著差异;不同混交模式中,以混交比例为28%时,山体各部位毛竹林平均胸径最大,较其余混交模式竹林平均胸径可提高5%~12%。
Moso bamboo （Phyllostachys edulis） is one of the most important forest resources in southern China.Intensive management is an effective way to improve the economic benefits of bamboo forest.However,with the extension the intensive operation time,the ecological negative effect is becoming more and more prominent.In order to realize the sustainable development of bamboo forest,we put forward the model of compound management.We selected a mountain with same slope and similar management in Yongan City Tiedingshi Village to verify the effectiveness of the model.According to the mixed proportion,the forest is marked as type I （mixed ratio is 32%）,type II （mixed ratio is 28%）,type II （mixed ratio is 25%） and type IV （mixed ratio is 0%）.The effect of mountaintop broad-leaved trees on the field soil and growth of Moso bamboo is analyzed.Results show that there was no significant difference between the 4 mixed forest types of total nitrogen,phosphorus and potassium in Moso bamboo forest （Phyllostachys edulis）.The hydrolyzable nitrogen,available phosphorus and potassium of the broad-leaved forest at the mountain top were lower than that of the bamboo forest at the foot of the mountain.There was no significant difference either between the 4 mixed forest types of hydrolyzable nitrogen,available phosphorus and potassium at the same slope position.When mixed ratio was 28%,the average DBH of bamboo in all parts of the mountain was the largest.Compared with other mixed forest,the average DBH could be increased by 5%-12%.
出处
《森林工程》
2017年第6期15-18,30,共5页
Forest Engineering
基金
林业公益性行业科研专项(201204106)
关键词
山顶阔叶林
毛竹林
林地土壤
生产力
Mountaintop broad - leaved forest
Moso bamboo forest
forestland soi l
productivity
