安徽霍山毛竹林生产力及其土壤养分的特点  

Productivity of Phyllostachys pubescens stands and soil nutrient in Huoshan of Anhui

作　　者：丁正亮[1] 王雷[1] 刘西军[1] 徐小牛[1] 

机构地区：[1]安徽农业大学林学与园林学院,安徽合肥230036

出　　处：《经济林研究》2011年第1期72-76,共5页Non-wood Forest Research

基　　金：国家自然科学基金项目(30771719)

摘　　要：为了研究安徽霍山地区不同立地条件下毛竹林地土壤肥力与生产力的相关性,对该地区毛竹盛产地大化坪镇和佛子岭镇的天然毛竹林进行了调查。结果表明:霍山地区毛竹的平均胸径为10.74 cm,平均树高为14.46 m,立竹度为0.26,平均胸高断面积为20.36 m2.hm-2,林分平均密度为2 496.87株.hm-2;各标准样地中,全氮N与有机质含量随着土层的加深而逐渐减小,变异系数最大的为有机质含量,其次是全磷P、全钾K、速效磷P,标准差最大的为速效氮N;其中,有机质和全磷P的相关性显著,容重与胸径的相关性显著,含水率和全钾K的相关性显著。调查地的毛竹林属于低产林分,其平均生物量不高,仅有54.7 t.hm-2,其各组分生物量的分布大小依次为竹竿(40.05 t.hm-2)>竹枝(8.0 t.hm-2)>竹根(3.68 t.hm-2)>竹叶(2.95t.hm-2);由养分与生物量相关性分析结果可知,林分中的钾含量与总生物量呈显著相关性,这表明钾元素是毛竹总生物量的重要影响因子。In order to research relationship between soil nutrient and growth of Phyllostachys pubescens in Anhui,the investigation was done at Dahuaping town and Foziling town.The results indicated that the mean diameter at breast height,mean height,mean density,mean basal area and mean density of bamboo stand were 10.74 cm,14.46 m,20.36 m2·hm-2,2 496.87 culms·hm-2,0.26,among all the samples,total nitrogen decreased with the soil depth,the biggest coefficient of variation was organic matter,and then,total phosphorus,total potassium available,phosphorus.The highest standard deviation was available nitrogen,the correlation between organic matter and total phosphorus was significant,which was the same as bulk density and mean diameter at breast height,so is soil water content and total potassium.The Phyllostachys pubescens productivity in Huoshan was 54.7 t·hm-2.The biomass partition was sequence as stem twig root foliage,and the biomass were 40.05,8.0,3.68,2.95 t·hm-2,respectively.The potassium had a significant correlation with total biomass,which illustrated potassium was a major factor that influences total biomass in this area compared with other nutrient elements.

关 键 词：毛竹 土壤特性 生物量 林分结构 相关性分析 

分 类 号：S795.7[农业科学—林木遗传育种]