水曲柳人工林直径生长与培育技术  

Diameter Growth of Fraxinus mandshurica and Its Relation to Silviculture Techniques

作　　者：谷加存[1] 楚旭[1] 王政权[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2010年第9期7-9,57,共4页Journal of Northeast Forestry University

基　　金：国家"十一五"林业科技支撑计划课题(2006BAD24B0802)

摘　　要：以帽儿山地区20年生水曲柳人工林为研究对象,研究了林木直径生长与立地选择、施氮肥、落叶松混交和林下清除灌木抚育,以及大气温度的关系。结果表明,坡位和混交对林木直径生长有显著影响,坡下大径木(R>10cm)所占的比例均高于坡中和坡上,且与落叶松混交林中的水曲柳大径木比例(28%)也高于纯林(19%);施氮肥和清除林下灌木对水曲柳直径生长影响不明显,这可能与土壤肥力、林木养分需求特性,以及清除林下灌木的处理时间有关;直径的生长与生长季内日最低和最高温度差值存在一定程度的负相关。An experiment was conducted to study the relationships between diameter growth and site condition,nitrogen （N） fertilization,mixing with Larix gmelinii,forest tending by removing understory shrubs and air temperature using a Fraxinus mandshurica Rupr.plantation in Maoershan region,Heilongjiang Province as a study object.Results showed that slope position and mixed treatment had significant influences on the growth of trunk diameter.The proportion of trees in larger diameter class （diameter 〉10 cm） in the upper part of the slope was higher than that in the lower or middle parts of the slope.And the proportion in the mixed plantation （28 percent） was higher than that of pure plantation （19 percent）.However,N fertilization and forest tending by removing understory shrub had unobvious effects on the diameter growth,which may be related to soil fertility,tree nutrient requirements,and the starting time of forest tending,etc.Moreover,a negative relationship between diameter growth and daily range of air temperature （the maximum temperature minus the minimum temperature） was found in the growing season.

关 键 词：水曲柳(Fraxinus mandshurica Rupr.) 直径 施肥 混交林 抚育 

分 类 号：S753.53[农业科学—森林经理学] S792[农业科学—林学]