辽东山区4种典型林分类型的土壤理化特征  

Physi-chemical Characteristics of Soil of Four kinds Typical Forest Types in Hilly Area of Eastern Liaoning Province

作　　者：刘曼丽 

机构地区：[1]宽甸满族自治县林业调查规划院,辽宁丹东118200

出　　处：《防护林科技》2016年第4期20-22,共3页Protection Forest Science and Technology

基　　金：国家林业公益性行业科研专项(200904064)

摘　　要：以辽东山区4种典型林分类型0-30cm 土层土壤为研究对象,研究不同林分类型土壤理化性质.结果表明4种林分类型土壤容重大小顺序为蒙古栎次生林（1.24gcm^-3）〉落叶松人工林（1.15gcm^-3）〉白桦＋冷杉混交林（0.87gcm^-3）〉蒙古栎＋花曲柳＋紫椴混交林（0.79gcm^-3）;土壤总孔隙度和非毛管孔隙度大小顺序为蒙古栎＋花曲柳＋紫椴混交林（67.64%、24.36%）〉白桦＋冷杉混交林（60.80%、17.49%）〉落叶松人工林（52.95%、12.13%）〉蒙古栎次生林（49.68%、10.13%）;蒙古栎＋花曲柳＋紫椴混交林土壤中有机质、全氮、全磷含量相对较高,白桦＋冷杉混交林次之.阔叶混交林和针阔混交林有利于提高土壤透气性,涵养水源,提高土壤肥力.Taking 0-30 cm soil layer in four kinds of typical forest types in hilly area of eastern Liaoning Province as the research object,soil physical-chemical properties of different forest types were studied.Result shows that among four stand types,the descending order of soil bulk density is secondary forest of Quercus mongolica 1.24g!cm-3> Larix gmelinii plantation 1.15g!cm-3> Betula platyphylla+ Abies fabric mixed 0.87g!cm-3> Mongolian oak +Fraxinus rhynchophylla mixed for Tilia amurensis + 0.79g!cm-3.The descending order of soil porosity and non-capillary porosity is:Quercus mongolica + Fraxinus rhynchophylla +mixed forest of Tilia amurensis(67.64%,24.36%)> mixed forest of Betula platyphylla+ Abies fabric(60.80%,17.49%)> Larix gmelinii plantation(52.95%,12.13%)>secondary forest of Larix gmelinii(49.68%,10.13%).Content of organic matter,total nitrogen,total phosphorus in soil of mixed forest for Quercusmongolica +Fraxinus rhynchophyllafor Tilia amurensis is relatively higher;the above indexes of mixed forest of Betula platyphylla+ Abies fabric are the second.The mixed forest of broadleaved forest and conifer and broadleaf mixed forest are propitious to increase the soil permeability and soil fertility,also helpful in water conservation.

关 键 词：辽东山区 林分类型 土壤理化性质 

分 类 号：S715[农业科学—林学]