辽东桤木林龄与土壤肥力关系研究  

Relationship Between Stand Age of Alnus sibirica and its Soil Fertility

作　　者：王庆红 

机构地区：[1]大连市普兰店区林业技术推广中心,辽宁大连116200

出　　处：《防护林科技》2017年第7期44-46,共3页Protection Forest Science and Technology

摘　　要：辽东桤木不同年份的造林地采用随机抽样的方法,采集土样进行土壤养分状况分析,结果表明:同龄辽东桤木树根范围内的土壤养分比树根范围外的养分高;随树龄增加,枯落物厚度、土层厚度和土壤养分有提高的趋势。可见,辽东桤木提高地力的作用明显。The soil nutrient status was analyzed by using random sampling method in afforestation land of Alnus sibirica at different years. Result shows that the soil nutrient content in the roots of alder trees is higher than that in the roots. There are also trends that increase with age,litter thickness 〉 soil thickness and soil nutrients are increas-ing. It indicates that Alnus sibirica has a significant effect of increasing soil fertility.

关 键 词：辽东桤木 林龄 土壤肥力 状况关系 

分 类 号：S158[农业科学—土壤学]