Effects of the Structure Readjustment of Mixed Stands of Ash and Larch on Physical and Chemical Properties of Soil in Ash Stand

Abstract

Abstract: Our study objects were 23-year-old stands of ash and larch in Jianlagou silviculture experimental station,Maoer Mountain Test Forestry Farm,Northeast Forestry University,Heilongjiang Province.The changes of soil physical and chemical properties in ash stand were measured,after the structure readjustment in larch stand in different ways.The result showed that the effects on soil physical properties in ash stand were not significant,and the effects on some soil chemical properties significant,after the structure readjustment in larch stand in different ways.Under adjustment of thinning the border row,soil hydrolysable nitrogen of upper layer and middle layer was larger than the same layer under other adjustments and no adjustment(P＜0.05),and soil organic matter of upper layer was largest too(P＜0.05). Compared with adjustment of cutting one and reserving another one in a row,and adjustment of cutting half trees evenly in an area,the effects on soil in ash stand under adjustment of thinning the border row,were better.

Key words: ash, larch, mixed stand, restructuring, soil, physical and chemical properties

CLC Number:

S714.2

XU Qingxiang, WEI Xing. Effects of the Structure Readjustment of Mixed Stands of Ash and Larch on Physical and Chemical Properties of Soil in Ash Stand[J]. FOREST RESOURCES WANAGEMENT, 2013, (2): 64-70.

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