纳板河自然保护区不同坡向和坡位的常绿阔叶林土壤养分  

Soil Nutrient of Evergreen Broad-leaved Forests in Different Slope Aspects and Slope Positions in Nabanhe Nature Reserve

作　　者：袁勇[1] 李小英[1] 刘晓梅[1] 申佳艳 

机构地区：[1]西南林业大学,昆明650224

出　　处：《东北林业大学学报》2016年第3期12-15,25,共5页Journal of Northeast Forestry University

基　　金：国家环保部生物多样性保护专项资金项目(214662)

摘　　要：采取野外调查和室内分析相结合的方法,研究了坡向和坡位对纳板河自然保护区季风常绿阔叶林土壤养分的影响。结果表明:研究区土壤为微酸性、酸性;土壤有机质、全氮和全钾质量分数较高,全磷质量分数相对偏低;土壤有机质和全氮质量分数在各土层(表层、中层、底层)间存在显著差异,而土壤p H值和全磷质量分数只在阳坡的各土层间表现出显著差异;坡向主要影响土壤p H值和土壤全钾质量分数;坡位主要影响土壤有机质和全氮质量分数,且其对土壤养分质量分数的影响程度在不同土层表现不同;坡向和坡位的交互作用显著影响土壤的p H值,而其对其他土壤指标影响不显著;不同土层土壤有机质与全氮、全磷均表现为显著正相关关系。从而为森林资源的管理和保护提供指导。We studied the effects of aspect and position of slope on soil nutrients variation of evergreen broad-leaved forests in Nabanhe Nature Reserve by the field investigation and laboratory analysis. Soil in the study area was slightly acidic and a- cidic. Soil organic matter, total nitrogen and total potassium content were rich, and total phosphorus content was relatively low; The content of soil organic matter and total nitrogen in each soil layer （surface layer, middle layer and bottom layer） was significantly different, but the soil pH value and total phosphorus content showed difference only in sunny slope. The soil pH value and soil total potassium content were mainly affected by slope aspect. The soil organic matter and total nitrogen were mainly ＇affected by slope position, and its influence on soil nutrient content was different in different soil layers. The interaction between slope aspect and slope position had a significant effect on soil pH value, and its effect on other soil indicators was not significant ; Soil organic matter had significant positive correlation with total nitrogen and total phosphor- us in different soil layers.

关 键 词：常绿阔叶林 土壤养分 坡向 坡位 方差分析 

分 类 号：S714.5[农业科学—林学]