摘要
对福建省三明市罗卜岩自然保护区不同坡位武夷桦林土壤有机碳变化特征及土壤物理性质进行研究。结果发现:坡位对武夷桦林表层土壤容重的影响达到显著水平;而对深层土壤未达到显著水平。坡位对表层土壤有机碳和全氮含量无显著影响,但显著影响深层土壤有机碳和全氮含量。武夷桦林不同坡位土壤容重均表现为随土层深度的增加而增加,而土壤有机质、全氮含量、C∶N随土层深度的增加而减少。土壤有机碳和全氮含量与容重表现出显著的负相关,表明容重的增加不利于土壤养分含量的累积;而土壤有机碳和全氮含量与毛管孔隙度呈现出显著的正相关。
The contents of soil organic carbon and its physical properties were investigated in two different slopes Betula wuyiensis forest from Sanming Luoboyan natural reserve in Fujian Province.The results showed that slope factor significant influence surface soil bulk density,but not significant on deep soil.In addition,the influence of slope factor on organic carbon and nitrogen content from surface soil was not significant,but significant affected in deep soils.Soil bulk density from different slopes increase with soil depths,whereas soil organic and nitrogen contents and C∶N ratio decrease with soil depths.The contents of soil organic carbon and nitrogen were significant negative related with soil bulk density,suggested increases in bulk density limited soil nutrient accumulation.The contents of soil organic carbon and nitrogen were significant positive related with capillary capacity.
作者
黄茂根
HUANG Maogen(Luobuyan provincial nature reserve,Sanming 365000,Fujian,China)
出处
《福建林业科技》
2019年第2期7-10,共4页
Journal of Fujian Forestry Science and Technology
基金
福建省自然科学基金项目(2016J01116)
省属公益类项目(2018R1011—7)
福建省林业科研项目(闽林科[2016]3号)
三明市林业科研项目(明林计财(2017)49号)
国家林业局南方山地用材林培育重点实验室、福建省森林培育与林产品加工利用重点实验室项目资助
关键词
武夷桦
坡位
土壤有机碳
土壤容重
剖面分布
Betula wuyiensis
slope
soil organic carbon
bulk density
distribution in the soil profile
