人工针阔混交林择伐后凋落物及土壤养分含量分析  

Litter and soil nutrient content analysis of mixed plantation of coniferous and broadleaf after selective cutting

作　　者：巫志龙[1] 周新年[1] 郑丽凤[1] 高山[1] 罗积长 陈诚焕 

机构地区：[1]福建农林大学交通工程学院,福建福州350002 [2]建瓯市林业局,福建建瓯353100

出　　处：《福建林学院学报》2007年第4期318-321,共4页Journal of Fujian College of Forestry

基　　金：福建省自然科学基金资助项目(2006J0301);福建省科技厅重点科学基金资助项目(2007N0002;2006F5006);福建省林业厅科学基金资助项目(闽林科[2006]7号第14项)

摘　　要：对人工针阔混交林进行择伐试验研究,定量分析人工林择伐前后林地凋落物及土壤养分含量的变化,结果表明:择伐后凋落物和土壤各养分元素的含量与择伐前相比均略有降低。凋落物各养分元素N、P、K、Ca和Mg的含量分别下降0.05%、0.05%、0.33%、0.20%和0.03%,但凋落物养分总量明显增加;土壤有机质、全N、水解性N、全P、速效P、全K和速效K分别下降1.9 g.kg-1、0.24 g.kg-1、4.42 mg.kg-1、0.029 g.kg-1、0.67 mg.kg-1、1.21 g.kg-1和28.64 mg.kg-1。The experiments on selective cutting of mixed plantation of coniferous and broadleaf were carried out, and the effects on the litter and soil nutrient contents before and after selective cutting were quantitatively analyzed. The results show that the litter and soil nutrient contents are both slightly reduces after selective cutting. The litter nutrients, such as N, P, K, Ca and Mg, decrease 0. 05%, 0. 05%, 0. 33%, 0.20% and 0. 03% respectively, but the total nutrient content of litter increased greatly. The soil nutrients, such as organic substance： total N, hydrolytic N, total P, available P, total K and available K, drop 1.9 g·kg^-1 , 0.24g·kg^-1 , 4. 42 mg·kg^-1, 0. 029 g·kg^-1, 0. 67 mg·kg^-1 , 1.21 g·kg^-1 and 28. 64 mg·kg^-1 respectively.

关 键 词：人工针阔混交林 择伐 凋落物 土壤 养分含量 

分 类 号：S718.55[农业科学—林学]