森林与环境学报2018，Vol.38Issue(2)：129-134,6.DOI:10.13324/j.cnki.jfcf.2018.02.001
长汀不同郁闭度马尾松林降雨淋溶养分输入特征
Characteristics of rainfall leaching nutrient input in Pinus massoniana forest with different canopy density of Changting
摘要
Abstract
Rainfall and leaching process has an important influence on nutrient cycling in forest ecosystem which is one of the important causes for the soil nutrient and water loss. Influence of rainfall leaching process on the nutrient importing characteristics of Pinus massoniana forest were investigated in the south China.Soil and water samples were collected in different canopy density(0.2, 0.4,0.6,0.8) of Pinus massoniana forest,and the content of six nutrient elements(N,K,Ca,Na,Mg and Mn) were measured. The results revealed that:after the redistribution of rainfall through canopy, the concentration of nutrient elements, except Ca, in throughfall and stemflow had increased with the rise of canopy density. The content of Ca in the stemflow was highest under canopy density of 0.4 and was the lowest under canopy density of 0.6. In winter and some month of low rainfall,nutrient content will reduce if the canopy density is over high. With the growth of canopy density in Pinus massoniana forest, the amount of dry sediment increased,such as adsorption dust,resulted in the rise of the content of elements in rainfall leaching,which increased the nutrient input of Pinus massoniana forest and promoted the nutrient cycle.关键词
郁闭度/马尾松/大气降雨/穿透雨/树干茎流/养分输入Key words
canopy density/Pinus massoniana/rainfall/throughfall/stemflow/nutrient input分类
农业科技引用本文复制引用
黄智军,刘青青,侯晓龙,吴鹏飞,靳聪,马祥庆..长汀不同郁闭度马尾松林降雨淋溶养分输入特征[J].森林与环境学报,2018,38(2):129-134,6.基金项目
国家科技支撑计划项目(2014BAD15B02) （2014BAD15B02）
福建省科技厅重点项目(2017Y0001). （2017Y0001）
