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樟树人工林生态系统不同层次穿透水水化学特征 被引量:17

Hydrochemical characteristics of through-fall in different layers of Cinnamomum camphora plantation
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摘要 对樟树人工林生态系统的大气降水、林冠层穿透水、灌木层穿透水和草本层滴透水中N、P、SiO2、K、Ca、Mg、Cu、Fe、Zn和Mn共10种养分元素含量进行了测定。结果表明,不同月份大气降水养分元素含量不同,各元素各月平均含量按大小排序为Ca>SiO2>Zn>NH4-N>K>NO3-N>Fe>Mg>Mn>P>Cu。大气降水经过林冠层后,林冠层穿透水、灌木层穿透水、草本层滴透水中各养分元素含量变化基本一致,均表现季节动态变化,大多数元素含量增加。林冠层穿透水、灌木层穿透水、草本层滴透水中各元素各月平均含量按大小排序分别为Ca>K>Zn>SiO2>NH4-N>NO3-N>Mg>Mn>Fe>P>Cu、Ca>K>Zn>SiO2>NH4-N>NO3-N>Mg>Fe>Mn>P>Cu和Ca>NH4-N>K>SiO2>NO3-N>Mn>Mg>Zn>Fe>P>Cu。林冠层穿透水和灌木层穿透水中Fe,草本层滴透水中Fe、Zn为负淋溶,其余各元素浓度有所增加。在上述3项中,除NO3-N、Fe、Zn外,草本层滴透水中其它养分元素的富集作用都强于其它2项。 The measurement of nutrient elements N,P,SiO_2,K,Ca,Mg,Cu,Fe,Zn and Mn in rainfall,through-fall of canopy and shrub layer,and dripping of herb layer in Cinnamomum camphor plantation showed that the concentrations of test elements in rainfall varied with different month,and their monthly average concentrations decreased in the sequence of Ca>SiO_2>Zn>NH_4-N>K>NO_3-N>Fe>Mg>Mn>P>Cu.The concentrations of these elements in the through-fall of canopy and shrub layer and in the dripping of herb layer varied in the...
出处 《生态学杂志》 CAS CSCD 北大核心 2006年第7期747-752,共6页 Chinese Journal of Ecology
基金 国家自然科学基金项目(30271043) 国家科技部平台建设项目(20021220) 国家林业局重点科研项目(2001-07) 国家重点野外台站资助项目(2000-076)。
关键词 樟树人工林 降水化学 冠层淋溶 养分含量 Cinnamomum camphora plantation precipitation chemistry canopy leaching nutrient concentration.
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参考文献7

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