樟树人工林生态系统不同层次穿透水水化学特征

生态学杂志

樟树人工林生态系统不同层次穿透水水化学特征

陈书军^1，2；田大伦²；闫文德²；项文化²

¹西北农林科技大学林学院，杨凌　712100；²中南林业科技大学生态研究室，长沙　410004

收稿日期:2005-09-28 修回日期:2006-04-10 出版日期:2006-07-10 发布日期:2006-07-10

Hydrochemical characteristics of through-fall in different layers of Cinnamomum camphora plantation.

CHEN Shujun^1，2; TIAN Dalun²;YAN Wende²;XIANG Wenhua²

¹College of Forestry, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China; ²Research Section of Ecology, Central South University of Forestry & Technology, Hangsha 410004, China

Received:2005-09-28 Revised:2006-04-10 Online:2006-07-10 Published:2006-07-10

摘要/Abstract

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。

关键词: 矿区, 生态规划, 可持续发展

Abstract: The measurement of nutrient elements N, P, SiO₂, 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 concentratons decreased in the sequence of Ca＞SiO₂＞Zn＞NH₄-N＞K＞NO₃-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 same way and changed seasonally, most of which were increased. The concentration sequence of the elements in the throughfall of canopy, throughfall of shrub layer, and dripping of herb layer was 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, and Ca＞NH₄-N＞K＞SiO₂＞NO₃-N＞Mn＞Mg＞Zn＞Fe＞P＞Cu, respectively. The Fe concentration in the through-fall of canopy and shrub layer as well as the Fe and Zn concentrations in the dripping of herb layer were lower, while the concentrations of other elements were higher than those in the rainfall. Element enrichment except that of NO₃-N, Fe and Zn was stronger in the dripping of herb layer than in the through-fall of canopy and shrub layer.

Key words: Mineral region, Ecological planning, Sustainable development

陈书军；田大伦；闫文德；项文化 . 樟树人工林生态系统不同层次穿透水水化学特征[J]. 生态学杂志.

CHEN Shujun^1，2; TIAN Dalun²;YAN Wende²;XIANG Wenhua² . Hydrochemical characteristics of through-fall in different layers of Cinnamomum camphora plantation. [J]. cje.

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