Analysis of mass transfer processes derived from leaf litter among sabo r eachesin mountain streams.

山涧山溪流中落叶的传质过程分析。

• 批准号: 21580186
• 负责人: KITAMURA Hirokazu
• 金额: $ 2万
• 依托单位: Minami Kyusyu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21580186/
• 关键词: 渓流水質; 砂防構造物; リター動態; 溶出; イオン; 全窒素; 全炭素; 糖類; アラカシ; 成分溶出; 砂防施設立地環境; 透過型砂防ダム; 床固工群; 低ダム; アラカシリーフリター; 濃度分布; イオン組成; リター分解; 渓流環境; リーフリター; 水生昆虫摂食営巣行為; 低ダム群工法

The amount of allochthonous material is estimated to be considerable, and substances derived from the decomposition of leaf litter are thought to have an important impact on stream water quality. The purpose of the present study is to clarify the leaching characteristics of leaf litter of the evergreen species that are dominant in the riparian zone of the investigated stream and to examine the influence of leachates on mountain stream water ionic composition by laboratory leaching experiments and field measurements. It was infered that not all of the litter deposited at a sample site was decomposed in the site, as most litter input from riparian forests into lotic systems is transported downstream while being decomposed and that the marked decrease in the DO saturations in relation to the litter decomposition should occur in a site satisfing the conditions for promoting litter retention such channel configuration, the area of the riparian zone, the hydrological and substrate characteristics along the stream margin, the discharge characteristics of the stream, biological conditions such as shredder density, and so on. It was also indicated that the primarily source of ions is rock weathering in the spring and simultaneous ion loading from multiple sources occurs in the riffle, pool and side-pool and that leaf litter is one of the primary sources of K+, Mg2+and Ca2+in the stream water.

据估计，外来物质的数量相当大，从落叶分解而来的物质被认为对溪流水质有重要影响。本研究的目的是通过室内淋洗实验和野外测量，弄清所调查河流河岸带主要常绿树种凋落物的淋溶特征，并研究渗滤液对山溪水离子组成的影响。由此推断，并非所有样地的凋落物都被分解，因为从河岸森林输入到热带系统的大部分凋落物在分解时被运往下游，与凋落物分解相关的DO饱和度的显著下降应发生在满足促进凋落物保留的条件的地点，如河道形状、河岸带面积、河缘的水文和底质特征、溪流的排放特征和生物条件，如碎纸机密度等。春季离子的主要来源是岩石风化，冲沟、水池和侧池同时存在多种来源的离子负荷，枯枝落叶层是溪水K+、Mg2+、Ca2+的主要来源之一。

项目成果

Initial carbon and nitrogen contents and sugar rel ease characteristics in stream wate r during initial leaching of Quercu s glauca leaves

青栎叶初始浸出过程中溪水初始碳氮含量及糖释放特性

• 发表时间: 2012
• 期刊: Bulletin of Minamikyushu University
• 作者: 阿部悠太;細貝和彦,柴田勝;松本拡太,樋山麻美,細貝和彦,柴田勝;樋山麻美,松本拡太,細貝和彦,柴田勝;Hirokazu Kitamura
• 通讯作者: Hirokazu Kitamura

A case study on Leaching characteristics of Quercu s glauca leaves in Southern Kyusyu stream water

九州南部溪流中青栎叶的淋溶特性实例研究

• 发表时间: 2011
• 期刊: Bulletin of Minamikyushu University
• 作者: 阿部悠太;細貝和彦,柴田勝;松本拡太,樋山麻美,細貝和彦,柴田勝;樋山麻美,松本拡太,細貝和彦,柴田勝;Hirokazu Kitamura;Hirokazu Kitamura;Hirokazu Kitamura
• 通讯作者: Hirokazu Kitamura

A case study on Leaching characteristics of Quercus glauca leaves in Southern Kyusyu stream water

九州南部溪流中青栎叶的淋溶特性实例研究

• 发表时间: 2011
• 期刊: Bulletin of Minamikyushu University
• 作者: 阿部悠太;細貝和彦,柴田勝;松本拡太,樋山麻美,細貝和彦,柴田勝;樋山麻美,松本拡太,細貝和彦,柴田勝;Hirokazu Kitamura;Hirokazu Kitamura;Hirokazu Kitamura;Hirokazu Kitamura
• 通讯作者: Hirokazu Kitamura

Experimental study on leaching characteristics of cations from evergreen leaves submerged in water.

常绿叶片浸水阳离子浸出特性的实验研究

• 发表时间: 2010
• 期刊: Bulletin of Minamikyushu University 40A
• 作者: Hirokazu Kitamura;Miki Ijuin
• 通讯作者: Miki Ijuin

Initial carbon and nitrogen contents and sugar release characteristics in stream water during initial leaching of Quercus glauca leaves

青栎叶初始浸出过程中溪水初始碳氮含量及糖释放特性

• 发表时间: 2012
• 期刊: 南九州大学研究報告
• 作者: 阿部悠太;細貝和彦,柴田勝;松本拡太,樋山麻美,細貝和彦,柴田勝;樋山麻美,松本拡太,細貝和彦,柴田勝;Hirokazu Kitamura;Hirokazu Kitamura
• 通讯作者: Hirokazu Kitamura