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\hypersetup{pdftitle={Effect of Canopy Cover and Forest Floor Leaching on Base Cation Fluxes},pdfauthor={Hashem Habashi, Maryam Moslehi},pdfsubject={Tropentag 2010: Abstract},pdfkeywords={Base Cation, Canopy cover, Forest floor, percipitation Leaching},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 14-16, 2010, Zurich}}\\[1ex] \Large{``World Food System  ---\\A Contribution from Europe''\\[2ex]}}
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\Large{\textbf{Effect of Canopy Cover and Forest Floor Leaching on Base Cation Fluxes\footnote{\textbf{Contact Address:} Hashem Habashi, Gorgan University of Agricultural Sciences and Natural Resources, Forestry, Shahid Beheshti St, Gorgan, Iran, \mbox{e-mail}: \email{habashi@gau.ac.ir}}\\[0.8ex]}}
\normalsize{\textsc{Hashem Habashi$^{1}$, Maryam Moslehi$^{2}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$Gorgan University of Agricultural Sciences and Natural Resources, Forestry, Iran}}}
\item[]{\small{\textit{$^{2}$Gorgan University of Agricultural Sciences and Natural Resources, Forestry, }}}
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\index[author]{Habashi, Hashem}
\index[author]{Moslehi, Maryam}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Nutrients return to soil through litter decay and rainfall leaching from canopy cover and forest floor. Nutrient release from decomposition litter of tree species has long time (2--10 years) while rainfall leaching has very quickly (less than one year). Dry deposition and canopy leaching were added net cations to throughfall. Richen throughfall fluxes were come some of cations to the forest floor. Canopy cover and forest floor are important barriers in front of precipitation that during rainfall passes, base cations leached and added to soil. We measured canopy cover and forest floor leaching through one year year (January 2009 to February 2010) in mixed Beech forest by 100 collectors. 5 Beech species in Fageto-Carpinetum association were selected and data logger set under canopy cover. The below of forest floor in each canopy cover 15 container were sets. From 969.9 mm total precipitation, throughfall impart 708.7 mm (\mbox{73.1\,\%}) and forest floor leaching partakes 315.5 mm (\mbox{44.5\,\%}). Base cations included Na$^{+}$, K+, Ca2+ and Mg2+ in rainfall leachate from canopy cover were respectively 3.58, 9.33, 2.33 and 0.5 Kg ha$^{-1}$ .These cation contents in throughfall were significantly differences (\mbox{5\,\%}) with rainfall contents. Base cations existence in forest floor that richen by canopy cover leachate were respectively 1.77, 5.48, 1.18 and 0.37 Kg ha$^{-1}$ Na$^{+}$, K+, Ca2+ and Mg2+ that except Na$^{+}$ significantly more than rainfall contents. Linear relation were found between cation content in throughfall and forest floor leachate with rainfall intencity. Results emphasised the key role of canopy cover and forest floor on soil fertility. }

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\noindent \textbf{Keywords:} Base Cation, Canopy cover, Forest floor, percipitation Leaching
\index[key]{Base Cation}
\index[key]{Canopy cover}
\index[key]{Forest!floor}
\index[key]{Percipitation Leaching}
\end{document}