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\hypersetup{pdftitle={Assessing the Potential Tree Line and Suitable Areas for Afforestation in the Chong"=kemin National Park, Kyrgyzstan},pdfauthor={Andreas Rechenmacher, Markus Immitzer, Harald Vacik},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Climate, livelihood , natural resources, remote sensing, spatial analysis},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\Large{\textbf{Assessing the Potential Tree Line and Suitable Areas for Afforestation in the Chong"=kemin National Park, Kyrgyzstan\footnote{\textbf{Contact Address:} Harald Vacik, University of Natural Resources and Life Sciences (BOKU), Department of Forest and Soil Sciences, Peter Jordanstr. 82, 1190~Vienna, Austria, \mbox{e-mail}: \email{harald.vacik@boku.ac.at}}\\[0.8ex]}}
\normalsize{\textsc{Andreas Rechenmacher$^{1}$, Markus Immitzer$^{2}$, Harald Vacik$^{3}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Natural Resources and Life Sciences (BOKU), Institute of Silviculture, Department of Forests and Soil Sciences, }}}
\item[]{\small{\textit{$^{2}$University of Natural Resources and Life Sciences (BOKU), Institute of Surveying, Remote Sensing and Land Information, Department of Landscape, Spatial and Infrastructure Sciences, }}}
\item[]{\small{\textit{$^{3}$University of Natural Resources and Life Sciences (BOKU), Department of Forest and Soil Sciences, Austria}}}
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\index[author]{Rechenmacher, Andreas}
\index[author]{Immitzer, Markus}
\index[author]{Vacik, Harald}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Although forests cover less than \mbox{5.6\,\%} of the territory of the Kyrgyz Republic, they are a valuable natural resource, which use allows overcoming poverty and increasing living standards in rural areas. The livelihoods of local people strongly depend on forest products such as fruits, nuts, firewood and honey. With the increasing human settlement the mountain forests have been exploited for timber, fuel wood, and charcoal in recent years. These unsustainable land use practices, along with hay"=making and over"=grazing of cattle, sheep and goats, have resulted in a decline of the yields of forest products and the degradation of the natural regeneration. The long"=term objective for the State Agency of Environmental Protection and Forestry of the Kyrgyz Republic is to increase the forest cover up to \mbox{6\,\%} by 2025 --- 2030. Choosing only suitable areas for afforestation can be rather difficult under an arid, mostly continental influenced climate. The potential forest distribution can be considered as a function of topography and climate parameters. In Central Asian Mountain areas, water supply during the vegetation period is often a limiting factor for trees to establish. On South oriented slopes, forests are mostly missing due to the above"=mentioned dry periods in summer months and a high irradiation due to clear skies. This contribution aims to estimate the potential forest tree line and deviation from the current forest distribution with remote"=sensing data as a basis for further afforestation planning. Using different types of digital spatial data (forest map, satellite images, digital terrain models, global irradiation, temperature and precipitation) the limits for forest growth are modelled in the Chong-Kemin National Park, Kyrgyzstan. The gap between the potential tree line and the actual upper and lower forest line is used as an indicator for a possible anthropo"=zoogenic influence on today's forest distribution. Additionally trends in global climatic change are compared with local weather data (changes in precipitation patterns and temperatures) to allow for a prediction of a possible upward shift of the potential tree line. Recommendations for afforestation planning and a sustainable use of natural resources are given based on a spatial analysis.}

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\noindent \textbf{Keywords:} Climate, livelihood , natural resources, remote sensing, spatial analysis
\index[key]{Climate}
\index[key]{Livelihood!}
\index[key]{Natural!resources}
\index[key]{Remote sensing}
\index[key]{Spatial!analysis}
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