Korean water deer (Hydropotes inermis argyropus) is an endemic subspecies and one of the common species in Korea. However, deer have been threatened by human activities, which have resulted in the population decrease. To conserve and manage their populations, understanding Korean water deer's habitat characteristics, which depend on the structure of the landscape, and identifying the relationship between those would be a key component. Our main aim was first to make landcover maps from remote sensing imagery, and to determine some habitat metrics for Korean water deer at two different home range scales (25 ha and 100 ha), and finally to compare them between habitat and non-habitat of the Korean water deer. This study analyzed spatial patterns at two scales in the Chungnam province environment by using the PCA-ECHO classification technique based on Landsat ETM+ remote sensing data (2001) and 19 habitat metrics. Study results show that habitat metrics for forest and open areas are more obviously distinguished within a 25 ha home range scales. Especially, more continuous and less fragmented forest patches and open area patches with a high edge density and connectivity were the main characteristics of Korean water deer's habitat. As a part of habitat management, these results could be used as a good proxy for assessing the habitat quality of Korean water deer.

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Terpenoids such as isoprene and monoterpenes are major compounds emitted from plants, and contribute to the formation of photochemical oxidants and secondary organic aerosols in the troposphere. In this study, a portable terpenoid sampling devise was developed for a relaxed eddy accumulation (REA) method to measure the terpenoid flux above forests. The devise was light in weight, approximately 8 kg, and easy to carry. Performance tests of the REA system were conducted to determine collection efficiency of atmospheric terpenoids. When suction resistance was largely different between sampling and dummy lines, the recovery ratio of isoprene standard gas decreased with an increase in frequency of line switching. In case of no difference in the suction resistances, the recovery ratio was more than 90%, even if the frequency of line switching was fast (5 Hz). Carbon dioxide fluxes above a Japanese larch (Larix kaempferi) forest were determined simultaneously with the REA method using this devise and with the widely-used eddy covariance method. A good agreement was observed between the REA- and EC-CO₂ fluxes (r² = 0.89). Using the REA sampling devise terpenoid fluxes above the larch forest were measured during summer campaign. Mean isoprene and monoterpene fluxes during the daytime were 1.2 nmol m^-2 s^-1 and 0.65 nmol m^-2 s^-1, respectively. This monoterpene flux value is similar to those reported for Japanese red pine and Scots pine forests.

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