The chemical composition of 86 species of native plants in Korea, including plants to be afforestation, was analyzed. The chemical composition of the species analyzed was different. The species with the highest extractable content was Viburnum dilatatum (3.91%), and the species with the lowest extractable content was Ligustrum lucidum (0.11%). The lignin content ranged from 12 to 39%, with an average of 25%. The species with the highest lignin content was Chaenomeles lagenaria (39.37%). Hemicellulose content ranged from 18 to 52%, with the highest species being Thuja occidentalis (51.22%) and Eucommia ulmoides (48.84%). Cellulose content ranged from 25 to 58%, and the species with the highest content were Prunus serrulata (57.67%), Diospyros kaki (57.14%), Aesculus turbinata (53.29%), Albizia julibrissin (53.02%), and Zelkova serrata (52.29%). The chemical composition was different for each use taxon of 86 plant species. The lignin content was the highest in the fruit group and the lowest in the group other than recommended species for afforestation. Cellulose content was highest in non-reforestation-recommended tree species and lowest in fruit trees. In classification according to tree height, lignin content was higher in shrubs than in tall trees, and cellulose content was highest in tall trees. Between deciduous and evergreen trees, the lignin content was high in deciduous trees (26.46%), and the cellulose content was also high in deciduous trees (44.01%). As a result of analyzing the correlation between each compound, there was a difference. There tended to be a positive correlation between extractives and lignin content. There was a negative correlation between extractives and holocellulose content, hemicellulose and cellulose. The higher extract content affected the cellulose content much more than hemicellulose. Also, the higher the lignin content, the lower the cellulose content. The species with low lignin content and high cellulose content were Diospyros kaki and Prunus serrulata var. spontanea. This result is expected to be primary data for bioenergy, pulp industry and bioindustry.

Introduction
Materials and Methods
    1. Materials and sample treatment
    2. Analysis of extractives content
    3. Analysis of lignin content
    4. Analysis of hemicellulose and α-cellulose content
    5. Observation of pretreated cellulose by SEM
    6. Statistical analysis
Results and Discussion
    1. Extractives content
    2. Lignin content
    3. Holocellulose content
    4. Cellulose content
    5. Cellulose surface changes according to pretreatment
    6. Tree species recommended for afforestation
    7. Chemical composition depending on tree height
    8. Chemical composition depending on evergreenand deciduous trees
    9. Relationship among wood chemical composition
    10. Selection of species with low lignin content andhigh cellulose content
Acknowledgement
References

• Hak Gon Kim(Researcher, Forest Research Department, Gyeongsangnam-do Forest Environment Research Institute, Jinju, 52615, Korea)
• Seong Hyeon Yong(Researcher, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 52828, Korea)
• Do Hyun Kim(Graduate student, Department of Environmental Forest Science, Gyeongsang National University, Jinju, 52828, Korea)
• Kwan Been Park(Graduate student, Department of Environmental Forest Science, Gyeongsang National University, Jinju, 52828, Korea)
• Seung A Cha(Graduate student, Department of Environmental Forest Science, Gyeongsang National University, Jinju, 52828, Korea)
• Ji Hyun Lee(Graduate student, Department of Environmental Forest Science, Gyeongsang National University, Jinju, 52828, Korea)
• Seon A Kim(Graduate student, Department of Environmental Forest Science, Gyeongsang National University, Jinju, 52828, Korea)
• Jae Kyung Yang(Professor, Depatment of Environmental Material Science & Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 52828, Korea)
• Myung Suk Choi(Professor, Department of Environmental Forest Science & Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 52828, Korea) Corresponding author