지표식물 13C Wheat Uniformly 13C Wheat 13C Wheat-leaf/stem, root, straw 지표식물 13C Maize/ 13C Corn Uniformly 13C Maize 13C Maize leaf/stem, root, straw 지표식물 13C White Willow / 13C Golden Willow Uniformly 13C White Willow/ 13C Golden Willow 13C White willow leaf/stem 지표식물 13C Red fescue Uniformly 13C Red fescue 13C Red fescue leaf 지표식물 13C Beech Uniformly 13C Beech 13C Beech leaf 지표식물 13C Barrel medic Uniformly 13C Barrel medic 13C Barrel medic leaf/stem, root 지표식물 13C Tobacco Uniformly 13C Tobacco 13C Tobacco leaf/stem 지표식물 13C Rice Uniformly 13C Rice 13C Rice leaf/stem, root, straw 지표식물 13C Black alder / 13C Common alder / 13C European alder Uniformly 13C Blakc alder 13C Black alder leaf/stem