형태 및 생육지표에 기반한 중국 허베이성 친황다오 해안경관 향토식물의 내염성 평가 = An Evaluation on Salinity Tolerance of Native Plants in the Coastal Landscape of Qinhuangdao, Hebei Province, China, Based on Morphology and Growth Indicators

국문 초록 (Abstract)

본 연구는 식물 형태 및 성장 지표를 기반으로 친황다오 해안지역의 10가지 향토식물의 내염성을 평가하여 내염성 식물의 육종 및 정원 적용에 대한 참고 자료를 제공하기 위해 시도되었다. 10종의 토종식물 묘목을 0.0%, 0.2%, 0.4%, 0.6%, 0.8%, 1.0% NaCl 용액으로 물 배양기에 스트레스를 가하여 식물의 높은 성장 스트레스 지수, 염해지수, 염해율, 생존율을 계산하여 내염성 평가를 진행하였다. 그 결과 염분 스트레스는 친황다오 해안지역에서 10종의 토종 식물의 성장을 다양한 정도로 억제했으며, 염분 농도가 증가함에 따라 식물의 높은 성장 스트레스 지수, 염분 손상 지수 및 염분 손상 비율은 증가하는 경향을 보였고 생존율은 전반적으로 감소하는 경향을 보였다. 식물에 따라 염분 스트레스에 대한 반응정도가 다르며, 클러스터 분석과 소속 함수 분석을 통해 친황다오 해안지역의 10가지 향토식물은 극내염성인 뜰보리수(Elaeagnus multiflora), 고내염성 족제비싸리(Amorpha fruticosa), 용버들(Salix matsudana), 광대 싸리(Flueggea suffruticosa), 중내염성 호비수리(Lespedeza davurica), 아까시나무(Robinia pseudoacacia) 그리고 민감식물인 장구밥나무(Grewia biloba var. parviflora), 모감주나무(Koelreuteria paniculata.), 좀목 형(Vitex negundo var. heterophylla) 그리고 싸리(Lespedeza bicolor) 등 4개 유형의 내염성 식물군으로 나눌 수 있다. 이중 종합평가는 1위를 차지한 뜰보리수는 염습지 등 해안지역의 조경재료로 매우 탁월한 것으 로 밝혀졌다.

다국어 초록 (Multilingual Abstract)

Salt tolerance of 10 native plants in Qinhuangdao coastal area was evaluated in order to supply abundant materials against salt stress for plant landscape design. Identification of salt tolerance of 10 native plants was conducted in a hydroponic incubator under 0.0%, 0.2%, 0.4%, 0.6%, 0.8% and 1.0% NaCl， respectively. 4 indicators such as plant height growth stress index, salt injury index, salt damage rate and survival rate were determined. Cluster analysis and membership function analysis were used to evaluate the salt tolerance. The results showed that the growth of 10 native plants in Qinhuangdao coastal area was inhibited under salt stress. The plant height growth stress index, salt injury index and salt damage rate increased as the NaCl concentration increased, with a decrease in survival rate. 10 native plants in Qinhuangdao coastal area were divided into 4 grades according to the salt tolerance by membership function analysis and cluster analysis, including a highly salt tolerant plant，3 salt tolerant plants, 2 moderately salt tolerant plants and 4 salt sensitive plants. Elaeagnus multiflora could be used as a greening plant material under salt environment according to the evaluation result.

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