CAJ | 학술논문

通过对黄河三角洲地区C3植物稳定碳同位素组成以及土壤盐分的调查,初步探讨了C3植物δ13C与盐度的关系,揭示了环境因素对植物δ13C的影响.结果显示：黄河三角洲地区C3植物δ13C与盐度之间呈线性正相关关系（P〈0.005）,且随着盐度的增加,C3植物平均δ13C值呈偏正的趋势（P〈0.005）,土壤盐分是植物δ13C值的重要影响因素,单个植物种δ13C随盐度上升表现为增加和变化不明显2种模式,这与植物本身的遗传特性、耐盐性强弱等有关.
통과대황하삼각주지구C3식물은정탄동위소조성이급토양염분적조사,초보탐토료C3식물δ13C여염도적관계,게시료배경인소대식물δ13C적영향.결과현시：황하삼각주지구C3식물δ13C여염도지간정선성정상관관계（P〈0.005）,차수착염도적증가,C3식물평균δ13C치정편정적추세（P〈0.005）,토양염분시식물δ13C치적중요영향인소,단개식물충δ13C수염도상승표현위증가화변화불명현2충모식,저여식물본신적유전특성、내염성강약등유관.
Based on survey data,stable carbon isotope composition of C3 plants and soil salinity were determined in the Yellow River Delta area.The correlative analysis was done between δ13C of C3 plants and soil salinity,and influence of environmental factors on the δ13C values of plants were revealed.It was found that there were significantly positive correlation between δ13C of C3 plants and soil salinity（P0.005） and the average δ13C values of plants increased with salinity in the Yellow River Delta area（P0.005）.Soil salt is the important factor affectting the δ13C values of plants.For single C3 plant species,changes of δ13C with salinity showed two patterns,sianificant increase and unobvious tendency,which were relevant to hereditary property and salt-tolerance of plant itself.