CAJ | 학술논문

在中国东部连续的尘土孢粉样基础上,用转换函数的方法研究中国东部孢粉与气候的定量关系.研究结果证明,中国东部现代花粉的分布与年均温有密切关系,某些草本植物花粉之间的含量变化很大程度上与太阳辐射量和不同纬度的温度变化有关.因此定量重建古植被带的迁移及古气候的变化就成为可能.通过对比,选择Artemisia与Poaceae的比值作为温度替代指标.Arte/Poac与纬度相关系数的平方值(R2)为0.9579,它与年均温的相关系数平方值也达到0.9162.用回归方程定量重建了中国东部海域钻孔DGKS-9602的古气候,由于末次盛冰期草本植物花粉丰富,获得的气候值可信度最好,即年均温比现代降低了8.C左右(6-10.C),植被带向南推移了约8-10纬度,这一结果与前人的研究结果基本吻合.
재중국동부련속적진토포분양기출상,용전환함수적방법연구중국동부포분여기후적정량관계.연구결과증명,중국동부현대화분적분포여년균온유밀절관계,모사초본식물화분지간적함량변화흔대정도상여태양복사량화불동위도적온도변화유관.인차정량중건고식피대적천이급고기후적변화취성위가능.통과대비,선택Artemisia여Poaceae적비치작위온도체대지표.Arte/Poac여위도상관계수적평방치(R2)위0.9579,타여년균온적상관계수평방치야체도0.9162.용회귀방정정량중건료중국동부해역찬공DGKS-9602적고기후,유우말차성빙기초본식물화분봉부,획득적기후치가신도최호,즉년균온비현대강저료8.C좌우(6-10.C),식피대향남추이료약8-10위도,저일결과여전인적연구결과기본문합.
The large-scale data set of dust pollen samples covers the tropical-temperate climate transition area of easternChina. The results show that some ratios of pollen taxa have close relation with latitude and likely with climate. The presentstudy discovers an interesting relation between the ratio of Artemisia/Poaceae and the latitude. The R2 value of Arte/Poac forlatitude is as high as 0.9579, and for the mean annual temperature ＞0.9162. The paper attempts to reconstruct the paleoclimateof LGM for a core in the East China Sea by means of regression equation. The estimated mean annual temperature at LGM wasabout 8° C (6-10° C) lower than today and the vegetation zone shifted southward by about 8-10 latitude degrees.