中国蓼科花粉类型的地理分布格局及其与生态因子的关系  

Geographic Distribution Patterns of Pollen Types in Polygonaceae of China and Their Relationship to Ecological Factors

作　　者：周忠泽[1] 李玉成[1] 张小平[2] 许仁鑫[1] 

机构地区：[1]安徽大学生命科学学院,安徽合肥230039 [2]安徽师范大学生命科学院,安徽芜湖241000

出　　处：《地理科学》2003年第2期169-174,共6页Scientia Geographica Sinica

基　　金：安徽省自然科学基金项目 (No .990 42 411;0 30 4310 1);科技部攀登项目 (No .99-预 -4 5 )

摘　　要：从蓼科植物的孢粉类型角度 ,研究了中国蓼科花粉类型的地理分布格局及其与生态因子的关系。根据中国蓼科植物赖以生存的生态因子 ,得出中国蓼科花粉类型分布区的主要生态因子 ,包括地理位置 (分布中心 )、海拔高度、年降水量、年积温及生境数量。在此基础上 ,根据同一区域内相同或相似的生态环境条件下分布的现代蓼科各种花粉类型 ,确定一定花粉类型组合所指示的现代气候和环境 ,为利用地层中蓼科化石花粉重建古气候。In the present paper, geographic distribution patterns of pollen types of Polygonaceae and their relationship to ecological factors are first introduced. Geographic ditribution centre of Atraphaxis-type, Calligonum-type and Aviculare-type is located in the northwestern China, but they differ in other factors. Atraphaxis-type and Calligonum-type are in the habitats of gobi desert and sandy land with altitudes from 300 to 800 m, annual precipitation from 20 to 200 mm, annual accumulated temperature from 1600℃ to 3400℃; Aviculare-type is in the habitats of arid hillside,calcareous desert and flood grassland with altitudes from 400 to 2000 m,annual precipitation from 200 to 800 mm,annual accumulated temperature from 1600℃ to 4500℃. Geographic ditribution centre of Rheum-type, Koenigia-type and Acetosa-type is located in Northwest China and Southeast China, but they differ in other factors. Rheum-type is in the habitat of mountain slope of cold high mountain area with altitudes from 2000 to 4000 m, annual precipitation from 50 to 400 mm, annual accumulated temperature from 1600℃ to 2000℃; Koenigia-type is in habitat of meadow in summit of a mountain with altitudes from 2000 to 4900 m, annual precipitation from 300 to 800 mm, annual accumulated temperature from 600℃ to 3000℃; Acetosa-type is in habitats of wetlant in mountain valley and near river with altitudes from 450 to 3100 m, annual precipitation from 200 to 800 mm, annual accumulated temperature from 1600℃ to 6000℃. Geographic ditribution centre of Aconogonon-type, Cephalophilon-type and Polystachyum-type is located in Southwest China. They are in habitats of shrubbery and grassland on mountain slope and wetland in mountain valley with altitudes from 1000 to 3000 m, annual precipitation from 400 to 1600 mm. Geographic ditribution center, habitats, altitudes and annual precipitation of Fagopyrum-type resemble that of Aconogonon-type, Cephalophilon-type and Polystachyum-type, but they differ in annual accumulated temperature. Fagopyrum-type

关 键 词：中国 蓼科植物 孢粉类型 地理分布 生态因子 地理位置 海拔高度 年降水量 年积温 生境数量 古环境 古气候 多样性 

分 类 号：Q949.744[生物学—植物学] P532[天文地球—古生物学与地层学]