摘要
近１０多ａ来，华南沿海地区大量全新世孢粉分析的结果表明，沉积物中某些植物花粉和蕨类孢子近５０００ａ以来发生了显著的变化．这些变化除了可能与气候和海平面波动有关以外，很大程度上与人类活动有关，特别是稻作农业有密切的联系．本文试图从某些孢粉的含量变化结合...
Abstract Pollen record of the sediments can not only reconstruct paleovegetation and paleoclimate, but also reveal the human disturbance to the vegetation. The pollen of rice, counted in the fossil record, for example, demonstrates historic human agronomic activities, While the increase of Pinus and Dicranopteris suggests the expansion of grassland and savanna formations caused by human impact. The present study shows that three stages of human disturbance can be recognized by pollen records: the first stage of disturbance was from 3 000/4 000 to 1 000 years BP, of which the sites were mostly located in the coastal areas such as flood plains and river delta plains; The second stage was from 1 000 years BP to Qing Dynasty when human impact extended even in the inland mountains, that coincides with a large scale immigration of the Han Chinese to the hilly areas of Southeast China; The latest stage was since about 200 years that was characterized by the rise of Pinus and somewhere Gramineae, as shown in the top most samples of some profiles and the surface samples. The above fossil pollen percentage variations can link with the origin and the development of rice and can be closely correlated with historic Chinese population variations and immigrations to the Southeast China.
出处
《生态科学》
CSCD
1998年第2期29-36,共8页
Ecological Science
