中文摘要：

碳十四所测年代与实际日历年常有误差，所测3000年以远的标本，常短10％左右的年代。树轮校正的实质是使偏近的碳十四年代复原。石家河文化早期的时间当为3000B，C～2300B．C．，石家河文化晚期（或称后石家河文化）约为2400B．C～1900B．C．。石家河文化早、晚期大约有100年的过渡期。当一些地方进入后石家河文化时，另一些地方仍处在石家河文化阶段。

英文摘要：

Radiocarbon dating data is frequent shorter than the actual age for the specimens of 3000 years ago, and often is short a- bout 10%. The essence of Tree-ring correction is recovery the era of short Radiocarbon Dates. Shijile culture early age is 3000 B. C. 2300B. C. Shijiahe culture late age （ or called Post Shijiahe culture） era is about 2400 B. C. 1900B. C.. The era of Shijiahe cul ture early and late have about 100 years cross terms. While some places enter Post Shijiabe culture , the others are still in Shijiahe culture stage.