Stock market positive feedback trading and return autocorrelation .
证券市场正反馈交易与收益自相关。
For this reason it is often called autocorrelation .
因为这个原因，它常常被称作是自相关。
Results indicate that soil salinity of each soil layer shows the moderate spatial variability and spatial autocorrelation resulting from compound impact of intrinsic and extrinsic factors , and the autocorrelation distance of each soil layer varied insignificantly .
