摘要：At six sampling sites in northwestern Latvia Scots pines ( Pinus sylvestris L.) were cored to obtain tree-ring width data and determine site pointer-year values (years with markedly wider or narrower tree-ring width compared to neighboring tree-rings). Correlation analysis was performed between pointer-year values and climatic factors (mean temperatures and precipitation sum) to determine signifi cant relationships. Th ere were only three years (negative 1940 and 1969, positive 1957), when all sampling sites had common pointer-years. Th e main climatic factors in. uencing development of pointer-years were February mean temperatures and June precipitation sum. Pointer-year development is mainly determined by local factors
