With the OLR data, the landfall and activity of tropical cyclones (TC) in southern China over a 20-year period (1975～1994) are studied. The result shows that the variation of the monthly anomalous OLR is somewhat tel...With the OLR data, the landfall and activity of tropical cyclones (TC) in southern China over a 20-year period (1975～1994) are studied. The result shows that the variation of the monthly anomalous OLR is somewhat teleconnected with the TC activity in southern China. The former is used to predict short-term climate for the latter over months with frequent or no TC influence. To some extent, the relationship between the TC activity in southern China and the monthly mean OLR anomalies is dependent on the climatological location of the subtropical high in northwestern Pacific region.展开更多
Research methods of predicting population of Clethrionomys rufocanus in a forest area of Changbai Mountains of Heilongjiang Province were studied from 1991 to 1996. At a representative coniferous-broadleaved mixed for...Research methods of predicting population of Clethrionomys rufocanus in a forest area of Changbai Mountains of Heilongjiang Province were studied from 1991 to 1996. At a representative coniferous-broadleaved mixed forest, the spring season’s captured rate, biomass of herb plants in July, and slopes were chosen as prediction factors to carry out investigation. The results of the autumn’s population of Clethrionomys rufocanus in various situations were analyzed by linear programming. The reliability of the results predicted by the captured rates was verified through actual investigation data. It indicated that spring season’s female captured rate of Clethrionomys rufocanus can generally predict its autumn population. On this basis, it should be combined with biomass of herbaceous plants in July to forecast autumn population a step further.展开更多
基金Foundation for the"Application of OLR data in tropical weather"as part of a short-termscientific research project under the Science and Education Department of the China Meteorological Administration'96。
文摘With the OLR data, the landfall and activity of tropical cyclones (TC) in southern China over a 20-year period (1975～1994) are studied. The result shows that the variation of the monthly anomalous OLR is somewhat teleconnected with the TC activity in southern China. The former is used to predict short-term climate for the latter over months with frequent or no TC influence. To some extent, the relationship between the TC activity in southern China and the monthly mean OLR anomalies is dependent on the climatological location of the subtropical high in northwestern Pacific region.
文摘Research methods of predicting population of Clethrionomys rufocanus in a forest area of Changbai Mountains of Heilongjiang Province were studied from 1991 to 1996. At a representative coniferous-broadleaved mixed forest, the spring season’s captured rate, biomass of herb plants in July, and slopes were chosen as prediction factors to carry out investigation. The results of the autumn’s population of Clethrionomys rufocanus in various situations were analyzed by linear programming. The reliability of the results predicted by the captured rates was verified through actual investigation data. It indicated that spring season’s female captured rate of Clethrionomys rufocanus can generally predict its autumn population. On this basis, it should be combined with biomass of herbaceous plants in July to forecast autumn population a step further.
