ISSN 1000-0526
CN 11-2282/P

Volume 22,Issue 12,1996 Table of Contents

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  • 1  climatology and the Dialectic Thinking of Ancient China
    1996, 22(12):3-5. DOI: 10.7519/j.issn.1000-0526.1996.12.001
    [Abstract](463) [HTML](0) [PDF 239.59 K](480)
    The article highlights the importance of philosophical reasoning in climatology with an overview of the ancient Chinese climatological knowledge and the modern climate problems. As the priority of Chinese ancient scientific thinking indicated by some western scientists,it is pointed out that modern climatology is facing a conceptual change in the course of her development.
    2  The Method for Estimating Grain Crop Output
    王建林 太华杰
    1996, 22(12):6-9. DOI: 10.7519/j.issn.1000-0526.1996.12.002
    [Abstract](471) [HTML](0) [PDF 227.45 K](582)
    By studying the distribution of net primary productivity (NPP) of natural vegetation and spatial and temporal variation of grain crop biomass (Gcb) in China and their relationships,a crop output estimating; method was established.
    3  New Advances of the Decision Support System for Agrotechnology Transfer(DSSAT)
    罗群英 林而达
    1996, 22(12):10-13. DOI: 10.7519/j.issn.1000-0526.1996.12.003
    [Abstract](496) [HTML](0) [PDF 296.85 K](546)
    DSSAT V3 is a relatively well-established crop production and management computer decision support system at the present stage. Comparing to its predecessor DSSAT V2. 1 ,the version V3 is much more flexible and has more functionality for data base manipulation and model applications. New features concerning about DSSAT V3 have been expounded in terms of its shell and crop models.
    4  Worksheet Structure of Database in the Weather Forecasting
    郭有明 冯祥胜
    1996, 22(12):14-16. DOI: 10.7519/j.issn.1000-0526.1996.12.004
    [Abstract](545) [HTML](0) [PDF 212.46 K](511)
    The logical structure of database in the weather forecasting is worksheet. The definition of worksheet is a relational data model. It shows that worksheet is better to describe the state of weather elements in the 4-dimensions and more useful in the operation of Man-Computer interactive System. People can get more helps from relational database by the technique.
    5  Applied Software on the Forecasting Aircraft Icing
    李子良 潘微多
    1996, 22(12):17-19. DOI: 10.7519/j.issn.1000-0526.1996.12.005
    [Abstract](952) [HTML](0) [PDF 574.71 K](601)
    The relationship between aircraft icing and meteorological conditions was analysed,and the forecasting equat.ons of aircraft icing were used to program. The structure,function and its effectiveness of the applied software were mainly introduced. The results provide a reference for implementing computerization of the aeronautic meteorological elements prediction.
    6  Satellite Images Analysis of a Mesoscale Convective Complex in August 1993
    刘玉芝 邹树峰 王广春
    1996, 22(12):20-23. DOI: 10.7519/j.issn.1000-0526.1996.12.006
    [Abstract](575) [HTML](0) [PDF 1.14 M](595)
    Infrared satellite images from GMS-4 were used to document the growth and development of a severe Mesoscale Convective Complex (MCC) that occurred near N—NW periphery of the subtropical high on 4—5 August 1993.
    7  The Monitoring Method of Snowcover in Qinghai Province
    周咏梅 王江山
    1996, 22(12):24-26. DOI: 10.7519/j.issn.1000-0526.1996.12.007
    [Abstract](402) [HTML](0) [PDF 550.21 K](506)
    The theory, method and data processing procedure of snowcover monitoring using the AVHRR data is described. A operational system for monitoring snowcover has been established. The resuhs show that the method is very useful It can be used to measure the snow depth,estimate the snowcover area and calculate the extent of snowcover.
    8  Application of A Step-by-step Approximation Method in Forecasting Tropical Storm's Motion
    1996, 22(12):27-30. DOI: 10.7519/j.issn.1000-0526.1996.12.008
    [Abstract](493) [HTML](0) [PDF 572.93 K](496)
    By comparing experimental results of a step-by-step approximation method with tropical storm forecasts issued by other weather services in China and some international services, and with experimental outputs from some domestic objective forecasting methods during tropical storms season in 1995,it is pointed out that the step-by-step approximation method has good ability in forecasting recurvature of tropical storm's track. The 48 hours mean distance error of the results was less than 300km. The method has more advantages than other objective forecasting methods especially when a tropical storm changed its motion speed markedly.
    9  The Contrast Analysis on Effect of Hail Suppression
    王雨曾 刘新元 赵宗然 冉永海
    1996, 22(12):31-34. DOI: 10.7519/j.issn.1000-0526.1996.12.009
    [Abstract](504) [HTML](0) [PDF 1.35 M](554)
    The effect of artificial hail suppression is obviously in the area change of hail damage during 10 years at Mancheng county in Hebei province. The area of hail damage decreased 45% and 90% respectively in the mountains and the plains of this county as compared with historicol data. The difference in two regions was also caused by the artificial hail suppression.
    10  The Area Distribution Law of the Mean-years Annual Precipitation
    1996, 22(12):35-39. DOI: 10.7519/j.issn.1000-0526.1996.12.010
    [Abstract](485) [HTML](0) [PDF 2.11 M](505)
    The mean-years annual precipitation in three areas, the national range,Xinjiang Autonomy and the Urumchi River valley was analysed. The result shows that there is a functional relationship between the mean-years annual precipitation and its area,the relationship is a negative exponential distribution. The method can be used to (1) describe quantitatively the precipitation state in a climatic region ,and (2) estimate the mean-years annual precipitation in the regions without rainfall station by the flow-off of the river water and calculate some hydrometeorological parameters.
    11  A Preliminary Study on the Relationship between the Seasonal Transition of Autumn to Winter and the Drought/Flood of Next Year
    王莘芳 汪克付
    1996, 22(12):40-42. DOI: 10.7519/j.issn.1000-0526.1996.12.011
    [Abstract](518) [HTML](0) [PDF 573.97 K](597)
    Based on mean daily temperature, the characteristics of the transition from autumn to winter are classified into four types. The relationship between the different type and the drought/flood summer of next year are discussed. By using the relationship,long-term forecasts of the drought/flood in summer are made and the results are fair good.
    12  The Primary Study on Crop Harvest Dynamical Prediction Agricultural Products Purchase Fund Plan
    冯定原 王宇翔 孙景雷
    1996, 22(12):43-47. DOI: 10.7519/j.issn.1000-0526.1996.12.012
    [Abstract](512) [HTML](0) [PDF 1.41 M](551)
    Based on specific analysis of crop mature period and yield estimates and coupled with historical data of agricultural products purchase progress,the dynamical prediction model of crop harvest was established. It is possible thereby to make a reasonable detailed plan of fund supply for purchase.
    13  An Optimization on the Yield Structure for Winter Wheat in Xuhuai Region of Jiangsu Province
    高苹 武金岗 陶炳炎 汤志成
    1996, 22(12):48-50. DOI: 10.7519/j.issn.1000-0526.1996.12.013
    [Abstract](517) [HTML](0) [PDF 190.46 K](548)
    A study on yield structure optimization was conducted by investigating the occurrences and changes of winter wheat yield components and their interaction. The linear programming method was used in the yield structure optimization. The model is very useful to the production of winter wheat in this region.

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