巴彦淖尔市小网格植物气候生产力的演变

Evolvement of 1km grid Plant Climate-productivity in Bayannoer

采用桑斯维特纪念模型,分别计算了巴彦淖尔市11个气象站及其周边5个气象站1971-2000年不同年代的植物气候生产力,建立了植物气候生产力与地理因素关系的数学模型,利用地理信息系统软件(Citystar4.0)将1km×1km网格上的植物气候生产力进行可视化处理。此估算结果全面系统地表现了巴彦淖尔不同年代植物气候生产力的空间分布状况。共同点是:在不同年代由东南向西北植物气候生产力呈减少的趋势。不同点是:1991-2000年,降水多、温度高,植物气候生产力水平最好;1971-1980年,降水多、温度低,植物气候生产力水平次之;1981-1990年,降水少,温度适中,植物气候生产力水平最差。

Plant climatic productivities of 16 weather stations around this region were calculated from 1971 to 2000 by Thornthwaite—Memorial.Mathematical model which reflected the relationship between plant climatic productivity and geographic factor was established.Visualization of plant climatic productivities for 1km grid was carried on by using GIS.This estimation result totally and systematic reflected the space distribution status of plant climatic productivity in different date in Bayannoer.The common point was that the plant climatic productivity declined from southeast to northwest.The different point was that the highest plant climatic productivities were from 1991 to 2000 because of more precipitation and higher temperature,the middle plant climatic productivities were from 1971 to 1980 because of more precipitation and lower temperature,the lowest plant climatic productivities were from 1981 to 1990 because of small precipitation and neutral temperature.