欧氏距离系数在农业气候相似性研究中的应用

THE USE OF DISTANCE COEFFICIENT IN THE RESEARCH ON AGROCLIMATOLOGICAL RESEMBLANCE

本文根据地理纬度板为相近的中国河北省和美国密苏里州各13个有代表性的气象站点的30年(1951—1980年)气候资料,采用计算欧氏距离系数的方法,就5组指标(包括气候指标和农业气候指标)分析了两地区之间气候、农业气候、冬小麦气候和春玉米气候的异同及其相似区,并对欧氏距离系数反映农业气候相似程度的可靠性进行了探索,从而为以上两地区之间引进和驯化优良品种以及其它农业技术交流提供了农业气候依据,并对两地区之间各种作物的气候生产力、农业技术和各种农业问题(如作物生态、农业土壤、农业病虫害等)的比较性研究具有促进作用。

Similarities and differences in the climate and the crop climate betweenMissouri, America and Hebei province, China are analyzed and their agro-climatological analogous areas are thus located based on the calculationof the distance coefficients.Besides, the reliability of reflecting the simi-lar extent of climate and agroclimate by distance coefficients is examinedand described, thereby providing agroclimatological basis for introducingand taming fine crop varieties and exchanging agrotechniques betweenthe two regions.