自然资源学报 ›› 1991, Vol. 6 ›› Issue (1): 71-79.doi: 10.11849/zrzyxb.1991.01.008

• 论文 • 上一篇    下一篇

黄土高原湿润期特点与农业生产布局

王菱, 倪建华   

  1. 中国科学院国家计划委员会自然资源综合考察委员会
  • 出版日期:1991-03-25 发布日期:1991-03-25

THE CHARACTERISTICS OF THE HUMID PERIOD AND THE RATIONAL LAYOUT OF THE AGRICULTURAL PRODUCTION IN THE LOESS PLATEAU

Wang Ling, Ni Jianhua   

  1. Commission for Integrated Survey of Natural Resources, Chinese academy of Sciences
  • Online:1991-03-25 Published:1991-03-25

摘要: 本文利用黄土高原208个气象台(站)的历年旬降水量与计算的旬潜在蒸发量之比(R/PE),经过10旬滑动平均计算,确定了湿润期(G)及变差系数(C)、播种雨开始期(S)及其标准差(δ)和干旱指数(A),同时还计算了湿润期内出现的干旬(D)、湿旬(W)及其标准差(β、α)。湿润期及其变量的研究,对合理安排农业生产具有重要意义。

关键词: 黄土高原, 湿润期, 干旱指数, 农业生产合理布局

Abstract: In this paper the data on the humid period and its parameters are used to assess the agricultural production of the Loess plateau.The mean humid period (G) and its coefficient of variation (C) and aridity index (A) are related to the cropping system and the risk level of agricultural production.The mean wet (W) and dry (D) spells within the humid period and their standard variations (α,β) are related to the possible drought and water-logging disasters.The above-mentioned parameters can be also used to assess the agricultural climatic environment and the agricultural production potential of the Loess Plateau.

Key words: Loess Plateau, humid period, aridity index, rational layout of agricultural production