摘要
通过对准格尔旗气候生产潜力及其水热因子、粮食单产的时间序列分析，揭示了气候波动对粮食生产变化的制约关系：在目前旱农为主的农业生态系统中，降水多寡的年际变化是导致粮食生产不稳定的根本原因，降水的分配状况可加强或削弱这种作用。
Based on the analysis of time sequences of climatic potential productivify,composed factors of temperature and moisture,and crop yields in Zunger County,this thesis shows the following mechanism of instability of crop yields controlled by climatic fluctuation:With the agri-ecosystem formed mainly by dry farmlands,the annual fluctuation of precipitation results in the instability of crop yields,and the sea sonal distribution of precipitation strengthens or weakens the controlling action.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1994年第4期525-528,共4页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金
关键词
气候生产潜力
时间序列
气候变化
粮食生产
climatic potential productivity
time sequences
annual fluctuation
climatic yields
