新疆博乐垦区人工防雹效果的统计评估  

Evaluation of Hail Suppression Effect in Bole Area in Xinjiang

作　　者：李斌[1] 胡寻伦[1] 

机构地区：[1]新疆生产建设兵团气象局,乌鲁木齐830002

出　　处：《气象》2006年第12期56-60,共5页Meteorological Monthly

摘　　要：为了客观地评估博乐垦区多年开展人工防雹的作业效果,利用兵团博乐农五师垦区1976—2003年中,后15年开展防雹工作和前13年未开展防雹工作期间的年雹灾面积资料,运用简单序列检验法、不成对秩和检验法以及t-检验法等统计学的方法进行了人工防雹作业效果统计评估分析。结果为:人工防雹作业使平均年雹灾面积减少841．53hm2,雹灾面积相对减少率为26．56％,统计显著性水平达到α=0．05。因此,博乐垦区人工防雹作业效果显著。In order to objectively evaluate the hail suppression effect in Bole Area of Xinjiang, the statistical approaches such as simple sequential test, unpaired W-M-W test and ttest, are used with the data of the annual hail damaged areas during 1976--2003 in Bole area of Xinjiang, in which the hail suppression operations were carried out during 1989--2003, and were not carried out during 1976--1988. It is shown that the annual mean hail damaged areas have been reduced by 841.53hm^2, about 26.56＆. The statistical significance level α= 0. 05. Therefore the hail suppression effect in the area is significant.

关 键 词：人工防雹 效果 评估 

分 类 号：P482[天文地球—大气科学及气象学]