摘要
根据庆阳市多年灾情数据,分析农业气象灾害的时空分布特征,采用受灾率及其标准化值,开展农业气象灾害分级及年景评估。结果表明,庆阳市主要农业气象灾害为冰雹、暴雨洪涝、干旱以及低温冻害,每年均受到不同程度的农业气象灾害影响;秋冬两季发生气象灾害次数较少,春、夏、秋初季次数相对较多,主要集中在4—9月,6—8月较为明显;干旱造成的农业灾害最为严重,其次为冰雹灾害,暴雨洪涝和低温冻害最轻;塬区农业气象灾害相对较少,受灾程度较轻,川道区天气现象复杂,受灾程度严重;冰雹灾害造成的农业致灾程度均在大灾及以下,暴雨洪涝、干旱以及低温冻害3种致灾程度极端性明显,年景评估中轻灾年出现频率最多。
Based on the disaster data of many years in Qingyang city,the temporal and spatial distribution characteristics of agro-me⁃teorological disasters were analyzed,and the disaster rate and its standardized value were used to carry out the classification and annu⁃al assessment of agro-meteorological disasters.The results showed that the main agro-meteorological disasters were hail,rainstorm,flood,drought and low-temperature freeze damage in Qingyang city,which were affected by agro-meteorological disasters in different degrees every year;The number of meteorological disasters was less in autumn and winter,and more in spring,summer and early au⁃tumn.The meteorological disasters were mainly concentrated in April to September,and more obvious in June to August;The agricul⁃tural disasters caused by drought were the most serious,followed by hail disaster,rainstorm flood and low-temperature freeze disaster were the least;The agricultural meteorological disaster in tableland area was relatively less,the degree of disaster was relatively light,and the weather phenomenon in mountains area was complex,and the degree of disaster was serious;The degree of agricultural disas⁃ter caused by hail disaster was all below the level of major disaster,and the extreme degree of rainstorm flood,drought and low-tem⁃perature freeze disaster was obvious,and the frequency of light disaster year was the most in the annual assessment.
作者
韩晶
张谋草
路亚奇
张洪芬
曹彦超
HAN Jing;ZHANG Mou-cao;LU Ya-qi;ZHANG Hong-fen;CAO Yan-chao(Qingyang Meteorological Bureau,Qingyang 745000,Gansu,China)
出处
《湖北农业科学》
2021年第2期44-49,55,共7页
Hubei Agricultural Sciences
基金
甘肃省气象局科技项目(Ms2019-12)
庆阳市气象局科技项目(QY2019-8)。
关键词
农业气象灾害
时空分布
受灾率
年景评估
agro-meteorological disaster
spatiotemporal distribution
disaster rate
annual assessment
作者简介
韩晶(1988-),女,甘肃宁县人,工程师,硕士,主要从事灾害性天气研究,(电话)0934-8212885(电子信箱)446843809@qq.com。
