23年来河南省主要气象灾害对农业的影响及时空分布特征

EFFECTS OF MAIN METEOROLOGICAL DISASTERS ON AGRICUITURAL PRODUCTION AND ITS SPATIAL-TEMPORAL DISTRIBUTION FOR THE PAST 23a IN HENAN PROVINCE

利用1988～2010年河南省主要气象灾害受灾面积、成灾面积、农作物播种面积以及粮食产量等基础数据，系统分析河南省境内主要的气象灾害（干旱、洪涝、风雹灾、霜冻）对农业的危害、时序特征、空间分布，并进一步分析了河南省农业气象灾害与粮食产量的关系。结果表明，水灾和旱灾是河南省最主要的两种气象灾害，对农业生产具有长久的威胁，旱灾多发生在豫西和豫北地区，而水灾多发生在豫东南地区。农业气象灾害跟粮食产量呈负相关关系，直接威胁粮食产量。

This thesis is a systematic analysis of main climate disasters＇effects （drought, flood, hail stone, and froze） on agriculture, time order, area distribution in Henan Province by data of utmost climate disasters＇effect on disastrous area, destructed area, grain feeding area and production. Then we use these data to analysis relationship between climate disasters and grain production in He＇nan province. It shows flood and drought are main two climate disasters which has long - potential effects on grain production in Henan Province, drought mainly founded in west and north of He＇nan province, well flood founded in southeast He＇nan province. Agricultural climate disasters has fade effects to do with grain production.