摘要
为了研究宁夏酿酒葡萄越冬期冻害风险的时空分布特征,以充分利用温度资源合理埋土,保障酿酒葡萄安全越冬、减少损失。本文根据宁夏酿酒葡萄种植区气象站1980-2018年各项温度观测资料,通过冻害资料验证,以-19℃极端最低气温为冻害指标临界值,采用数理统计方法,线性趋势拟合、Mann-Kendall突变检验法、Morlet小波分析法,分析了宁夏酿酒葡萄种植区冻害空间分布及年际变化特征。结果表明:宁夏酿酒葡萄主要种植区北部出现冻害风险最高,由北到南冻害风险逐渐减少;可种植区的北部、偏东、偏西的地区冻害风险较高;1980-2018年宁夏酿酒葡萄主要种植区越冬达到冻害日数呈减少趋势,2007年以后减少比较明显;冻害日数最多的年份为2007年冬季,实际调查冻害较严重的1992、1988、2002、2010、1984年,各种植区都出现了持续时间较长的冻害;1989、1990、2001、2006年主要酿酒葡萄种植区均未出现冻害日;冻害日数有3a和21a左右的周期性变化,且在1988、2002、2013年有趋势突变。
In order to research spatial-temporal distribution characteristic of freezing damage risk for wine grape during overwintering in Ningxia,reasonable buried soil makes full use of temperature resources to ensure wine grape safe overwintering and reduce losses.Based on the various temperature observations in meteorological station of wine grape growth area in Ningxia during 1980-2018,verify by freezing damage data,19℃extreme minimum temperature as the index critical value of freeze injury,researching of the spatial distribution and the interannual variation characteristic.Using mathematical statistical methods,linear trend fitting,Mann-kendall mutation test,Morlet wavelet analysis,the results showed that freezing damage risk is the highest in the north of main wine-growing areas in Ningxia,the freezing damage risk reduced gradually from north to south.The risk of freezing damage is higher in the north,east and west of the planting area;wintering days with freezing damage in Ningxia wine grape growing areas decreased.The number offreezing damage days during overwintering of Majorwine grape growth region in Ningxia decreased during 1980-2018.The decrease was obvious after 2007,the largest number offreezing damage was the winter of 2007,and 1992,1988,2002,2010 and 1984 were the years with serious freezing damage in the actual investigation,the freezing damage with long duration occurred in all planting areas.In 1989、1990、2001 and 2006,there were not freezing injury days in the main wine-growing areas,the number of freezing injury days had periodic changes of 3a and 21a,and there was a trend mutation in 1988,2002 and 2013.
作者
杨洋
张晓煜
张磊
郭晓雷
李阳
杨豫
YANG Yang;ZHANG Xiaoyu;ZHANG Lei;GUO Xiaolei;LI Yang;YANG Yu(Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,Yinchuan 750002,China;Ningxia Key Lab of Meteorological Disaster Prevention and Reduction,Yinchuan 750002,China;Yinchuan Meteorological Office,Yinchuan 750002,China;Ningxia University,Yinchuan 750002,China)
出处
《自然灾害学报》
CSCD
北大核心
2019年第6期214-222,共9页
Journal of Natural Disasters
基金
国家自然科学基金项目(41675114)
宁夏回族自治区重点研发计划(2018BFH03012)~~
关键词
冻害风险
空间分布
年际变化
周期变化
趋势突变
freezing damage risk
spatial-temporal distribution
interannual variation
periodic changes
trend mutation
