摘要
采用文献统计法,对陕西公元前244-公元2000年霜冷灾害的时空特征进行研究。结果表明:灾害明显增多,有千年、100-200年左右长周期,也有15年、2-5年的短周期存在;一般3-5月,8-10月春秋转换期最易发生。陕北长城沿线为多灾重灾区、黄土高原属次多灾中灾区,以秋季型灾害为主;关中平原为次多灾中灾区,以春夏型为主;陕南秦巴山地为少灾轻灾区,春秋多发型,尤以春季为主。全球气候变化、中国季风气候是形成时间特征的原因,南北狭长的地域范围,近东西向的三列山脉、局地微地形及农业布局等是形成空间特征的原因。
The spatial and temporal regulation of the frost and cold disaster in historical period in Shaanxi Province had been studied.The disasters increased significantly and there were 1 000 year and 100-200 year long cycle,and also about 15 year and 2-5 year short cycle.The disaster is serious in areas Along the Great Wall and Loess Plateau in Northern Shaanxi.The Guanzhong Plain is minor multi-serious disaster area.QinBa mountainous of southern Shaanxi Province is less-light disaster area.Global climate change,monsoon climate is responsible for the time features; and narrow territory,mountain range alignment,local micro-topography and agricultural layout are responsible for the spatial characteristics.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第5期829-832,共4页
Journal of Northwest University（Natural Science Edition）
基金
陕西省社会科学基金资助项目(2014D43)
汉中市科技局基金资助项目(2013HZZX-15)
陕西理工学院基金资助项目(SLGKY13-12)
关键词
霜冻
冷害
时空分布
陕西
Frost
cold disaster
spatial and temporal distribution
Shaanxi Province
