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黄土高原气候生产力演变特征
引用本文:王毅荣,王润元,邓振镛.黄土高原气候生产力演变特征[J].中国农业气象,2006,27(2):70-75.
作者姓名:王毅荣  王润元  邓振镛
作者单位:1. 中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室,兰州,730020;甘肃省定西市气象局
2. 中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室,兰州,730020
基金项目:科技部社会公益研究项目;甘肃省科技攻关项目;兰州区域气象中心实验室基金
摘    要:利用黄土高原地区40a的气象资料,采用EOF、REOF、EEOF、CEOF分解和小波分析等方法,研究了该区域气候生产力时空演变特征.结果表明:黄土高原气候生产力呈递减趋势;存在相关程度高的3个次区域(西部、东部和南部),次区域间气候生产力时间演变差异较大;小波分析表明气候生产力变化2~4a周期振荡比较明显;气候生产力变化空间系统的移动方向、强度等在4a内变化明显;高原中北部是气候生产力变化的敏感区;气候生产力的空间变化幅度南部明显大于北部,变化信息有从高原中东部向四周传播的趋势.

关 键 词:黄土高原  气候生产力  演变特征
收稿时间:2005-07-07
修稿时间:2005-07-07

Evolvement of Climate-productivity over Chinese Loess Plateau
WANG Yi-rong,WANG Run-yuan,DENG Zhen-yong.Evolvement of Climate-productivity over Chinese Loess Plateau[J].Chinese Journal of Agrometeorology,2006,27(2):70-75.
Authors:WANG Yi-rong  WANG Run-yuan  DENG Zhen-yong
Institution:1. Key Laboratory of Arid Climate Change and Disaster Reduction of Gansu Province, Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou 730020,China; 2, Meteorological Bureau of Dingxi City
Abstract:Based on the meteorological date from 1961 to 2000 in Chinese Loess Plateau,the spatial and temporal variations of climate-productivity in Chinese Loess Plateau were investigated,by applying Empirical Orthogonal Function(EOF),Rotated Empirical Orthogonal Function(REOF),Expand Empirical Orthogonal Function((EEOF),)Complex Empirical Orthogonal Function(CEOF)and wavelet analysis.The results showed that the climate-productivity kept decreased over Chinese Loess Plateau.The west,east and south part were identified as highly related regions,where strong temporal variability of the climate-productivity existed.By using wavelet analysis,the 2-4 years period was more remarkable.The changes of direction and intension of the climateproductivity were evident within 4 years.The climate-productivity variation amplitude was bigger in the south than that in the north of the plateau.The sensitivity of the climate-productivity variation was in the central north of the plateau.The variation information of the climate-productivity flowed from the central east area to edge of the plateau.
Keywords:Chinese Loess Plateau  Climate-productivity  Evolvement
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