| 中国黄土高原气候生产力次区域反向演变特征 |
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| 引用本文： | 王毅荣,张存杰. 中国黄土高原气候生产力次区域反向演变特征[J]. 干旱地区农业研究, 2005, 23(4): 186-190 |
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| 作者姓名： | 王毅荣 张存杰 |
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| 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,甘肃,兰州,730020;甘肃省定西市气象局,甘肃,定西,743000
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,甘肃,兰州,730020 |
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| 基金项目： | 国家自然科学基金项目(40205015),(40375011)资助。 |
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| 摘 要： | 对黄土高原1961～2000年近40a气候生产力变化进行分析,结果表明:黄土高原气候生产力南北部有反向变化趋势,其演变过程在1984年明显转变,南部转向降低、北部升高;东西变化过程在1982年存在变点,有东部减少、西部增多的趋势;生产力在时间演变中以2～4a和8a左右的年际振荡为主,4a左右的振荡最突出。
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| 关 键 词： | 黄土高原 气候生产力 次区域 反向演变 |
| 文章编号： | 1000-7601(2005)04-0186-05 |
| 修稿时间： | 2004-11-17 |
The opposite evolvement of climate-productivity among sub-districts on Loess Plateau in China |
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| WANG Yi-rong,ZHANG Cun-jie. The opposite evolvement of climate-productivity among sub-districts on Loess Plateau in China[J]. Agricultural Research in the Arid Areas, 2005, 23(4): 186-190 |
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| Authors: | WANG Yi-rong ZHANG Cun-jie |
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| Affiliation: | WANG Yi-rong~ |
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| Abstract: | By investigating the distribution and change of climate-productivity on Loess Plateau during recent 40 years, it was shown that the climate-productivity evolved with opposite phase between north and south, as well as east and west. As for the change of north and south, the turning point was in 1984, the climate-productivity decreased remarkably in the south but rose in the north. As for the change of east and west, the turning point was in 1982, the climate-productivity tended to decrease in the east but increase in the west. By using wavelet analysis, the 2~4 years and 8 years variation period was identified on precipitation, and the 4 years period was most outstanding. |
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| Keywords: | Loess Plateau climate-productivity sub-district opposite evolvement |
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